Laparoscopic drainage of retroperitoneal abscess secondary to pyogenic sacroiliitis.

Retroperitoneal abscesses are rare complications of pyogenic sacroiliitis. Diagnosis is often delayed due to the initial non-specific symptoms and signs and also a low awareness of the clinical presentation and diagnostic procedures among clinicians. We describe a case of an 18-year-old man who was diagnosed with septic arthritis of his left sacro-iliac joint which was complicated by a retroperitoneal abscess. After discussion with the radiologist and orthopaedic surgeons, the abscess was successfully drained via minimally invasive surgery transperitoneally.