Abstract
We encountered and report herein a case in which isolated metastasis occurred in a right obturator lymph node after surgery for cecum carcinoma. A 72-year-old woman underwent ileocecal resection for cecal carcinoma in January 2014. The tumor was type 2, moderately differentiated adenocarcinoma + mucinous cancer, with retroperitoneal infiltration (pT4b pN0 cM0 pStage II). The risk of recurrence was considered high, and postoperative adjuvant chemotherapy was administered. Abdominal contrast-enhanced CT after the end of adjuvant chemotherapy showed enlargement of a right obturator lymph node, and recurrence was diagnosed 9 months postoperatively. She was treated with chemotherapy, and imaging assessments showed no findings of recurrence other than in the right obturator lymph node. Surgery to remove the enlarged right obturator lymph node was therefore performed in April 2015. In terms of histopathology, the resected lymph node was defined as metastasis of the cecal carcinoma. We report the very rare event of metastatic recurrence of cecal carcinoma in an obturator lymph node.
