| Series |
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| Title |
Discontinuation of infliximab in patients with ulcerative colitis in remission (HAYABUSA): a multicentre, open-label, randomised controlled trial |
| Author |
Eiji Harada |
Department of Gastroenterology, Akita Red Cross Hospital / Department of Gastroenterology, Tokushima Red Cross Hospital |
| Author |
Yoshihito Tanaka |
Department of Gastroenterology, Akita Red Cross Hospital / Department of Molecular Diagnostic Pathology, Iwate Medical University, School of Medicine |
| Author |
Hiro-o Matsushita |
Department of Gastroenterology, Akita Red Cross Hospital |
| Author |
Kenjiro Yoshikawa |
Department of Gastroenterology, Akita Red Cross Hospital |
| Author |
Ryo Takagi |
Department of Gastroenterology, Akita Red Cross Hospital |
| Author |
Bunichiro Kato |
|
| Author |
Shin Sasaki |
Department of Gastroenterology, Akita Red Cross Hospital |
| Author |
Hiroshi Hashimoto |
Department of Gastroenterology, Akita Red Cross Hospital |
| Author |
Tamotsu Sugai |
Department of Molecular Diagnostic Pathology, Iwate Medical University, School of Medicine |
| Author |
Noriyuki Uesugi |
Department of Molecular Diagnostic Pathology, Iwate Medical University, School of Medicine |
| Author |
Makoto Eizuka |
Department of Molecular Diagnostic Pathology, Iwate Medical University, School of Medicine |
| Author |
Hiro-o Yamano |
Department of Gastroenterology and Hepatology, Sapporo Medical University School of Medicine |
| [ Summary ] |
We present a case of carcinoma in sessile serrated adenoma/polyp based on Type II-like pit pattern with inconspicuous ductal dilatation. A follow-up colonoscopy was performed for a 70-year-old man. The patient presented with a Type IIa lesion (8mm in diameter) in the transverse colon. On magnifying chromoendoscopy, most parts of the lesions had a Type II-like pit pattern, characterized by inconspicuous dilatation and star-like findings. Moreover, some parts showed heterogeneity with a diameter of 2 mm; these parts were evaluated to be Type VI pit pattern. In addition, crystal violet staining recognized a small region where a slightly large and complicated star-like pit existed between the above two regions. We considered that a few serrated lesions had become malignant in most of their areas with changes in the atypia degree. The depth of invasion was classified as Tis. Endoscopic mucosal resection was performed. The pathological diagnosis was moderately differentiated adenocarcinoma (tub2) in sessile serrated adenoma/polyp; depth, pTis; Ly0; V0; pHM0; pVM0. |