<prompt> Most common tumor of hand is ?EnchondromaChondroblastomaGiant cell tumourOsteoid osteoma  <response>: .ENCHONDROMA - This is a benign tumour consisting of a lobulated ma s s of cailage encapsulated by fibrous t issue. The intercellular mat r ix may undergo mucoid degeneration. Frequently the fibrous septae dividing Enchondroma Age group : 15-30 years Bones: Small bones of the hand phalanges, metacarpals etc., usually multiple. Site : Diaphysis Others features: Long duration, benign swellings. Swelling is the main complaint. ref:ESSENTIAL OHOPAEDICS,MAHESWARI,ed 3 ,pg no 331 