[A Case of Solitary Metastasis to the Small Intestine with Lymph Node Metastasis after Surgery in Rectal Cancer].

The patient was a 63-year-old man. He underwent laparoscopic anterior resection of a rectal cancer when he was 60 years. The tumor was diagnosed as T3N0M0, Stage Ⅱ, and he was followed up without adjuvant chemotherapy. Two years and 9 months after surgery, anemia and increased levels of tumor markers were observed. CT scan revealed a mass in the mesentery. We suspected rectal cancer recurrence and performed partial resection of the jejunum with regional lymph node dissection. As the tumor appearance and histological findings were similar to those of the previous rectal cancer, the tumor was diagnosed as hematogenous metastasis of rectal cancer with lymph nodes metastasis. The hematogenous metastasis of rectal cancer to the small intestine is rare; however, it may cause metastasis to regional lymph nodes. Therefore, lymph node dissection may be necessaryin surgical interventions for metastatic tumors of the small intestine.