Naruhiko Ikoma, MD, MS

Peer-Reviewed Articles

1. Hirata Y, Mansfield P, Ikoma N. ASO Author Reflections: Robotic Transabdominal Approach for Gastroesophageal Junction Cancers in the Era of Multidisciplinary Treatment. Ann Surg Oncol 30(5):2957-2958, 2023. e-Pub 2023. PMID: 36695991.
2. Erstad DJ, Hatanaka Y, Cass S, Maxwell J, Tran Cao H, Kim M, Tzeng CW, Lee JE, Katz M, Ikoma N. Technique for Robotic Pancreaticojejunostomy. J Am Coll Surg 236(5):e12-e14, 2023. e-Pub 2022. PMID: 36729595.
3. Hirata Y, Maxwell JE, Kim MP, Tzeng CD, Katz MHG, Ikoma N. Transmesocolic Approach for Robotic Duodenal Operations. Ann Surg Oncol 30(5):2959, 2023. e-Pub 2023. PMID: 36752968.
4. Hirata Y, Alambeigi F, Ikoma N. ASO Author Reflections: Evolution of Surgical Techniques Through Robotic Surgery Technology. Ann Surg Oncol 30(5):2960-2961, 2023. e-Pub 2023. PMID: 36820937.
5. Hirata Y, Mansfield P, Badgwell BD, Ikoma N. Evidence-Based Surgical Approach to Gastroesophageal Junction Cancer: How We Do Robotic Transhiatal Lower Mediastinal Dissection and Esophagojejunostomy. Ann Surg Oncol 30(5):2956, 2023. e-Pub 2023. PMID: 36658247.
6. Cousins A, Krishnan S, Krishnan G, Pham N, Milanova V, Nelson M, Shetty A, Ikoma N, Thierry B. Preclinical evaluation of sentinel node localization in the stomach via mannose-labelled magnetic nanoparticles and indocyanine green. Surg Endosc. e-Pub 2023. PMID: 37165173.
7. Hirata Y, Azhdarinia A, Alambeigi F, Ikoma N. ASO Author Reflections: Management of R1 Margins in the Era of Multidisciplinary Treatment of Gastric Cancer. Ann Surg Oncol. e-Pub 2023. PMID: 37171562.
8. Tong YT, Lai Z, Katz MHG, Prakash LR, Wang H, Chatterjee D, Kim M, Tzeng CD, Lee JE, Ikoma N, Rashid A, Wolff RA, Zhao D, Koay EJ, Maitra A, Wang H. Prognosticators for Patients with Pancreatic Ductal Adenocarcinoma Who Received Neoadjuvant FOLFIRINOX or Gemcitabine/Nab-Paclitaxel Therapy and Pancreatectomy. Cancers (Basel) 15(9), 2023. e-Pub 2023. PMID: 37174073.
9. Hirata Y, Agnes A, Estrella JS, Blum M, Das P, Minsky BD, Ajani JA, Badgwell BD, Mansfield P, |Ikoma N. ASO Visual Abstract: Clinical Impact of Positive Surgical Margins in Gastric Adenocarcinoma in the Era of Preoperative Therapy. Ann Surg Oncol. e-Pub 2023. PMID: 37193894.
10. Sohn AJ, Taherian M, Katz MHG, Prakash LR, Chatterjee D, Wang H, Kim M, Tzeng CD, Lee JE, Ikoma N, Rashid A, Wolff RA, Zhao D, Koay EJ, Sun R, Maitra A, Wang H. Integrated Pathologic Score Effectively Stratifies Patients With Pancreatic Ductal Adenocarcinoma Who Received Neoadjuvant Therapy and Pancreaticoduodenectomy. Am J Surg Pathol 47(4):421-430, 2023. e-Pub 2023. PMID: 36746143.
11. Concors SJ, Katz MHG, Ikoma N. Minimally Invasive Pancreatectomy: Robotic and Laparoscopic Developments. Surg Oncol Clin N Am 32(2):327-342, 2023. PMID: 36925189.
12. Ngo-Huang AT, Parker NH, Xiao LC, Schadler KL, Petzel MQB, Prakash LR, Kim MP, Tzeng CD, Lee JE, Ikoma N, Wolff RA, Javle MM, Koay EJ, Pant SD, Folloder JP, Wang X, Cotto AM, Ju YR, Garg N, Wang H, Bruera ED, Basen-Engquist KM, Katz MHG. Effects of a Pragmatic Home-based Exercise Program Concurrent with Neoadjuvant Therapy on Physical Function of Patients with Pancreatic Cancer: The Pancfit Randomized Clinical Trial. Ann Surg. e-Pub 2023. PMID: 37026453.
13. Mitchell KG, Bayley EM, Ikoma N, Antonoff MB, Mehran RJ, Rajaram R, Rice DC, Roth JA, Sepesi B, Swisher SG, Vaporciyan AA, Walsh GL, Maru DM, Erasmus JJ, Weston BR, Ajani JA, Badgwell BD, Hofstetter WL. Gastric Extent of Tumor Predicts Peritoneal Metastasis in Siewert II Adenocarcinoma. Ann Thorac Surg. e-Pub 2023. PMID: 37080372.
14. Hirata Y, Agnes A, Estrella JS, Blum Murphy M, Das P, Minsky BD, Ajani JA, Badgwell BD, Mansfield P, Ikoma N. Clinical Impact of Positive Surgical Margins in Gastric Adenocarcinoma in the Era of Preoperative Therapy. Ann Surg Oncol. e-Pub 2023. PMID: 37106276.
