Masashi Momiyama

Recent Treatment Options for Primary Colonic Leiomyosarcoma: A Case Report and a Review of the Literature

Akira Dejima, Masashi Momiyama, Kentaro Nakajima, Mao Tsuru et autres

INTRODUCTION: Primary colonic leiomyosarcoma (LMS) accounts for only 0.12% of colonic malignancies. However, it is highly aggressive and associated with a poor prognosis. While radical surgical resection is considered the mainstay of treatment, the optimal surgical approach and the role of adjuvant …

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Pathologic Complete Response and Long-Term Survival After Preoperative Chemotherapy for Transverse Colon Cancer With Para-Aortic Lymph Node Metastases

Marina JIMBA, Kentaro Nakajima, Masashi Momiyama, Teppei Morikawa et autres

A 52-year-old male patient was diagnosed with transverse colon cancer and synchronous stage IVA para-aortic lymph node (PALN) metastases (cT3N1bM1a of the lymph node). Six courses of mFOLFOX6 plus bevacizumab were administered as neoadjuvant chemotherapy. Computed tomography showed shrinkage of the primary …

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Multicenter randomized phase II study on S-1 and oxaliplatin therapy as an adjuvant after hepatectomy for colorectal liver metastases (YCOG1001)

Mayumi Ozawa, Jun Watanabe, Atsushi Ishibe, Koki Goto et autres

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Effects of neoadjuvant chemotherapy for patients with obstructive colon cancer: A multicenter propensity score‐matched analysis ( YCOG2101 )

Kazuya Nakagawa, Atsushi Ishibe, Hiroki Ohya, Mayumi Ozawa et autres

Abstract Aim Obstructive colon cancer is locally advanced colon cancer with poor prognosis. However, the effect of neoadjuvant chemotherapy (NAC) on obstructive colon cancer remains unclear. Therefore, this study aimed to investigate the safety and efficacy of NAC in patients with obstructive …

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Pancreas-sparing partial duodenectomy as an alternative to emergency pancreaticoduodenectomy for a major duodenal perforation: a case report

Genki Watanabe, Shouichi Satou, Mao Tsuru, Masashi Momiyama et autres

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Exploratory randomized phase II trial for optimizing treatment dosage and duration of adjuvant S‐1 plus oxaliplatin in patients with stage III colon cancer: YCOG1402 ( SOAP trial)

Yusuke Suwa, Jun Watanabe, Hirokazu Suwa, Mayumi Ozawa et autres

Abstract Introduction Conventionally, the recommended duration of adjuvant chemotherapy of colon cancer had been 6 months. The IDEA Collaboration suggested that shortening capecitabin and oxaliplatin (CAPOX) adjuvant chemotherapy may be possible. S‐1 and oxaliplatin (SOX) treatment is standard treatment in metastatic colorectal …

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Modified Intestinal Derotation Procedure with Reversed Kocherization to Facilitate Mesopancreas Excision During Pancreaticoduodenectomy

Genki Watanabe, Shouichi Satou, Motomu Tanaka, Masashi Momiyama et autres

BACKGROUND: Although intestinal derotation procedure has advantages of facilitating mesopancreas excision during pancreaticoduodenectomy, the wide mobilization takes time and risks injuring other organs. This article describes a modified intestinal derotation procedure in pancreaticoduodenectomy and its clinical impact on short-term outcomes. METHODS: The …

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Lengthened Efferent Limb in Braun Enteroenterostomy Reduces Delayed Gastric Emptying After Pancreaticoduodenectomy

Genki Watanabe, Shouichi Satou, Motomu Tanaka, Masashi Momiyama et autres

BACKGROUND: Delayed gastric emptying (DGE) is a common complication after pancreaticoduodenectomy (PD), but a method to prevent DGE has not been established. This study aims to demonstrate a novel technique utilizing a lengthened efferent limb in Billroth-II (B-II) reconstruction during PD and …

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P-181 Exploratory randomized phase II trial for optimizing treatment dosage and duration of adjuvant S-1 plus oxaliplatin in patients with stage III colon cancer (SOAP trial)

Yusuke Suwa, Jun Watanabe, Hirokazu Suwa, Mayumi Ozawa et autres

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Relationship between stromal regulatory T cells and the response to neoadjuvant chemotherapy for locally advanced rectal cancer

Kentaro SEKIZAWA, Kazuya Nakagawa, Yasushi Ichikawa, Hirokazu Suwa et autres

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Cystic Lesion of Dissected Pararectal Lymph Node in a Female Patient With Rectal Carcinoma: A Rare Pattern of Nodal Metastasis Mimicking a Serous Inclusion Cyst

Hirotsugu Hashimoto, Sakiko Miura, Kentaro Kamei, Yoshio Masuda et autres

Nodal metastatic foci of colorectal carcinoma are usually solid nodules. Serous inclusions are occasionally found in lymph nodes, particularly in female patients, and they occasionally form cysts. An 86-year-old woman was treated with laparoscopic low anterior resection and D3 lymph node dissection …

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Long-term survival after pancreatic metastasis resection from breast cancer: a systematic literature review

Atsuki Nagao, Tamaki Noie, Hajime Horiuch, Haruyasu Yamada et autres

BACKGROUND: Patients with advanced-stage breast cancer often demonstrate pancreatic metastases. However, pancreatic metastases resection from breast cancer has been rarely performed, with only 20 cases having been reported to date. CASE PRESENTATION: A 49-year-old woman presented to our hospital in September 2003 …

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