Psoas abscess involving a renal-digestive fistula: A case report

Abstract

A psoas abscess is a rare but not exceptional entity. Given its rarity and non-specific symptomatology, as well as its generally insidious subacute onset, diagnosis and treatment are often delayed. We present the case of a 40-year-old patient with a psoas abscess due to E. coli pyelonephritis, complicated by a renal-colic fistula. Clinicians should bear in mind that a psoas abscess is often diagnosed before primary disease is detected, and should be alert to these primary lesions. Follow-up of at least one year is recommended due to relapse reported in 15-36% of cases up to one year after initial presentation.