15. Newhook TE, Vreeland TJ, Griffin JF, Tidwell RSS, Prakash LR, Koay EJ, Ludmir EB, Smaglo BG, Pant S, Overman M, Wolff RA, Ikoma N, Maxwell J, Kim MP, Lee JE, Katz MHG, Tzeng CD. Prognosis Associated With CA19-9 Response Dynamics and Normalization During Neoadjuvant Therapy in Resected Pancreatic Adenocarcinoma. Ann Surg 277(3):484-490, 2023. e-Pub 2022. PMID: 36649067.
16. Hirata Y, Agnes A, Arvide EM, Robinson KA, To C, Griffith HL, LaRose MD, Munder KM, Mansfield P, Badgwell BD, Ikoma N. Short-Term and Textbook Surgical Outcomes During the Implementation of a Robotic Gastrectomy Program. J Gastrointest Surg. e-Pub 2023. PMID: 36917404.
17. Kara OC, Venkatayogi N, Ikoma N, Alambeigi F. A Reliable and Sensitive Framework for Simultaneous Type and Stage Detection of Colorectal Cancer Polyps. Ann Biomed Eng. e-Pub 2023. PMID: 36754924.
18. Daigle N, Knapp T, Duan S, Jones DW, Azhdarinia A, Ghosh SC, AghaAmiri S, Ikoma N, Estrella J, Schnermann MJ, Merchant JL, Sawyer TW. Combined multiphoton microscopy and somatostatin receptor type 2 imaging of pancreatic neuroendocrine tumors. bioRxiv, 2023. e-Pub 2023. PMID: 36778307.
19. Ayabe RI, Prakash LR, Bruno ML, Newhook TE, Maxwell JE, Arvide EM, Dewhurst WL, Kim MP, Ikoma N, Snyder RA, Lee JE, Katz MHG, Tzeng CD. Differential Gains in Surgical Outcomes for High-Risk vs Low-Risk Pancreatoduodenectomy with Successive Refinements of Risk-Stratified Care Pathways. J Am Coll Surg. e-Pub 2023. PMID: 36786469.
20. Donovan EC, Prakash LR, Chiang YJ, Bruno ML, Maxwell JE, Ikoma N, Tzeng CD, Katz MHG, Lee JE, Kim MP. Incidence of Postoperative Complications Following Pancreatectomy for Pancreatic Cystic Lesions or Pancreatic Cancer. J Gastrointest Surg 27(2):319-327, 2023. e-Pub 2022. PMID: 36443557.
21. Harada K, Hwang H, Wang X, Abdelhakeem A, Iwatsuki M, Blum Murphy MA, Maru DM, Weston B, Lee JH, Rogers JE, Thomas I, Shanbhag N, Zhao M, Bhutani MS, Nguyen QN, Swisher SG, Ikoma N, Badgwell BD, Hofstetter WL, Ajani JA. Frequency and Implications of Paratracheal Lymph Node Metastases in Resectable Esophageal or Gastroesophageal Junction Adenocarcinoma. Ann Surg 273(4):751-757, 2021. PMID: 31188215.
22. Allen CJ, Newhook TE, Vreeland TJ, Das P, Minsky BD, Blum M, Song S, Ajani J, Ikoma N, Mansfield PF, Roy-Chowdhuri S, Badgwell BD. Yield of peritoneal cytology in staging patients with gastric and gastroesophageal cancer. J Surg Oncol 120(8):1350-1357, 2019. PMID: 31612494.
23. Ikoma N, Badgwell BD. ASO Author Reflections: Nodal Downstaging in Gastric Cancer. Ann Surg Oncol 25(Suppl 3):751-752, 2018. PMID: 30353393.
24. Vicente D, Ikoma N, Badgwell BD. ASO Author Reflections: Survival Impacts of Therapy and Complications in Gastric Adenocarcinoma. Ann Surg Oncol 25(Suppl 3):753-754, 2018. PMID: 30374929.
25. Ikoma N, Estrella JS, Hofstetter WL, Ajani JA, Fournier KF, Mansfield PF, Skibber JM, Badgwell BD. Surgeon Assessment of Gastric Cancer Lymph Node Specimens with a Video of Technique. J Gastrointest Surg 22(11):2013-2019, 2018. PMID: 30054780.
26. Ikoma N, Das P, Hofstetter W, Ajani JA, Estrella JS, Chen HC, Wang X, Callender RA, Zhu C, Roland CL, Fournier KF, Cormier JN, Mansfield P, Badgwell BD. Preoperative chemoradiation therapy induces primary-tumor complete response more frequently than chemotherapy alone in gastric cancer: analyses of the National Cancer Database 2006-2014 using propensity score matching. Gastric Cancer 21(6):1004-1013, 2018. PMID: 29730720.
27. Vicente D, Ikoma N, Chiang YJ, Fournier K, Tzeng CD, Song S, Mansfield P, Ajani J, Badgwell BD. Preoperative Therapy for Gastric Adenocarcinoma is Protective for Poor Oncologic Outcomes in Patients with Complications After Gastrectomy. Ann Surg Oncol 25(9):2720-2730, 2018. PMID: 29987602.
