[A case of successfully treated lower rectal cancer with both inguinal lymph nodes by chemoradiotherapy]

We report a case of successfully treated lower rectal cancer with both inguinal lymph nodes by chemoradiotherapy. A 59-year-old man presented with anal pain. A colonoscopy revealed primary rectal cancer. The histological diagnosis was well to moderately differentiated adenocarcinoma. A computed tomography showed metastases to pararectal, both inguinal lymph nodes and right external iliac. After a ileostomy construction was done, he was treated with intensity modulated radiotherapy (a total 50.4 Gy) and chemotherapy with FOLFOX. The primary tumor had completely disappeared, and metastases to lymph nodes showed a remarkable shrinkage after the chemoradiotherapy. Nine months after radiation therapy, however, multiple lung and liver metastases were observed by a computed tomography, which were treated by systemic chemotherapy with FOLFOX and bevacizumab. The primary tumor and metastases to lymph nodes are still controlled well for 2 years after the initial chemoradiotherapy.