<prompt> Differential diagnosis of a lesion, histologically resembling giant cell tumour in the small bones of the handfeet, include all of the following except: March 2005FibrosarcomaEnchondromaHyperpahyroidismAneurysmal bone cyst  <response>: Ans. A: Fibrosarcoma Lytic bony lesions: Differential Diagnosis Mnemonic FOGMACHINES: F Fibrous Dysplasia 0 Osteoblastoma G Giant Cell Tumour M Metastasis Mveloma A Aneurysmal Bone Cyst C Chondroblastoma H Hyperparathyroidism brown tumours Hemangioma I Infection N Non-ossifying Fibroma E Eosinophilic Granuloma Enchondroma S Solitary Bone Cyst 