28. Ikoma N, Roland CL, Torres KE, Chiang YJ, Wang WL, Somaiah N, Mann GN, Hunt KK, Cormier JN, Feig BW. Salvage Surgery for Recurrent Retroperitoneal Well-Differentiated Liposarcoma: Early Reoperation may not Provide Benefit. Ann Surg Oncol 25(8):2193-2200, 2018. PMID: 29520652.
29. Ikoma N, Estrella JS, Blum M, Das P, Chen HC, Wang X, Fournier K, Mansfield P, Ajani J, Badgwell BD. Central Lymph Node Metastasis in Gastric Cancer Is Predictive of Survival After Preoperative Therapy. J Gastrointest Surg 22(8):1325-1333, 2018. PMID: 29679346.
30. Thiels CA, Ikoma N, Fournier K, Das P, Blum M, Estrella JS, Minsky BD, Ajani J, Mansfield P, Badgwell BD. Repeat staging laparoscopy for gastric cancer after preoperative therapy. J Surg Oncol 118(1):61-67, 2018. PMID: 29878364.
31. Ikoma N, Estrella JS, Hofstetter W, Das P, Minsky BD, Ajani JA, Fournier KF, Mansfield P, Badgwell BD. Nodal Downstaging in Gastric Cancer Patients: Promising Survival if ypN0 is Achieved. Ann Surg Oncol 25(7):2012-2017, 2018. PMID: 29748883.
32. Ikoma N, Hofstetter WL, Estrella JS, Das P, Minsky BD, Fournier KF, Mansfield PF, Ajani JA, Badgwell BD. The ypT category does not impact overall survival in node negative gastric cancer. J Surg Oncol 117(8):1721-1728, 2018. PMID: 29949666.
33. Keung EZ, Ikoma N, Benjamin R, Wang WL, Lazar AJ, Feig BW. The clinical behavior of well differentiated liposarcoma can be extremely variable: A retrospective cohort study at a major sarcoma center. J Surg Oncol 117(8):1799-1805, 2018. PMID: 29723411.
34. Ikoma N, Roland CL, Torres KE, Chiang YJ, Wang WL, Somaiah N, Mann GN, Hunt KK, Cormier JN, Feig BW. Concomitant organ resection does not improve outcomes in primary retroperitoneal well-differentiated liposarcoma: A retrospective cohort study at a major sarcoma center. J Surg Oncol 117(6):1188-1194, 2018. PMID: 29228466.
35. Balch CM, McMasters KM, Klimberg VS, Pawlik TM, Posner MC, Roh M, Tanabe KK, Whippen D, Ikoma N. Steps to Getting Your Manuscript Published in a High-Quality Medical Journal. Ann Surg Oncol 25(4):850-855, 2018. PMID: 29349528.
36. Ikoma N, Roland CL, Cormier JN, Chiang YJ, Torres KE, Hunt KK, You YN, Feig BW. Nongastrointestinal Stromal Tumor Spindle Cell Sarcomas of the Colon or Rectum. Am Surg 84(4):570-575, 2018. PMID: 29712608.
37. Ikoma N, Cloyd J, Badgwell BD, Agnes A, Rodriguez-Bigas M, Ajani JA, You YN. Clinical features and survival of gastric cancer patients with DNA mismatch repair deficiency. J Surg Oncol 117(4):707-709, 2018. PMID: 29228462.
38. Cloyd JM, Chun YS, Ikoma N, Vauthey JN, Aloia TA, Cuddy A, Rodriguez-Bigas MA, Nancy You Y. Clinical and Genetic Implications of DNA Mismatch Repair Deficiency in Biliary Tract Cancers Associated with Lynch Syndrome. J Gastrointest Cancer 49(1):93-96, 2018. PMID: 29238914.
39. Ikoma N, Cormier JN, Feig B, Du XL, Yamal JM, Hofstetter W, Das P, Ajani JA, Roland CL, Fournier K, Royal R, Mansfield P, Badgwell BD. Racial disparities in preoperative chemotherapy use in gastric cancer patients in the United States: Analysis of the National Cancer Data Base, 2006-2014. Cancer 124(5):998-1007, 2018. PMID: 29393964.
40. Ikoma N, Blum M, Estrella JS, Das P, Hofstetter WL, Fournier KF, Mansfield P, Ajani JA, Badgwell BD. Evaluation of the American Joint Committee on Cancer 8th edition staging system for gastric cancer patients after preoperative therapy. Gastric Cancer 21(1):74-83, 2018. PMID: 28643144.
41. Ikoma N, Lee JH, Bhutani MS, Ross WA, Weston B, Chiang YJ, Blum MA, Sagebiel T, Devine CE, Matamoros A, Fournier K, Mansfield P, Ajani JA, Badgwell BD. Preoperative accuracy of gastric cancer staging in patient selection for preoperative therapy: race may affect accuracy of endoscopic ultrasonography. J Gastrointest Oncol 8(6):1009-1017, 2017. PMID: 29299361.
42. Ikoma N, Araujo DM, Roland CL. The Hereditary Paraganglioma-Pheochromocytoma Syndrome: No Time to Waste-Reply. JAMA Oncol 3(12):1740, 2017. PMID: 28837712.
43. Ikoma N, Das P, Blum M, Estrella JS, Devine CE, Wang X, Fournier K, Mansfield P, Minsky BD, Ajani J, Badgwell BD. Preoperative Chemoradiation Therapy Does Not Increase Risk of Anastomotic Leak in Patients With Gastric Cancer. Int J Radiat Oncol Biol Phys 99(3):660-666, 2017. PMID: 29280460.
