Extensive Ossification in a Pulmonary Plasmacytoma

Abstract

Extramedullary plasmacytomata form an interest- ing group of tumours, the nature and behaviour of which are still not well understood. The majority of such tumours are situated in the pharynx, upper respiratory tract, and conjunctiva Less frequent sites have been the thyroid, intestine, ovary, and kidney. A study of the litera- ture available to us has revealed that so far 18 cases (Ackerman, 1953 ;