# Congenital absence of the right iliac system with aneurysmal degeneration of a collateral lumbar artery: Diagnosis and treatment

## TL;DR

A rare case of missing right iliac arteries and a dangerous artery enlargement is diagnosed and treated in a 67-year-old man.

## Contribution

This case report highlights the diagnosis and treatment of a pseudoaneurysm in a patient with a congenital absence of the iliac arterial system.

## Key findings

- The patient had a congenital absence of the right iliac system.
- A pseudoaneurysm of a collateral lumbar artery was diagnosed and treated.
- The case emphasizes the need for tailored treatment in such rare anatomical conditions.

## Abstract

Congenital absences of the iliac arterial system are rare and often discovered incidentally. In these cases, treatment and operative strategy may require adjustment based on unique anatomy. In this report, we present a 67-year-old man who presented with a symptomatic large pseudoaneurysm of the lumbar artery secondary to absence of the iliac arterial system. Herein, we discuss treatment of this patient and review congenital arterial abnormalities.