Diagnosis of a submucosal mass at the staple line after sigmoid colon cancer resection by endoscopic cuttingmucosa biopsy

• 作者: Alan K Lefor Hironori Yamamoto Hisanaga Horie Homare Ito Keijiro Sunada Koji Koinuma Mitsuaki Morimoto Naohiro Sata Yoshikazu Hayashi
• 来源期刊: 世界胃肠内镜杂志：英文版（电子版）
• 学科: 医学
• 关键词: SUBMUCOSAL tumor STAPLE LINE ENDOSCOPIC cutting-mucosa BIOPSY
• 年，卷（期）: 2016,（8）
• 页码范围: 374-377
• 页数: 4页
• 分类号: R

摘要

A 48-year-old man underwent laparoscopic sigmoid colon resection for cancer and surveillance colonoscopy was performed annually thereafter. Five years after the resection, a submucosal mass was found at the anastomotic staple line, 15 cm from the anal verge.Computed tomography scan and endoscopic ultrasound were not consistent with tumor recurrence. Endoscopic mucosa biopsy was performed to obtain a definitive diagnosis. Mucosal incision over the lesion with the cutting needle knife technique revealed a creamy white material, which was completely removed. Histologic examination showed fibrotic tissue without caseous necrosis or tumor cells. No bacteria, including mycobacterium,were found on culture. The patient remains free of recurrence at five years since the resection.Endoscopic biopsy with a cutting mucosal incision is an important technique for evaluation of submucosal lesions after rectal resection.