The lesion shown (Fig. 62-6) was found on a 32-year-old male on a routine chest film required for his employment. Which of the following is/are true?

a. The stippled calcification and intact cortex of the rib are characteristic of osteochondroma

Osteochondroma is the most common benign rib tumor and has a 3:1 male incidence. The stippled calcification and intact rib cortex are characteristic for this lesion in contrast to the bone destruction of Ewing sarcoma and combined bone destruction and “sunburst” calcification of osteogenic sarcoma. For both Ewing and osteogenic sarcoma, multimodality therapy using preoperative chemotherapy followed by resection yields better results than with radiation therapy. Osteochondromas in prepubertal children can be observed unless they become painful or enlarged, but are routinely resected in adults.