Solitary Plasmacytoma of the Calcaneum: A Case Report.

Solitary Plasmacytoma is characterized by a mass of neoplastic monoclonal plasma cells in either bone or soft tissue without evidence of systemic disease attributing to myeloma. Solitary bony plasmacytoma commonly presents in the axial skeleton. The occurrence of solitary bony plasmacytoma in young individuals is exceedingly rare but has been reported sporadically. We report a case of Solitary bony plasmacytoma involving the calcaneum (appendicular skeleton) in a 26-year-old male with a prior history of trauma at the same site. To our knowledge, this is one of the few cases of solitary bony plasmacytoma in the calcaneum being reported. Our patient presents with some unusual features like the unusual site of the lesion (calcaneum), presentation at a young age and the disease being symptomatic following trauma. Keywords: age groups; calcaneus; plasmacytoma; trauma.