ANEURYSMAL BONE-CYST INVOLVING THE LUNATE

Aneurysmal bone cysts are rare lesions which even more rarely involve the bones of the hand, We report a case of a cyst involving the lunate which was initially mistaken for interosseous ganglion, Due to delay in diagnosis, marked destruction of the lunate occurred, necessitating excision and scapho-capitate arthrodesis. Although rare, aneurysmal b one cysts should be included in the differential diagnosis and ruled o ut prior to embarking on a course of treatment.