Images of an extra-articular tenosynovial chondromatosis of the index finger in a 65-year-old female (the same patient in Fig. (1)). Low-magnification views of H&E stained histology sections showing multiple cartilaginous nodules (a and b). H&E stained histology sections of cartilaginous cells with chondroid stroma (c) and cartilaginous nodules lined by synovium (d). Resected specimens of extraosseous (top) and intraosseous (bottom) origin (e). Original magnifications of panels: a and b, x40; c, x100; d, x200.