44. Ikoma N, Blum M, Estrella JS, Wang X, Fournier KF, Mansfield PF, Ajani JA, Badgwell BD. Left Gastric Artery Lymph Nodes Should Be Included in D1 Lymph Node Dissection in Gastric Cancer. J Gastrointest Surg 21(10):1563-1570, 2017. PMID: 28819789.
45. Ikoma N, Chen HC, Wang X, Blum M, Estrella JS, Fournier K, Mansfield P, Ajani J, Badgwell BD. Patterns of Initial Recurrence in Gastric Adenocarcinoma in the Era of Preoperative Therapy. Ann Surg Oncol 24(9):2679-2687, 2017. PMID: 28332034.
46. Ikoma N, Torres KE, Lin HY, Ravi V, Roland CL, Mann GN, Hunt KK, Cormier JN, Feig BW. Recurrence patterns of retroperitoneal leiomyosarcoma and impact of salvage surgery. J Surg Oncol 116(3):313-319, 2017. PMID: 28557016.
47. Ikoma N, You YN, Bednarski BK, Rodriguez-Bigas MA, Eng C, Das P, Kopetz S, Messick C, Skibber JM, Chang GJ. Impact of Recurrence and Salvage Surgery on Survival After Multidisciplinary Treatment of Rectal Cancer. J Clin Oncol 35(23):2631-2638, 2017. PMID: 28657814.
48. Ikoma N, Blum M, Chiang YJ, Estrella JS, Roy-Chowdhuri S, Fournier K, Mansfield P, Ajani J, Badgwell BD. Race Is a Risk for Lymph Node Metastasis in Patients With Gastric Cancer. Ann Surg Oncol 24(4):960-965, 2017. PMID: 27778127.
49. Ikoma N, Blum M, Chiang YJ, Estrella JS, Roy-Chowdhuri S, Fournier K, Mansfield P, Ajani JA, Badgwell BD. Yield of Staging Laparoscopy and Lavage Cytology for Radiologically Occult Peritoneal Carcinomatosis of Gastric Cancer. Ann Surg Oncol 23(13):4332-4337, 2016. PMID: 27384751.
50. Ikoma N, Blum M, Chiang YJ, Estrella JS, Roy-Chowdhuri S, Fournier K, Mansfield P, Ajani JA, Badgwell BD. Survival rates in T1 and T2 gastric cancer: A Western report. J Surg Oncol 114(5):602-606, 2016. PMID: 27439746.
51. Ikoma N, Harvin JA. Technical Report: Laparoscopic repair of traumatic ventral hernia. Clinics in Surgery 1:1123, 2016.
52. Itano O, Oshima G, Minagawa T, Shinoda M, Kitago M, Abe Y, Hibi T, Yagi H, Ikoma N, Aiko S, Kawaida M, Masugi Y, Kameyama K, Sakamoto M, Kitagawa Y. Novel strategy for laparoscopic treatment of pT2 gallbladder carcinoma. Surg Endosc 29(12):3600-7, 2015. PMID: 25740638.
53. Itano O, Oshima G, Kitago M, Suzuki K, Hayatsu S, Shinoda M, Abe Y, Hibi T, Yagi H, Ikoma N, Aiko S, Kitagawa Y. Harness Traction Technique (HARNESS): Novel Method for Controlling the Transection Plane During Laparoscopic Hepatectomy. Surg Laparosc Endosc Percutan Tech 25(4):e117-21, 2015. PMID: 26121541.
54. Ikoma N, Torres KE, Somaiah N, Hunt KK, Cormier JN, Tseng W, Lev D, Pollock R, Wang WL, Feig B. Accuracy of preoperative percutaneous biopsy for the diagnosis of retroperitoneal liposarcoma subtypes. Ann Surg Oncol 22(4):1068-72, 2015. PMID: 25354575.
55. Itano O, Ikoma N, Takei H, Oshima G, Kitagawa Y. The superficial precoagulation, sealing, and transection method: a "bloodless" and "ecofriendly" laparoscopic liver transection technique. Surg Laparosc Endosc Percutan Tech 25(1):e33-6, 2015. PMID: 24752166.
56. Ikoma N, Itano O, Oshima G, Kitagawa Y. Laparoscopic liver mobilization: tricks of the trade to avoid complications. Surg Laparosc Endosc Percutan Tech 25(1):e21-3, 2015. PMID: 25370795.
57. Ikoma N, Itano O, Oshima G, Chiba N, Maeda S, Koyama Y, Aiko S, Kitagawa Y. Age-specific determinants of the safety of laparoscopic colectomy in elderly patients with colorectal cancer. Am Surg 80(4):E105-7, 2014. PMID: 24887652.
58. Ikoma N, Itano O, Oshima G, Shah SK, Fukuhara S, Kitagawa Y. Laparoscopic hepatectomy is easier in repeat hepatectomy. CRSLS:202, 2014.

Invited Articles

1. Ikoma N, Raghav K, Chang G. An Update on Randomized Clinical Trials in Metastatic Colorectal Carcinoma. Surg Oncol Clin N Am 26(4):667-687, 2017. PMID: 28923224.
2. Ikoma N, Badgwell BD, Mansfield PF. Multimodality Treatment of Gastric Lymphoma. Surg Clin North Am 97(2):405-420, 2017. PMID: 28325194.
