Rapid pulmonary dissemination in mycosis fungoides simulating pneumonia. A case report and review of the literature.

Mycosis fungoides is a neoplastic disease with extranodal dissemination most frequently to the lung. The roentgenographic and clinical manifestations in these patients may simulate pneumonia and delay appropriate treatment. Disseminated disease is thought to occur in the setting of involvement of the peripheral blood with the neoplastic cells. A case of rapid pulmonary involvement with mycosis fungoides which simulated pneumonia is presented in which there was no peripheral blood manifestation of the disease.