Abstract
We describe a 73-year-old gentleman who was referred to haematology for management of myeloma following the discovery of a small plasmacytoma of the tonsil and an osteolytic lesion in the head of his left humerus. Investigation for myeloma was negative and the lytic lesions were explained by dysbaric osteonecrosis rather than myelomatous bone involvement. He had worked on the construction of the Clyde tunnel between 1958 and 1963 and had been subjected to repeat compression/decompression cycles. He was diagnosed with a solitary extramedullary plasmacytoma of the nasopharynx, which responded well to local radiotherapy.
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