Pulmonary zygomycosis after allogeneic bone marrow transplantation.

The Zygomycetes are uncommon human pathogens. They cause illness in some patients who are immunosuppressed and can present as any of several syndromes, including rhinocerebral, pulmonary, gastrointestinal, or cutaneous disease, or as disseminated infection. Pulmonary zygomycosis can occur in any of several patterns and can mimic more common pneumonic processes. This mimicry, as well as the rarity of the disease, may delay diagnosis. We present a case of pulmonary zygomycosis that occurred in a patient who was a bone marrow transplant recipient. The case illustrates several of the common features of the disease in this patient group.