Isolated flat desmoid-type terminal ileal mesenteric fibromatosis masquerading as lower ureteric stricture-an intraoperative surprise

Özet

Ureteral strictures are usually caused by ureteral calculi, endoscopic instrumentation, infections like tuberculosis, surgical dissection, radiation, malignancy and periureteral fibrosis. A 42-year-old man presentedwith right loin pain 2 months previously. Contrast-enhanced computed tomography showed right lowerureteral stricture and he was scheduled for right ureteral reimplantation. Intraoperatively, a large hard massarising from the mesentery of the terminal ileum infiltrating the retroperitoneum and encasing the rightexternal iliac artery, vein and ureter was identified. The mass was resected and psoas hitch was performedover a 5F (26 cm) double J stent. Patient was discharged on tenth postoperative day and is still doing wellat 18 months of follow up period. We are reporting this case to highlight the rare possibility of mesentericfibromatosis and its management.