2. CASE PRESENTATION :
A 47 year old patient, from a rural area, presented to the emergency departement suffering from pelvic pain with limping on walking for six months. He was operated 10 years ago for hydatid cyst of the left liver: he had a resection of the protruding dome.
The patient had no fever. Abdominal examination showed tenderness in the left iliac fossa.
X-ray of the pelvis showed osteolysis of the left iliac bone