3. Ikoma N, Rodriguez-Bigas M. Managing the primary tumor with unresectable synchronous colorectal metastases. Current Colorectal Cancer Reports 12:170-79, 2016.

Other Articles

1. Santamaria J, Buryanek J, Ikoma N Large Epigastric Cystic Lesion in a Pregnant Woman. JAMA Oncol 3(4):557-558, 2017. PMID: 28114457.
2. Ikoma N, Santamaria J, Wray CJ, Al-Ibraheemi A. Tsao K Ganglioneuroma of the pancreas in a 4-year-old girl. BMJ Case Rep doi: 10.1136/bcr-2016-217425, 2016. PMID: 27873762.
3. Ikoma N, Vaporciyan A Sternal metastasis of renal cell carcinoma: the role of metastasectomy. Journal of Thoracic and Cardiovascular Surgery 148(5):e230-1, 2014. PMID: 25152477.
4. Ikoma N, Fischer UM, Covinsky M, Quesada AE, Gomez R, McCray C, Warner NB, Ko TC Ileal perforation in a young female with Churg-Strauss Syndrome. The American Surgeon 80(1):94-6, 2014.
5. Ikoma N, Anderson C, Ohanian M, Jenuja H, MacFadyen B, Shah SK, Bajwa K Portal vein thrombosis after laparoscopic cholecystectomy: Case presentation and review of a rare complication. The Annals of Thoracic Surgery 18(1):125-7, 2014.
6. Fukuhara S, Montgomery M, Ikoma N, Miyata R Pylorus-preserving pancreaticoduodenectomy following coronary artery bypass grafting using right gastroepiploic artery. The Annals of Thoraci Surgery 97(4):1447-9, 2014.
7. Ikoma N, Karahashi T, Wray C, Takei H, Hosoda Y Ultrasound-guided intraoperative transduodenal pancreatic head biopsy – A safe and effective procedure to exclude malignancy in obstructive jaundice patients. The American Surgeon 79(12):357-9, 2013.
8. Ikoma N, Itano O, Fuchimoto Y, Du W, Kitagawa Y Colonic Perforation in a Case of Adult Hirschsprung's Disease with Acetylcholinesterase-Negative Neuronal Fibers. The American Surgeon 79(3):130-2, 2013.
9. Ikoma N, Shinozaki H, Kozuki A, Ibuki S, Sugano K, Mukai M, Masuda Y, Kobayashi K, Ogata Y A case report of hepatocellular carcinoma in a noncirrhotic patient with liver iron overload associated with myelodysplastic syndrome. World Journal of Oncology 4(6):248-251, 2013.
10. Kozuki A, Shinozaki H, Ikoma N, Kobayashi K, Ogata Y, Mukai M A rare case of superior mesenteric artery aneurysm caused by segmental arterial mediolysis with concomitant left renal angiomyolipoma and pulmonary lymphangioleiomyomatosis. Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 70(6):1701-6, 2009.

Editorials

1. Ikoma N, Katz MHG. Improving Outcomes After Distal Pancreatectomy with Celiac Axis Resection (DP-CAR): As Always, it is All About Patient Selection. Ann Surg Oncol 26(3):703-704, 2019. PMID: 30539493.

Abstracts

1. Hirata Y, Mansfield P, Badgwell BD, Ikoma N. Evidence-Based Surgical Approach to Gastroesophageal Junction Cancer: How We Do Robotic Transhiatal Lower Mediastinal Dissection and Esophagojejunostomy. Ann Surg Oncol. e-Pub 2023. PMID: 36658247.
2. Kaseb AO, Pestana RC, Vence LM, Blando JM, Singh S, Ikoma N, Vauthey J-N, Allison JP, Sharma P. Early postoperative drain fluid amylase in risk stratified patients: Implications for tailored post pancreatectomy drain management. 2019 Annual Meeting of the American Hepato-Pancreato-Biliary Association, Miami Beach, FL, 2019.
3. Ikoma N, Hofstetter W, Ajani JA, Estrella J, Das P, Fournier K, Mansfield P, Badgwell BD. The ypT Category Does Not Impact Overall Survival in Node Negative Gastric Cancer. The 91st Annual Meeting of The Japanese Gastric Cancer Association, 2019.
4. Kaseb AO, Pestana RC, Vence LM, Blando JM, Singh S, Ikoma N, Vauthey J-N, Allison JP, Sharma P. Randomized, open-label, perioperative phase II study evaluating nivolumab alone versus nivolumab plus ipilimumab in patients with resectable HCC. ASCO-SITC Clinical Immuno-Oncology Symposium, San Francisco, CA, 2019.
5. Kaseb AO, Pestana RC, Vence LM, Blando JM, Singh S, Ikoma N, Vauthey JN, Allison JP, Sharma P. Randomized, open-label, perioperative phase II stufy evaluating nivolumab alone versus nivolumab plus ipilimumab in patients with resectable HCC. Oral Presentation, ASCO-SITC Clinical Immuno-Oncology Symposium, San Francisco, CA, 2019.
6. Kaseb AO, Pestana RC, Vence LM, Blando JM, Singh S, Ikoma N, Vauthey J-N, Allison JP, Sharma P. Randomized, open-label, perioperative phase II study evaluating nivolumab alone versus nivolumab plus ipilimumab in patients with resectable HCC. Gastrointestinal Cancers Symposium (ASCO-GI), San Francisco, CA, 2019.
