[Preoperative spontaneous regression of type B3 thymoma;report of a case].

A 65-year-old man experiencing chest oppression was admitted to our hospital. Contrast-enhanced chest computed tomography (CT) showed a 71×52-mm cystic mass with an enhanced wall in the thymus. The CT-guided needle biopsy of the tumor only revealed the presence of necrotic tissue.

[A case of advanced colon cancer responding to l-LV+5-FU as neoadjuvant chemotherapy].

The patient was a 45-year-old woman who had ascending colon cancer with multiple paramesenteric and paraaortic lymph node metastases. Combined l-LV 400 mg/body (250 mg/m2) +5-FU 950 mg/body (600 mg/m2) therapy was carried out as neoadjuvant chemotherapy. After 2 cycles of this therapy, the lymph node metastases were not detectable on computed tomography.

[Two cases of advanced and recurrent gastric cancer responding markedly to TS-1/CDDP therapy].

Case 1: A 77-year-old woman with advanced gastric cancer and peritoneal dissemination was treated with TS-1/CDDP therapy. TS-1 (100 mg/day) was orally administered for 21 days and CDDP (70 mg/body) was administered intravenously on day 8. After 2 courses reduction in size of the primary carcinoma was observed (PR).