Kenji Yamazaki

Efficacy and Safety of Oral Prednisolone and Budesonide MMX for Outpatient Induction Therapy in Active Ulcerative Colitis: A Multicenter Retrospective Cohort Study

Kentaro Kojima, Jun Takada, Keisuke Iwata, Kiichi Otani et autres

Background/Objectives: Oral prednisolone (PSL) and budesonide multi-matrix (BUD-MMX) are used to induce remission in ulcerative colitis (UC); however, their therapeutic positioning remains unclear. Comparative data from real-world practices are limited. This study assessed the efficacy and safety of PSL and BUD-MMX in …

jp (code pays fourni par la source)

Enhancer of Zeste Homolog 1 and 2 Inhibitor-Induced Colitis Mimicking Immune Checkpoint Inhibitor-Induced Colitis

Keisuke Iwata, Kenji Yamazaki, Ryoji Kushima, Toshiki Yamada et autres

An 80-year-old woman with relapsed nodal T-follicular helper cell lymphoma, not otherwise specified, developed severe watery diarrhea during valemetostat therapy. Colonoscopy revealed diffuse mucosal erythema and edema, and a biopsy showed lymphoplasmacytic infiltration, crypt abscesses, and apoptotic bodies, consistent with immune checkpoint …

jp (code pays fourni par la source)

Gastric Foveolar‐Type Hyperplastic Polyp of the Duodenum With GNAS and KRAS Mutations: A Potential Precursor to Neoplasia

Kenji Yamazaki, Ryoji Kushima, Noritaka Ozawa, Haruka Koizumi et autres

ABSTRACT We report a gastric foveolar‐type hyperplastic polyp of the duodenum harboring mutations in the GNAS and KRAS genes. The lesion was incidentally detected during a routine upper gastrointestinal endoscopy in a man in his 50s. It appeared as a 10‐mm elevated …

jp (code pays fourni par la source)

Superficial esophageal squamous cell carcinoma with esophageal lichen planus and esophageal epidermoid metaplasia treated with endoscopic submucosal dissection

Naoya Masuda, Kenji Yamazaki, Ryoji Kushima, Daiki Hirota et autres

We present a case of a 70-year-old female patient who was initially diagnosed with oral lichen planus at a dental and oral surgery clinic. She underwent an upper gastrointestinal endoscopy for further evaluation of her dysphagia. Endoscopic and histopathological examinations revealed that …

jp (code pays fourni par la source)

Linear Mucosal Defect in Nintedanib-associated Colitis: A Rare Case with Collagenous Colitis-like Features

Keisuke Iwata, Kenji Yamazaki, Ryoji Kushima, Noritaka Ozawa et autres

A 70-year-old man with idiopathic pulmonary fibrosis undergoing nintedanib treatment for 2 years experienced worsening diarrhea, which prompted colonoscopy. An examination revealed a coarse mucosal appearance and erosion extending from the rectum to the ascending colon with linear mucosal defects in the …

jp (code pays fourni par la source)

Villous atrophy in celiac disease: striking differences in endoscopic findings between the duodenal bulb and descending duodenum

Kenji Yamazaki, Ryoji Kushima, Noritaka Ozawa, Shogo Shimizu et autres

jp (code pays fourni par la source)

Revealing autoimmune gastritis: Polypoid nodule scar development after endoscopic submucosal dissection for early gastric cancer

Naoya Masuda, Kenji Yamazaki, Yasuhiko Maruyama, Ryoji Kushima et autres

Abstract Endoscopic submucosal dissection (ESD), the standard treatment for early gastric cancer, typically results in homogeneous flat scars. However, in some cases, polypoid nodule scars (PNS) may develop, complicating the cancer recurrence assessment. This case report describes a 60‐year‐old man with a …

jp (code pays fourni par la source)

Endoscopic band ligation alone and combined with clipping for colonic diverticular bleeding: Retrospective comparative study

Noritaka Ozawa, Kenji Yamazaki, Kazuki Yamauchi, Daiki Hirota et autres

Abstract Clipping alone or endoscopic band ligation (EBL) alone are the main endoscopic hemostatic methods for colonic diverticular bleeding (CDB). We have established a novel method combining EBL and clipping (EBL-C) for hemostasis of CDB (Endoscopy E-videos); this study evaluated its usefulness. …

jp (code pays fourni par la source)

Robot-assisted anterior resection of rectal cancer in a patient with abdominal aortic aneurysm using a monitoring laparoscope: a case report

Junpei Takashima, Hirotoshi Kobayashi, Ayaka Koizumi, Fumi Shigehara et autres

Introduction and importance: We present the first case of robot-assisted anterior resection for rectal cancer in a patient with abdominal aortic and common iliac aneurysms using a monitoring laparoscope for enhanced safety. Case presentation: An 86-year-old man presented with bloody stool and …

jp (code pays fourni par la source)

Xanthomatosis Coli Associated With Nontuberculous Mycobacterial Disease

Naoya Masuda, Kenji Yamazaki, Ryoji Kushima

A man in his 60s, undergoing follow-up for nontuberculous mycobacterial (NTM) pulmonary disease without medication, presented for chronic soft stool evaluation. Colonoscopy revealed yellowish mucosal changes throughout the colon, particularly in the transverse colon (Figure A), with small scattered lymphoid follicles (Figure …

jp (code pays fourni par la source)

Collagenous colitis diagnosed after Clostridioides difficile infection in a 2‐year‐old girl

Soichi Iritani, Noritaka Ozawa, Kenji Yamazaki, Ryoji Kushima et autres

The authors declare no conflict of interest. The data that support the findings of this study are available from the corresponding author upon reasonable request.

jp (code pays fourni par la source)

[Two Cases of Delayed Anastomotic Leakage Caused by Bevacizumab].

Mayu Kunimoto, Hirotoshi Kobayashi, Ayaka Koizumi, Fumi Shigehara et autres

We report 2 cases of delayed anastomotic leakage caused by bevacizumab in colorectal cancer patients. The first case is a 78-year-old woman diagnosed with transverse colon cancer(cT4b[stomach, ileum]N1bM0, cStage Ⅲc)who underwent open extended right hemicolectomy, distal gastrectomy(R-Y)and partial ileal resection. Six months …

jp (code pays fourni par la source)