Paraneoplastic rhinophyma and the Leser-Trélat sign.

A case of the Leser-Trélat sign associated with an underlying malignant haemangiopericytoma is described. In addition, the patient had profound hypoglycaemia and a rhinophyma-like nasal swelling which rapidly resolved post-operatively. The tumour appeared to be secreting a factor(s) which cross-reacted with both insulin receptors to induce hypoglycaemia and epidermal growth factor receptors inducing a profusion of eruptive seborrhoeic warts. It aslo had marked sebotrophic activity. The association of the Leser-Trélat sign with malignant haemangiopericytoma has not previously been described.