Inflammatory Pseudotumor Suspected of Port Site Recurrence after Laparoscopic Colectomy—A Case Report—

Abstract

An 89-year-old woman was admitted to our hospital with a complaint of left lower abdominal pain. Abdominal computed tomography revealed a heterogeneous enhanced tumor measuring 50 × 40 mm in diameter in the abdominal wall of the left lower quadrant. The patient had a past history of laparoscopic right colectomy for ascending colon cancer (Stage I), which was performed 6 years ago. A port site recurrence of rectal cancer after surgery was suspected due to a history of cancer and thus the tumor was resected. Histologically, the tumor comprised spindle cells with high inflammatory cell infiltration. The tumor cells were immunohistochemically negative for cytokeratin, c-kit, S-100, and ALK. The tumor was finally diagnosed as inflammatory pseudotumor. The patient has experienced no recurrence one year after surgery.