Dermatomiositis amiopática asociada a recurrencia de cáncer de mama

The term «amyopathic dermatomyositis», or dermatomyositis «sine myositis» is used to describe those patients who present with the skin manifestations typical of dermatomyositis, but with no evidence of inflammatory myopathy. Amyopathic dermatomyositis may be associated with an underlying neoplasm, the same as with classic dermatomyositis. We present the case of a 59-year-old female patient, with cutaneous findings typical of dermatomyositis, with no proximal muscle weakness and with normal serum muscle enzymes, which stayed in a normal range throughout the later follow-up period, although the electromyogram performed six months later show ed alterations with a myopathic pattern. These skin symptoms rais ed the suspicion of an occult neoplasm, and a recurrence of the patient's breast cancer, apparently inactive for many years, was finally found. The association of amyopathic derma tomyositis with a recurrence of breast cancer is exceptional.