Desmoid fibromatosis – a rare mesenteric tumor

In the following report, we present the case of a 31-year-old patient examined for a suspected small bowel tumour. Small bowel tumours are relatively rare and definitive diagnosis is often preceded by surgical resection. The same was true for our patient examined for a soft tissue lesion found with imaging techniques in close proximity to the small intestine. After ruling out hormonal activity, diagnostic laparotomy was performed. Desmoid fibromatosis, a rare tumour of the mesentery, was confirmed histopathologically. Although without metastatic potential, desmoid fibromatosis is a tumour with moderately malignant potential for aggressive growth into surrounding structures and organs and a large percentage of local recurrences.