Figure 1 Manual psoas muscle area measurement is seen using preoperative magnetic resonance imaging scans. Measurement of right and left psoas muscle area are seen (A, B) in a 43-year-old female ...

INTRODUCTION Psoas muscle abscess is a rare disease that primarily affects young adults and men. In 1992, its annual global incidence was estimated at 12 cases/year, but current incidence is unknown 1 ...