A variant of Giant cell tumor is?: (A) Ossifying fibroma, (B) Non ossifying fibroma, (C) Osteosarcoma, (D) Chondroblastoma
Answer is D. GCT is adult counterpart of chondroblastoma. Chondroblastoma is an epiphysis tumor which occurs in the 2nd decade (10-20 years), while GCT is an epiphysis tumor which occurs in adults (20 - 40 years).