ABSTRACT

A 28-year-old female presented with a palpable mass on her right groin and a 6-month history of progressively worsening low back pain. She also had intermittent numbness and tingle on the dorsum and lateral part of the right foot. Physical examination revealed tenderness with palpation on the lumbar spinous process and especially on the right paraspinal muscles and groin. A lumbar spine magnetic resonance imaging study demonstrated a psoas abscess originating from the L5-S1 disc space and extending to the right inguinal region. Computerized tomography-guided aspiration of a psoas abscess was performed and the aspiration material which subsequently grew in culture and were identified as Mycobacterium tuberculosis by biochemical reactions. Psoas abscess drainage and irrigation was performed with transperitoneal approach and lumbar stabilization was performed with posterior approach. Anti-tuberculous mediation given for 12 months postoperatively. The lumbar spine magnetic resonance imaging study showed no evidence of psoas abscess at this time period. The patient was asymptomatic at the 24-month follow-up. Pott disease associated with psoas abscess originating from lumbosacral region was rarely reported in the literature.