Open quiz: Case report 806

Abstract

Fig. 1 A-C. Chronological radiographic sequences of the fight fifth metacarpal bone during the different stages of disease. A lyric and expansile lesion within the medullary canal is seen (A, C). After treatment, a sclerosing reparative pattern is present (B) of fracture or cortical interruption. A subchondral location was noted. Enchondroma was the clinical and radiographic diagnosis. Extensive curettage of the medullary canal was performed, after which the cavity was packed with a cancellous bone graft obtained f rom the right iliac crest. During the curettage a thick fluidlike material was observed, and the bone fragments obtained were submitted for histological analysis. A radiological study performed 3 months later revealed a trabecular, sclerosing reparative pat tern (Fig. 1 B). Three years later, in January 1992, a new roentgenogram disclosed an expansile lytic lesion in the same anatomical zone, very similar radiographically to the original lesion (Fig. 1 C). Curettage was performed at that time. Periodic skeletal surveys were unremarkable except for the findings in the hand.