The Desmoid Tumor Research Foundation

August 2026

Obstructive Pyelonephritis Secondary to Ureteral Compression by an Intra-Abdominal Desmoid Tumor in Familial Adenomatous Polyposis: A Case Report

Author Information

Alireza Mehrban 1, Mehdi Karimi 1 2, Mohammad Taghi Hamidian 3, Mahdi Masoumi 1, Elahe Tari Najarkolaei 4, Abdolreza Babamahmoodi 5

1Clinical Department, Amol Campus of Medicine Mazandaran University of Medical Sciences (MazUMS) Sari Iran. 2Faculty of Medicine Bogomolets National Medical University (NMU) Kyiv Ukraine. 3Babol University of Medical Sciences Babol Iran. 4Department of Radiology, School of Medicine Tehran University of Medical Sciences Tehran Iran. 5Antimicrobial Resistance Research Center, Communicable Diseases Institute Mazandaran University of Medical Sciences Sari Iran.

Publication

Clin Case Rep

Summary

In patients with familial adenomatous polyposis, intra-abdominal desmoid tumors should be recognized as a rare but important cause of ureteral obstruction and obstructive pyelonephritis. Prompt cross-sectional imaging, early recognition, and multidisciplinary management are essential for preserving renal function, treating infection, and preventing irreversible urinary tract complications.

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