7. Mitchell KG, Ikoma N, Nelson DB, Maru DM, Erasmus JJ, Vaporciyan AA, Antonoff MB, Mehran RJ, Rice DC, Roth JA, Swisher SG, Sepesi B, Walsh GL, Correa AM, Badgwell BD, Hofstetter WL. Predictors of mediastinal involvement after neoadjuvant chemoradiation in adenocarcinoma of the gastroesophageal junction. Southern Thoracic Surgical Association 65th Annual Meeting, 2018.
8. Ikoma N, Agnes A, Chen HC, Wang X, Blum MM, Das P, Minsky B, Estrella JS, Mansfield P, Ajani JA, Badgwell BD. Linitis Plastica: A Distinct Type of Gastric Cancer That Needs a Clear Definition. Poster presentation, Western Surgical Association 2019 Annual Meeting, Los Cabos, Mexico, 2018.
9. Ikoma N, Das P, Ajani JA, Estrella JS, Chen HC, Wang X, Roland CL, Fournier KF, Cormier JN, Mansfield P, Badgwell BD. Preoperative Chemoradiation Therapy Induces Primary-tumor Complete Response More Frequently Than Chemotherapy Alone in Gastric Cancer. Oral poster presentation. The 118th Annual Congress of Japan Surgical Society, Tokyo, Japan, 2018.
10. Ikoma N, Estrella JS, Hofstetter W, Ajani JA, Fournier K, Mansfield P, Skibber JM, Badgwell BD. Surgeon Assessment of Gastric Cancer Lymph Node Specimens. Oral presentation, Society of Surgical Oncology 71st Annual Cancer Symposium, Chicago, IL, 2018.
11. Ikoma N, Estrella JS, Hofstetter W, Das P, Ajani JA, Fournier K, Mansfield P, Badgwell BD. Nodal Downstaging in Gastric Cancer: Promising Survival if ypN0 Is Achieved. Oral presentation (Plenary session), Awarded Best Clinical Research Paper. Society of Surg Oncology 71th Annual Cancer Symposium, Chicago, IL, 2018.
12. Vicente D, Ikoma N, Chiang YJ, Fournier K, Mansfield P, Ajani AJ, Badgwell BD. Preoperative Therapy for Gastric Adenocarcinoma is Protective for Poor Oncologic Outcomes in Patients with Complications after Gastrectomy. Accepted for oral presentation. Society of Surgical Oncology 71th Annual Cancer Symposium, Chicago, IL, 2018.
13. Ikoma N, Cormier, JN, Feig B, Du XL, Yamal JM, Hofstetter W, Das P, Ajani JA, Roland C, Fournier K, Royal R, Mansfield P, Badgwell BD. Racial Disparities in Preoperative Chemotherapy Use in Gastric Cancer Patients in the United States. Oral presentation. The 13th Annual Academic Surgical Congress, Jacksonville, Florida, 2018.
14. Ikoma N, Estrella JS, Hofstetter W, Das P, Ajani JA, Fournier KF, Mansfield P, Badgwell BD. Nodal downstaging in gastric cancer in relation to survival when ypN0 is achieved. Poster presentation. Gastrointestinal Cancers Symposium, San Francisco, California, 2018.
15. Vicente D, Ikoma N, Chiang YJ, Fournier K, Mansfield P, Ajani AJ, Badgwell BD. Preoperative Therapy for Gastric Adenocarcinoma is Protective for Poor Oncologic Outcomes in Patients with Complications after Gastrectomy. Poster presentation. Gastrointestinal Cancers Symposium, San Francisco, California, 2017.
16. Ikoma N, Das P, Ajani JA, Estrella JS, Chen HC, Wang X, Roland CL, Fournier KF, Cormier JN, Mansfield P, Badgwell BD. Preoperative Chemoradiation Therapy Induces Primary-tumor Complete Response More Frequently Than Chemotherapy Alone in Gastric Cancer. Oral presentation. Western Surgical Association 2017 Annual Meeting, 2017.
17. Keung E, Ikoma N, Benjamin R, Wang WL, Lazar A, Feig BW. Fifty Shades of Yellow: Not All Well Differentiated Liposarcoma Are Created Equal – The Clinical Behavior of WDLPS Can Be Extremely Variable. Poster presentation. The 22nd Annual Meeting of the Connective Tissue Oncology Society, Maui, Hawaii, 2017.
18. Ikoma N, Blum M, Estrella JS, Fournier K, Mansfield P, Ajani J, Badgwell B. Preoperative Chemoradiation Therapy Does Not Increase Risk of Anastomotic Leak in Gastric Cancer Patients. Oral Presentation. Digestive Disease Week, Chicago, IL, 2017.
19. Ikoma N, Blum M, Estrella JS, Fournier K, Mansfield P, Ajani J, Badgwell B. Left Gastric Artery Lymph Nodes Should Be Included in D1 Lymph Node Dissection in Gastric Cancer. Poster Presentation. Digestive Disease Week, Chicago, IL, 2017.
20. Ikoma N, Chen SC, Wang X, Blum M, Estrella JS, Fournier K, Mansfield P, Ajani J, Badgwell B. Effect of Preoperative Therapy on Recurrence Sites and Survival of Gastric Cancer. Oral Presentation. Awarded Traveler’s Grant/Young Investigator Award. The 117th Annual Congress of Japan Surgical Society, Yokohama, Japan, 2017.
