A 70-year-old man had undergone a total gastrectomy for early stage gastric cancer. A year after gastrectomy, a computed tomography showed three mesenteric masses, and we performed careful observation. The 2-year postoperative examination indicated slowly growing masses. We decided to perform diagnostic surgery to evaluate the tumors. There were three mesenteric masses (1.5cm, 4cm and 1.5cm in diameter). Histological examination showed that the tumors were desmoids. A year after surgery, he was doing well with no evidence of recurrence of the desmoids or the gastric cancer.