Psoas abscess associated with iliac vein thrombosis and piriformis and gluteal abscesses

Background: A 14-year-old boy was admitted because of lumbago and high fever. Methods/Results: Computed tomography scans revealed psoas, piriformis and gluteal abscesses as well as right iliac vein thrombus. A right femoral venogram demonstrated compression from the psoas abscess and thrombosis of the common iliac vein. Appropriate surgical drainage, administration of antibiotics and anticoagulant therapy were effective in the present case. Conclusions: This is the first report of primary psoas abscess associated with vein thrombosis and is also unique in that abscesses were multiple without predisposing diseases or trauma.