Paraproteins and plasma cell dyscrasias.

Serum protein electrophoresis done on 1100 patients with various diseases in one year demonstrated M-band in 31 patients. Most (87%) had the classical features of plasma cell dyscrasia (PCD), however a few had unusual presentations which are highlighted. A 22-year-old male operated for a massive tumour of the scapula clinically diagnosed as chondrosarcoma revealed plasmacytoma with amyloid on histology. Another case of kala-azar presented with features akin to that of PCD and one case had dual malignancies. Such a high incidence of PCDs with varied picture in a short time is not usually seen in other parts of this country; a fact which may be due to lack of awareness.