Abstract
A 75-year-old woman with a pelvic tumor measuring 13 cm in diameter, which was found by follow-up abdominal CT after extended right lobectomy and partial lateral segmentectomy for metachronous liver metastases from leiomyosarcoma originated duodenum, was referred to our hospital. Chest CT also showed a solitary nodule in left lower lobe measuring 1.5 cm. Resections of pelvic tumor and a small peritoneal nodule following left lower lobectomy of lung were performed subsequently. Pathological examination revealed that all of the resected tumors consisted of spindle-shaped tumor cells which were positive for c-kit immunohistochemically. Thus, it was diagnosed as metastases of GIST. Aggressive resection of metastases from GIST, especially in cases with a long disease-free interval between initial resection and recurrences might contribute to prolonged prognosis.
