A Case of Re-excision for Multiple Recurrences Developed One Year after Surgery for Mesenteric Fibromatosis

Abstract

A 70-year-old man presented with an intra-abdominal mass. A contrast-enhanced abdominal CT scan and contrast-enhanced abdominal MRI showed a faintly enhanced large mass measuring 5 cm in the longest diameter with a well-defined border in the left upper quadrant of abdomen. Pathologically and immunohistologically, the tumor was diagnosed as mesenteric fibromatosis. One year after the resection, a follow-up CT scan showed two well-circumscribed tumors ; one in the small bowel mesentery and the other, near the transverse colon. The tumors were suspected to be recurrences of mesenteric fibromatosis and were resected with a part of the jejunum and transverse colon, respectively. The pathological diagnosis was recurrence of mesenteric fibromatosis. One year and 10 months after the re-resection, the patient is alive without recurrence. We experienced a very rare case of a patient undergoing re-surgery for multiple recurrent mesenteric fibromatosis after resection of mesenteric fibromatosis which developed without history of familial adenomatous polyposis, surgery, or trauma.