Which tumor is most commonly found in the phalange bones?

• A. Osteochondroma
• B. Enchondroma
• C. Giant cell tumor
• D. Osteosarcoma

Answer: (B)

Enchondroma is the most commonly found tumor in the phalange bones, and this reflects how the small bones of the hand are particularly prone to cartilaginous lesions. These tumors arise from residual enchondral cartilage within the medullary space of the bone, which is why they frequently develop in the tiny, cartilaginous phalanges. They are typically benign and slow-growing, often presenting as a painless swelling or a fracture after minor trauma.

Radiographically, an enchondroma in the phalanges usually appears as a well-defined intramedullary lucent lesion and may show calcifications within the cartilage, sometimes with mild cortical thinning or expansion but without aggressive periosteal reaction.

Other tumors listed tend to favor different bones or ages: osteochondroma usually arises from the metaphyses of long bones and projects outward; giant cell tumor tends to involve the epiphyses of long bones in skeletally mature individuals; osteosarcoma most often affects the metaphyses of long bones in adolescents. These patterns make enchondroma the typical phalangeal tumor.