http://www.appliedradiology.com RSS Feed on Applied Radiologyhttp://www.appliedradiology.com//Issues/2003/10/Cases/Giant-cell-tumor-of-the-tendon-sheath.aspxA 63-year-old man presented with a long-standing soft-tissue mass at the volar aspect of his right proximal interphalangeal (PIP) joint that had recently become increasingly irritating, but without significant increase in size. Physical examination revealed a firm, fixed subcutaneous nodule, causing limited flexion at the right fourth PIP joint, but without loss of sensory or overall function of the hand. There was no significant tenderness, and no other nodules were identified. A retinaculum cyst was suspected and, following radiography (Figure 1), a magnetic resonance (MR) imaging study was obtained for further evaluation (Figure 2). Figures 1 through 4 are images obtained prior to histologic confirmation.Tuesday, 01 Feb 2005 13:47:46 GMT