Bone Hydatidosis: A Rare Entity Difficult to Diagnose That Should Not be Overlooked

Bone hydatidosis is a rare entity accounting for 0.2 to 4% of all cases reported in the literature, half of which concern the spine. It follows the haematogenous dissemination of the echinococcus multilocularis or granulosis parasite. It is often secondary to liver or lung involvement, but more rarely primary. The clinic is non-specific, with insidious and progressive development of the disease, which explains why it is so rare among children. The average age at which bone hydatidosis is discovered is 52, following complications such as neurological disorders or pathological fractures. Diagnosis can be difficult in non-endemic regions because it is not systematically evoked. It is therefore usually carried out during or after surgery. Surgical treatment is the gold standard, in association with adjunctive medical treatment. We report here a rare case of primary involvement of bone hydatidosis.