[An autopsy case of lethal midline granuloma that terminated in an intracranial hemorrhage]

Reported is an autopsy case of a lethal midline granuloma (LMG) that originally had been manifested as chronic sinusitis and that terminated in intracranial hemorrhage. A 30-year-old woman developed a necrosis of the nasal cavity while being treated for chronic sinusitis for approximately four months. She subsequently died of an intracranial hemorrhage, and an autopsy revealed a necrosis that had progressed from the nasal cavity to the frontal base of the brain, and an infiltration of atypical cells that had an immunoreactivity to the T-cell antigens was observed. Recent studies have strongly suggested the possibility that some cases of an LMG, if not all, may be identical to a T-cell lymphoma. Our case is described and this disease is discussed.