title: [Histopathological techniques for diagnosing cryptococcosis due to capsule-deficient Cryptococcus: case report].
abstract: A case of cryptococcosis due to capsule-deficient Cryptococcus is presented, in which culturing of the clinical specimen and tests for capsular antigen in cerebrospinal fluid and serum were negative. The histopathological techniques evaluated were hematoxylin-eosin, Grocott methenamine silver, Mayers mucicarmine and Fontana-Masson. The diagnosis of cryptococcosis due to capsule-deficient Cryptococcus was confirmed by means of the Fontana-Masson technique and by direct immunofluorescence. The potential of the histochemical techniques is discussed.
authors: Universidade Federal do Rio Grande do Sul, Porto Alegre, RS.
authors: Alexandra Flávia
authors: AF
authors: Gazzoni
authors: Karla Lais
authors: KL
authors: Pegas
authors: Luiz Carlos
authors: LC
authors: Severo
mesh_terms: D000328:Adult; D003453:Cryptococcosis / Q000473:pathology*; D005260:Female; D006801:Humans; D008172:Lung Diseases, Fungal / Q000473:pathology*; D013194:Staining and Labeling / Q000379:methods*