21. Ikoma N, Roland CL, Chiang YJ, Torres KE, Cormier JN, Somaiah N, Hunt KK, Feig BW. Timing and Extent of Surgical Resection for Recurrent Retroperitoneal Well-Differentiated Liposarcoma. Poster presentation. Society of Surgical Oncology 70th Annual cancer Symposium, Seattle, Washington, 2017.
22. Ikoma N, Estrella JS, Blum M, Chen SC, Wang X, Fournier K, Mansfield P, Ajani J, Badgwell B. Impact of Central Lymph Node Examination in Gastric Cancer. Poster Presentation. Society of Surgical Oncology 70th Annual cancer Symposium, Seattle, Washington, 2017.
23. Ikoma N, Chen SC, Wang X, Blum M, Estrella JS, Fournier K, Mansfield P, Ajani J, Badgwell B. Recurrence Patterns of Gastric Cancer In the Era of Preoperative Therapy. Poster Presentation. Gastrointestinal Cancers Symposium, San Francisco, California, 2017.
24. Ikoma, N, Estrella JS, Blum M, Chen SC, Wang X, Fournier K, Mansfield P, Ajani J, Badgwell B.. Lymph Node Metastasis in Gastric Cancer – Location of Positive Station Predicts Survival After Preoperative Therapy. Poster Presentation. Gastrointestinal Cancers Symposium, San Francisco, California, 2017.
25. Ikoma N, Roland CL, Chiang YJ, Torres KE, Hunt KK, Mann GN, Cormier JN, Feig BW. Does Extended Surgical Resection Improve Outcomes in Primary Retroperitoneal Well-differentiated Liposarcoma?. Poster presentation. The 21st Annual Meeting of the Connective Tissue Oncology Society, Lisbon, Portugal, 2016.
26. Ikoma N, Blum M, Ajani J, Chiang Y, Fournier K, Mansfield P, Badgwell B. Lymph Node Metastasis Frequency and Survival in pT1T2 Gastric Cancer: A Western Report. Oral presentation. Awarded Traveler's Grant/Young Investigator Award. The 116th Annual Congress of Japan Surgical Society, Osaka, Japan, 2016.
27. Ikoma N, Elimova E, Blum M, Ajani J, Chiang Y, Fournier K, Mansfield P, Badgwell B. Yield of Staging Laparoscopy in Gastric Cancer. Selected as one of the five finalists for the Poster Contest in Best Clinical Research Poster category. Society of Surgical Oncology 69th Annual cancer Symposium, Boston, Massachusetts, 2016.
28. Ikoma N, Elimova E, Blum M, Ajani J, Chiang Y, Fournier K, Mansfield P, Badgwell B. Race is a Risk for Lymph Node Metastasis in Early T Stage Gastric Cancer. Poster presentation. Society of Surgical Oncology 69th Annual cancer Symposium, Boston, Massachusetts, 2016.
29. Ikoma N, Watson K, Roland C, Hunt K, Cormier J, Mann G, Ravi V, Torres K, Feig B. Recurrence Patterns and Impact of Salvage Recurrence Patterns and Impact of Salvage Surgery for Leiomyosarcoma in the RetroperitoneumSurgery for Leiomyosarcoma in the Retroperitoneum. Poster presentation. Society of Surgical Oncology 69th Annual cancer Symposium, Boston, Massachusetts, 2016.
30. Ikoma N, Elimova E, Blum M, Ajani J, Chiang Y, Fournier K, Mansfield P, Badgwell B. Staging Laparoscopy with Cytology Analysis in gastric Cancer. Poster Presentation. Gastrointestinal Cancers Symposium, San Francisco, California, 2016.
31. Ikoma N, Elimova E, Blum M, Ajani J, Chiang Y, Fournier K, Mansfield P, Badgwell B. Survival in T1T2 Gastric Cancer. Poster Presentation. Gastrointestinal Cancers Symposium, San Francisco, California, 2016.
32. Ikoma N, Landers S, Watson K, Al Sannaa G, Ingram D, Wang W, Lazar A, Somaiah N, Roland C, Cormier J, Hunt K, Feig B, Torres K.. Clinicopathologic Comparison of Retroperitoneal Undifferentiated Pleomorphic Sarcoma and Dedifferentiated Liposarcoma. Poster Presentation: Selected for Poster Grand Rounds. Society of Surgical Oncology 68th Annual Cancer Symposium, Houston, Texas, 2015.
33. Orr WS, Watson K, Feig R, Ikoma N, De Rosa N, Giacco G, Ravi V, Benjamin R, Madewell JE, Cormier JN, Hunt KK, Roland CL, Feig BW, Torres KE. Is F-18 Fluoro-2-deoxy-D-glucose Positron Emission Tomography (FDG-PET/CT) of Value in Soft Tissue Sarcoma Management?. Poster Presentation. Society of Surgical Oncology 68th Annual Cancer Symposium, Houston, Texas. March 2015, 2015.
34. Ikoma N. What Young Surgeons Learn From Surgical Residency in The United States. The 76th Annual Congress of Japanese Surgical Association, 2014.
35. Ikoma N, Torres K, Somaiah N, Hunt K, Cormier J, Tseng W, Lev D, Pollock R, Feig B. Accuracy of Percutaneous Biopsy for Retroperitoneal Liposarcoma. Poster Presentation. Selected for Oral Presentation at Poster Grand Rounds. Society of Surgical Oncology 67th Annual Cancer Symposium, Phoenix, Arizona, 2014.
