Primary aneurysmal bone cyst of clavicle. Two cases report.

Abstract

The aneurysmal bone cyst is a benign cystic lesion of bone, but locally aggressive. It is a rare disease and affects mainly children ; clavicular location is only 2.5 to 3% of cases. Its etiology remains hypothetical. The clinical diagnosis is not obvious due to the absence of typical clinical picture. And if imaging allows strong presumptions of diagnosis, histological study is still needed to confirm the right diagnosis and especially to eliminate the main differential diagnoses. The treatment remains controversial but it depends mainly on location, degree of aggressiveness, tumor size, patient age and tumor rapports. We report two cases of clavicular primary aneurysmal bone cyst treated by curettage, cauterization and allograft.