[A Case of Metastasis to the Base of the Skull after Rectal Cancer Operation with Symptom Management via Radiotherapy].

In 2009, A 67-year-old woman underwent high anterior resection for rectal cancer(RS, type 2, pT3, pN1, cM0, pStage III a). U FT/LV was administered for 6 months as adjuvant chemotherapy after the operation. Because peritoneum dissemination and pelvic lymph node metastasis developed 9 months after the operation, CapeOX plus Bmab therapy was started, and we monitored the cancer partial response for the next 6 years. Six years and 9 months after the operation, we detected metastasis to the sacrum; thus, radiotherapy was started. Seven years after the first operation, we detected pulmonary, liver, distant lymph node, and subcutaneous metastasis. Additionally, in the next month, she complained of double vision and dysarthria, and metastasis to the base of the skull was diagnosed via head MRI scanning. We started radiotherapy, and the symptoms gradually improved. Although we started IRIS plus Bmab therapy for pulmonary, liver, distant lymph node, and subcutaneous metastasis, it became a progressive disease(PD). She passed away 7 years and 6 months after the first operation. In this case, radiotherapy was useful for symptom management of metastasis to the base of the skull after surgery for rectal cancer, which is an extremely rare occurrence.