Which bone tumor is most common in the phalanges?

Which bone tumor is most common in the phalanges?

• A. Enchondroma
• B. Osteosarcoma
• C. Ewing sarcoma
• D. Giant cell tumor

Answer: (A)

Enchondroma is the most common bone tumor in the phalanges because the small hand bones are favored sites for benign cartilaginous tumors that grow within the medullary cavity. These cartilaginous lesions typically present as a central, lucent intramedullary area that may show ring-and-arc calcifications and thinning of the cortex without aggressive periosteal reaction. They’re often discovered incidentally or after a low-energy fracture. Osteosarcoma, while the most common malignant bone tumor overall, is rare in the hand and usually presents with aggressive features, rapid swelling, and a more pronounced periosteal reaction. Ewing sarcoma can occur in the hand but is uncommon there and tends to involve diaphyses of long bones with systemic symptoms. Giant cell tumors occur in skeletally mature individuals, are typically epiphyseal and more common around the knee, and are rare in the phalanges.

Enchondroma is the most common bone tumor in the phalanges because the small hand bones are favored sites for benign cartilaginous tumors that grow within the medullary cavity. These cartilaginous lesions typically present as a central, lucent intramedullary area that may show ring-and-arc calcifications and thinning of the cortex without aggressive periosteal reaction. They’re often discovered incidentally or after a low-energy fracture.

Osteosarcoma, while the most common malignant bone tumor overall, is rare in the hand and usually presents with aggressive features, rapid swelling, and a more pronounced periosteal reaction. Ewing sarcoma can occur in the hand but is uncommon there and tends to involve diaphyses of long bones with systemic symptoms. Giant cell tumors occur in skeletally mature individuals, are typically epiphyseal and more common around the knee, and are rare in the phalanges.