Psoas abscess is usually associated with tuberculous spondylitis, but
also occurs in relation to inflammatory bowel disease. We present 17 c
ases of primary pyogenic psoas abscess seen during a 10 year period at
the King Fahd Hospital, Al-Khobar: There were 13 males and 4 females
with a mean age of 24.9 years (range one to 55 years). Five patients h
ad sickle cell disease. The average delay in presentation was 4.5 week
s (range 2 to 9 weeks). Pyrexia and a painful hip with a flexion defor
mity were the most obvious signs. The sedimentation rate and white cel
l count were markedly raised in every case. Staphylococci were culture
d in 10 and anaerobic streptococci, salmonella and E coli in 2 each. U
ltrasonography, CT and MR imaging were used to confirm the diagnosis.
Early recognition and drainage are important to ensure a rapid recover
y.