title: Opportunistic infections in neoplastic diseases.
mesh_terms: D001228:Aspergillosis / Q000209:etiology; D002177:Candidiasis / Q000209:etiology; D003453:Cryptococcosis / Q000209:etiology; D003586:Cytomegalovirus Infections / Q000209:etiology; D006801:Humans; D009091:Mucormycosis / Q000209:etiology; D009181:Mycoses / Q000150:complications*; D009369:Neoplasms / Q000150:complications*; D009617:Nocardia Infections / Q000209:etiology; D011020:Pneumonia, Pneumocystis / Q000209:etiology; D014123:Toxoplasmosis / Q000209:etiology