INTESTINE Vol.23 No.3(5-1)

Theme Metastatic recurrence and prognosis after endoscopic treatment for early colorectal carcinoma
Title A case of rectal LST lesion diagnosed as intramucosal carcinoma with lymph node metastasis recurrence
Publish Date 2019/06
Author Yuki Mitsuyoshi Department of Gastroenterology, The Cancer Institute Hospital of JFCR
Author Shoichi Saito Department of Gastroenterology, The Cancer Institute Hospital of JFCR
Author Teruhito Kishihara Department of Gastroenterology, The Cancer Institute Hospital of JFCR
Author Daisuke Ide Department of Gastroenterology, The Cancer Institute Hospital of JFCR
Author Akiko Chino Department of Gastroenterology, The Cancer Institute Hospital of JFCR
Author Masahiro Igarashi Department of Gastroenterology, The Cancer Institute Hospital of JFCR
Author Yoshiya Fujimoto Department of Lower GI Surgery, The Cancer Institute Hospital of JFCR
Author Hiroshi Kawachi Department of Pathology, The Cancer Institute Hospital of JFCR
[ Summary ] A colonoscopy was performed on a 76 year old female by blood clot analysis. We recognized a huge laterally spreading tumor (LST) about 15 cm in size from the rectum (Rb to Ra). Endoscopic submucosal dissection (ESD) was performed. The pathological diagnosis is the result of LST-G (granular), 150x100 mm, adenocarcinoma (tub 1-tub 2) with tubular adenoma with moderate-severe atypia, Tis(M), ly (-), v(-), HM0, VM0 Met. A CT scan in the 2nd year after surgery revealed an enlarged lymph node (7 mm) in the rectum.
We diagnosed lymph node metastasis and performed a laparoscopic ultra-low anterior resection. In this case, the lesion is huge and cutting is performed at intervals of 5 mm. There was a possibility that SM infiltration site could not be cut out. We think that it is possible to avoid such a situation by using the stereoscopic microscope and confirming the pit pattern again.s.
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