53. MULTIPLE CHONDROMAS IN OLLIER’S DISEASE. The left hand of this 27-year-old man contains multiple deforming chondromas.
54. MULTIPLE CHONDROMAS. The tumors involve the bones of the second and third rays with sparing of the joint spaces.
55. MAFFUCCI’S SYNDROME. Left – multiple benign cartilage tumors involve the metacarpals and phalanges of the first to third digits. Soft tissue swelling and masses with calcified phleboliths are compatible with soft tissue hemangiomas. Right – Coronal short tau inversion recovery image shows multiple high signal intensity lesions in phalanges of the 2 nd and 3 rd digits and 2 nd metacarpal consitent with enchondromas. The small soft tissue mass in the 2 nd digit and serpigenous vessels in the 2 nd and 3 rd digits are compatible with hemangiomas.
65. This chondroblastoma arising from the temporal bone contains areas of spindled mononuclear cells, hemosiderin deposition , and multinucleated giant cells.
76. The tumor arose in the sternum. It has a characteristic gray-blue appearance, is lobulated and has a chalky-white calcific deposits. Cartilage tumors at this site are almost always malignant.