Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose
Ten cases of cryptococcosis due to unusual microscopic forms of Cryptococcus sp. observed over a twenty-eight year period (1981-2009) are presented. The most important clinicopathological and laboratory data are tabulated. The uncommon forms of cryptococcal cells given are: structures resembling ger...
Published in: | Revista do Instituto de Medicina Tropical de São Paulo |
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Universidade de São Paulo (USP)
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ftdoajarticles:oai:doaj.org/article:86150d24531c4e17aec3fd65fe43aedf 2024-09-09T19:27:29+00:00 Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose Alexandra Flávia Gazzoni Flávio de Mattos Oliveira Emily Ferreira Salles Emilio Mayayo Josep Guarro Javier Capilla Luiz Carlos Severo 2010-06-01T00:00:00Z https://doi.org/10.1590/S0036-46652010000300006 https://doaj.org/article/86150d24531c4e17aec3fd65fe43aedf EN eng Universidade de São Paulo (USP) http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652010000300006 https://doaj.org/toc/0036-4665 https://doaj.org/toc/1678-9946 doi:10.1590/S0036-46652010000300006 0036-4665 1678-9946 https://doaj.org/article/86150d24531c4e17aec3fd65fe43aedf Revista do Instituto de Medicina Tropical de São Paulo, Vol 52, Iss 3, Pp 145-149 (2010) Cryptococcosis Pseudohyphae Chains of budding yeasts Germ tube-like structures Nonencapsulated yeast-like organisms Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2010 ftdoajarticles https://doi.org/10.1590/S0036-46652010000300006 2024-08-05T17:49:30Z Ten cases of cryptococcosis due to unusual microscopic forms of Cryptococcus sp. observed over a twenty-eight year period (1981-2009) are presented. The most important clinicopathological and laboratory data are tabulated. The uncommon forms of cryptococcal cells given are: structures resembling germ tube (one case), chains of budding yeasts (one case), pseudohyphae (two cases) and nonencapsulated yeast-like organisms (eight cases). The diagnosis was based on the histopathological findings. The causative organism was isolated and identified in seven cases; five were due to C. neoformans, and two to C. gattii. In addition, the importance of using staining histochemical techniques - Grocott's silver stain (GMS), Mayer's mucicarmine stain (MM) and Fontana-Masson stain (FM) - in the diagnosis of cryptococcosis is argued. A criptococose é a mais comum infecção fúngica oportunística observada em pacientes com síndrome da imunodeficiência adquirida (AIDS). Relatamos 13 casos da infecção baseados no diagnóstico histopatológico, sorológico e cultivo. Foram analisadas: a epidemiologia, as técnicas histoquímicas básicas de hematoxilina-eosina (HE) e coloração pela prata (GMS), bem como as técnicas histoquímicas especiais de mucicarmim de Mayer (MM) e Fontana-Masson (FM), o teste do antígeno criptocóccico (CrAg) e o isolamento em cultivos em ágar-Sabouraud (SAB), ágar infusão de cérebro-coração (BHI) e meio com canavanina azul de bromotimol (CGB). Em quatro casos, resultados tintoriais insatisfatórios pela coloração de MM associados a títulos negativos pelo teste do CrAg, a coloração de FM confirmou a infecção pelo Cryptococcus deficiente de cápsula. Oito isolados foram identificados: seis casos apresentaram a infecção por Cryptococcus neoformans e dois casos apresentaram a infecção por Cryptococcus gattii. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Fontana ENVELOPE(-60.586,-60.586,-62.996,-62.996) Revista do Instituto de Medicina Tropical de São Paulo 52 3 145 149 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Cryptococcosis Pseudohyphae Chains of budding yeasts Germ tube-like structures Nonencapsulated yeast-like organisms Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
spellingShingle |
