Chondroblastoma of scapula with aneurysmal bone cyst, unusual presentation at unusual location

Chondroblastoma is a very rare tumour only 16% of cases are found in flat bones, pelvic bones are the most frequently involved. Chondroblastoma of scapula is extremely rare and around 20% chondroblastoma associated with ABC. A 65 years female presented with pain and limitation of right shoulder mobility from two months. Physical examination shows a tumor at the inferior angle of right scapula. On FNAC given as giant cell tumour with differential diagnosis ABC/Chondroblastoma. Excised tumour on histopathological examination confirmed chondroblastoma with areas of ABC. The clinical, radiological and histopathogical findings are necessary for evaluation of chondroblastoma. Complete excision, curettage of the tumour with a regular follow-up for any local recurrence or metastasis is the key to successful management of such case. The histopathological diagnosis should not be stopped at chondroblastoma a careful search for associated ABC is essential, as most cases of chondroblastoma associated with this lesion.