Abstract
We report on 2 cases of intra-abdominal desmoid tumor mimicking locoregional recurrence after gastrectomy for early gastric cancer. Case 1: A 66-year-old woman underwent a distal gastrectomy with D2 lymph node dissection for gastric cancer. Pathological diagnosis was pT1a (m) pN0 cM0: pStage IA. Abdominal CT showed a tumor near the residual stomach 12 months after surgery. The tumor size increased, and PET showed a mild uptake of fluorodeoxyglucose (FDG). Because we could not deny the possibility of recurrence from gastric cancer, the tumor was removed. The histological diagnosis was desmoid tumor. Case 2: A 72 year-old woman underwent a distal gastrectomy with D2 lymph node dissection for gastric cancer. Pathological diagnosis was pT1a (m) pN0 cM0: pStage IA. Abdominal CT showed a tumor near the residual stomach 16 months after surgery. The tumor was removed, and histological diagnosis was desmoid tumor. In gastric cancer patients after gastrectomy, it is difficult to distinguish desmoid tumor from recurrence of gastric cancer. When the possibility of recurrence is low, surgical resection as a diagnostic treatment should be recommended.
