Which radiographic finding corresponds to cartilaginous tumors like chondrosarcoma?

Which radiographic finding corresponds to cartilaginous tumors like chondrosarcoma?

• A. Destruction of cortex with diffuse mottled calcifications
• B. Sunburst pattern
• C. Onion skin periosteal reaction
• D. Lamellated sclerosis

Answer: (A)

Cartilaginous tumors like chondrosarcoma characteristically have calcified cartilage matrix within the lesion. On radiographs this appears as calcifications inside the tumor, often described as rings-and-arcs or popcorn-type calcifications. When malignant, these lesions also tend to disrupt and destroy the adjacent cortex as they grow. So a finding that shows cortical destruction together with intralesional calcifications best fits a cartilaginous tumor. The other patterns point to different diagnoses: a sunburst pattern is classic for osteosarcoma due to aggressive periosteal new bone formation; onion-skin periosteal reaction is typical of Ewing sarcoma; and lamellated sclerosis is not the hallmark pattern for cartilaginous tumors.

Cartilaginous tumors like chondrosarcoma characteristically have calcified cartilage matrix within the lesion. On radiographs this appears as calcifications inside the tumor, often described as rings-and-arcs or popcorn-type calcifications. When malignant, these lesions also tend to disrupt and destroy the adjacent cortex as they grow. So a finding that shows cortical destruction together with intralesional calcifications best fits a cartilaginous tumor.

The other patterns point to different diagnoses: a sunburst pattern is classic for osteosarcoma due to aggressive periosteal new bone formation; onion-skin periosteal reaction is typical of Ewing sarcoma; and lamellated sclerosis is not the hallmark pattern for cartilaginous tumors.