[Midline malignant reticulosis (so-called lethal midline granuloma) (author's transl)].

Case report about a 30-year old man with midline malignant reticulosis. Diagnosis was not successful by means of biopsy but given by microscopic examination of autopsy material afterwards. So-called lethal midline granuloma is a clinical term. After excluding specific infections, carcinomas or other rare diseases, it is caused by midline malignant reticulosis or by Wegener's granulomatosis. Frequently diagnosis is made by the pathologist at autopsy.