title: Possible confusion of Aspergillus fumigatus and Pneumocystis carinii.
mesh_terms: D000818:Animals; D001232:Aspergillus fumigatus / Q000166:cytology*; D003951:Diagnostic Errors; D006801:Humans; D011010:Pneumocystis / Q000166:cytology*; D013194:Staining and Labeling