[Locally Advanced Sigmoid Colon Cancer in an Elderly Patient Treated with Curative Resection after Successful Panitumumab Treatment].

An 84-year-old woman had locally advanced sigmoid colon cancer that was unresectable because of deep invasion in the left pelvic wall. Transverse double-barrel colostomy was performed owing to stenosis in the sigmoid colon. The patient's performance status score was 2, and it was difficult to administer cytotoxic chemotherapy. Single-agent panitumumab chemotherapy was initiated. In addition, although S-1 was administered for 4 days in the fourth cycle, it was discontinued owing to drug intolerance. Panitumumab was administered seven times. The tumor size markedly reduced, and sigmoid colectomy was performed. Thus, single-agent panitumumab chemotherapy is a possible treatment option for advanced colorectal cancer in elderly patients.

[A Case of Long-Term Survival of a Patient with Gastric Cancer with Synchronous Liver Metastasis and Portal Vein Thrombus after Multidisciplinary Treatment].

A 77-year-old man was diagnosed with gastric cancer with synchronous single liver metastasis and portal vein thrombus. His HER2 immunohistochemistry tumor score was 3+; therefore, we administered trastuzumab plus capecitabine plus cisplatin. After 2 courses of chemotherapy, we observed disappearance of the portal vein thrombus and tumor reduction as a partial response, according to the RECIST guidelines. We performed distal gastrectomy and right lobectomy; the therapeutic grades of the primary and metastatic tumors were 1a and 2, respectively. We administered postoperative chemotherapy, and no recurrent lesions have appeared 2 years after surgery. Multidisciplinary treatment for gastric cancer with liver metastasis might be a feasible and useful strategy.