Department of Internal Medicine, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea.
Korean J Gastroenterol. 2020 Nov 25;76(5):251-255. doi: 10.4166/kjg.2020.096.
The World Health Organization classified rectal neuroendocrine tumors (NETs) as malignant in 2010 owing to their distant metastasis potential. On the other hand, in cases of small rectal NETs (<10 mm), which have a low risk of metastasis, endoscopic removal is the first-line therapeutic option, and regular surveillance is not recommended. The authors report a case of a small, well-differentiated rectal NET, which recurred as multiple hepatic metastases 5 years after apparent complete removal using endoscopic methods.
世界卫生组织（WHO）于 2010 年将直肠类器官神经内分泌肿瘤（NET）归类为恶性肿瘤，因为其具有远处转移的潜能。另一方面，对于小的直肠 NET（<10mm），其转移风险较低，内镜下切除是首选的治疗方法，不建议常规监测。作者报告了 1 例小的、分化良好的直肠 NET，在采用内镜方法明显完全切除 5 年后，复发为多个肝转移。
