Dermatomyositis associated with testicular tumour with elevation of serum lactate dehydrogenase (LDH) isoenzyme-1.

Sir, It is well known that dermatomyositis (DM) is frequently associated with internal malignancy (1 ^ 2). Common malignant neoplasms found in association with DM are breast, lung, ovary, stomach and colon. Among such malignancies, testicular tumour appears to be rare and we found only one published case report of this combination (3). We report here a case of DM associated with a testicular tumour, with elevated serum lactate dehydrogenase (LDH), in particular its isoenzyme-1 (LDH-1).