DERMATOMYOSITIS

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Abstract
DERMATOMYOSITIS, although predominantly a disease of the skin and skeletal muscle, may affect many other organs. It may, therefore, be regarded as a systemic disease. In this paper the observations at autopsy in 3 patients with dermatomyositis will be reviewed and emphasis will be placed on the lesions which were found in organs other than the skin and skeletal muscles. Pathologic changes attributable to dermatomyositis were observed in the heart muscle, the subcutaneous and visceral fat and the intestines. The resemblance of the histologic changes in dermatomyositis to those of lupus erythematosus and scleroderma will be commented on. REPORT OF CASES Case 1.— (This case was presented at one of the Weekly Clinicopathological Exercises of the Massachusetts General Hospital.1) The patient, a 54 year old nurse, began to feel weak in September 1942. In December an erythematous eruption developed on the back of the neck and at the base of

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