36. Ikoma N, Torres K, Cormier J, Hunt K, Yu N, Feig B. Spindle Cell Tumors of the Colon and Rectum. Poster Presentation. Society of Surgical Oncology 67th Annual Cancer Symposium, Phoenix, Arizona, 2014.
37. Fukuhara S, Montgomery M, Ikoma N, Miyata R. Modified Surgical Technique for Pancreaticoduodenectomy following Coronary Artery Bypass Grafting using an in situ Right Gastroepiploic Artery. Oral Presentation. Society of Surgical Oncology 67th Annual Cancer Symposium, Phoenix, Arizona, 2014.
38. Ikoma N. Laparoscopic liver mobilization - tricks of the trade to avoid complications. 2014 annual meeting of Americas Hepato-Pancreato-Biliary Association, Miami, Florida, 2014.
39. Ikoma N. Ultrasound guided intraoperative transduodenal pancreatic head biopsy - technical note. 2014 Annual meeting of Americas Hepato-Pancreato-Biliary Association, Miami, Florida, 2014.
40. Ikoma N, Itano O, Fukuhara S, Kitagawa Y. Safety and Efficacy of Laparoscopic Colectomy on Elderly Colon Cancer Patients: Age Specific Outcomes of Laparoscopic Colectomy. Poster Presentation. The 11th Annual Meeting of the International Society of Gastrointestinal Oncology, Washington DC, 2013.
41. Ikoma N, Itano O, Oshima G, Fukuhara S, Kitagawa Y. Superficial Pre-coagulation, Sealing and Transection (SPST) Method: A Bloodless and Eco-friendly Laparoscopic Liver Transection Technique. Poster Presentation. Society of American Gastrointestinal and Endoscopic Surgeons 2013 Annual Meeting, Baltimore, Maryland, 2013.
42. Ikoma N, Karahashi T, Shimizu K, Inoue Y, Uchida H, Yoshimizu N, Seki M, Sakurai T, Nakajima K, Hashimoto M, Hosoda Y.. A case of gallbladder SCC with invasion to liver, pancreas, and right colon, who underwent hapato-pancreato-duodenectomy and right colectomy. Oral presentation. 2011 Annual Meeting of Tokyo Surgical Society, Tokyo, Japan, 2011.
43. Ikoma N, Yoshimizu N, Inoue Y, Uchida H, Seki M, Karahashi T, Sakuai T, Nakajima K, Hashimoto M, Hosoda Y. A case with concurrent esophageal and gastric cancer; complete response after 2 cycles of DCS therapy. Poster presentation. The 48th Annual Meeting of the Japan Society of Clinical Oncology, Kyoto, Japan, 2010.
44. Ikoma N, Karahashi T, Inoue Y, Uchida H, Yoshimizu N, Seki M, Sakurai T, Nakajima K, Hashimoto M, Hosoda Y, Shimizu K, Hosoda Y. Oral presentation. 2010 Annual Meeting of Saitama Surgical Society, Saitama, Japan. A case of tumor-forming pancreatitis for whom intraoperative pancreatic biopsy was useful, 2010.
45. Ikoma N, Itano O, Maeda S, Ishikawa H, Koyama Y, Kitagawa Y. Effectiveness of laparoscopic colectomy for the elderly - Age specific postoperative morbidity and mortality of 32 cases. Oral Presentation. The 112th Annual Congress of Japan Surgical Society, Aichi, 2010.
46. Ikoma N, Itano O, Maeda S, Ishikawa H, Koyama Y, Kitagawa Y. Three remote laparoscopic hepatectomies for recurrent HCC. Oral presentation. The 21st Annual Meeting of the Japan Society of Endoscopic Surgery, Tokyo, Japan, 2009.
47. Ikoma N, Ishikawa H, Maeda S, Itano O, Koyama Y. A case report; Colonic perforation in a case of Adult Hirschsprung’s disease with AChE negative neuronal fibers. Oral presentation. Annual Congress of Japan Surgical Association, Kyoto, Japan, 2009.
48. Ikoma N, Ishikawa H, Maeda S, Itano O, Koyama Y. A case report; Perforated Intersusception of ileocecal cancer. Oral Presentation. 2009 Annual Meeting of Tokyo Surgical Society, Tokyo, Japan, 2009.
49. Ikoma N, Shinozaki H, Kozuki A, Ibuki S, Sugano K, Mukai M, Masuda Y, Kobayashi K, Ogata Y. A case report; HCC arising in non-cirrhotic liver of hemochromatosis patient. Oral Presentation. The 108th Annual Congress of Japan Surgical Society, Nagasaki, Japan, 2008.

Book Chapters

1. Ikoma N, Munder, K, B Badgwell. Postgastrectomy Syndrome. In: In: Shackelford’s Surgery of the Alimentary Tract. 9th Edition, 2023.
2. Ikoma N, Roland CL, Feig BW. Soft Tissue and Bone Sarcoma. In: The MD Anderson Surgical Oncology Handbook. Sixth. Wolters Kluwer: Philadelphia, 143-171, 2018.
3. Egger ME, Ikoma N, Badgwell BD. Primary Gastric Malignancies. In: The MD Anderson Surgical Oncology Handbook. Sixth. Wolters Kluwer: Philadelphia, 235-268, 2018.