<div>Figure1. Edema and fluid collection within left iliopsoas muscle and
left pectineus with fluid collection within left iliopsoas muscle</div><div>No blood or bone marrow culture was performed due to the low chance of
detection and the long time required (1). Based on these findings, the
diagnosis of Brucellosis was made and according to the Textbook of
Pediatrics Nelson (3,4), the patient was treated with Rifampin (600 mg/
daily) and Doxycyclin (200 mg/ q12h). Despite the consult of the
orthopedic surgeon regarding surgical drainage, we waited to observe the
patient’s response to antibiotic therapy.</div><div>After the initiation of the medical treatment, the signs and symptoms of
the patient started to resolve.</div><div>At discharge, the gait pattern of the patient was normal. He had no
complaints of inguinal pain, fever, malaise, or any other symptoms.</div><div>In six months of follow-up, no relapse occurred. Ultrasound was
performed and showed no evidence of Psoas abscess.</div><div>Therefore, the patient was treated successfully only with Oral
medication and without any abscess drainage.</div>