Cryptococcosis Pseudohyphae Chains of budding yeasts Germ tube-like structures Nonencapsulated yeast-like organisms Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Alexandra Flávia Gazzoni Flávio de Mattos Oliveira Emily Ferreira Salles Emilio Mayayo Josep Guarro Javier Capilla Luiz Carlos Severo Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose |
topic_facet |
Cryptococcosis Pseudohyphae Chains of budding yeasts Germ tube-like structures Nonencapsulated yeast-like organisms Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Ten cases of cryptococcosis due to unusual microscopic forms of Cryptococcus sp. observed over a twenty-eight year period (1981-2009) are presented. The most important clinicopathological and laboratory data are tabulated. The uncommon forms of cryptococcal cells given are: structures resembling germ tube (one case), chains of budding yeasts (one case), pseudohyphae (two cases) and nonencapsulated yeast-like organisms (eight cases). The diagnosis was based on the histopathological findings. The causative organism was isolated and identified in seven cases; five were due to C. neoformans, and two to C. gattii. In addition, the importance of using staining histochemical techniques - Grocott's silver stain (GMS), Mayer's mucicarmine stain (MM) and Fontana-Masson stain (FM) - in the diagnosis of cryptococcosis is argued. A criptococose é a mais comum infecção fúngica oportunística observada em pacientes com síndrome da imunodeficiência adquirida (AIDS). Relatamos 13 casos da infecção baseados no diagnóstico histopatológico, sorológico e cultivo. Foram analisadas: a epidemiologia, as técnicas histoquímicas básicas de hematoxilina-eosina (HE) e coloração pela prata (GMS), bem como as técnicas histoquímicas especiais de mucicarmim de Mayer (MM) e Fontana-Masson (FM), o teste do antígeno criptocóccico (CrAg) e o isolamento em cultivos em ágar-Sabouraud (SAB), ágar infusão de cérebro-coração (BHI) e meio com canavanina azul de bromotimol (CGB). Em quatro casos, resultados tintoriais insatisfatórios pela coloração de MM associados a títulos negativos pelo teste do CrAg, a coloração de FM confirmou a infecção pelo Cryptococcus deficiente de cápsula. Oito isolados foram identificados: seis casos apresentaram a infecção por Cryptococcus neoformans e dois casos apresentaram a infecção por Cryptococcus gattii. |
format |
Article in Journal/Newspaper |
author |
Alexandra Flávia Gazzoni Flávio de Mattos Oliveira Emily Ferreira Salles Emilio Mayayo Josep Guarro Javier Capilla Luiz Carlos Severo |
author_facet |
Alexandra Flávia Gazzoni Flávio de Mattos Oliveira Emily Ferreira Salles Emilio Mayayo Josep Guarro Javier Capilla Luiz Carlos Severo |
author_sort |
Alexandra Flávia Gazzoni |
title |
Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose |
title_short |
Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose |
title_full |
Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose |
title_fullStr |
Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose |
title_full_unstemmed |
Unusual morphologies of Cryptococcus spp. in tissue specimens: report of 10 cases Histopatologia, sorologia e cultivo no diagnóstico da criptococose |
title_sort |
unusual morphologies of cryptococcus spp. in tissue specimens: report of 10 cases histopatologia, sorologia e cultivo no diagnóstico da criptococose |
publisher |
Universidade de São Paulo (USP) |
publishDate |
2010 |
url |
https://doi.org/10.1590/S0036-46652010000300006 https://doaj.org/article/86150d24531c4e17aec3fd65fe43aedf |
long_lat |
ENVELOPE(-60.586,-60.586,-62.996,-62.996) |
geographic |
Arctic Fontana |
geographic_facet |
Arctic Fontana |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista do Instituto de Medicina Tropical de São Paulo, Vol 52, Iss 3, Pp 145-149 (2010) |
op_relation |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0036-46652010000300006 https://doaj.org/toc/0036-4665 https://doaj.org/toc/1678-9946 doi:10.1590/S0036-46652010000300006 0036-4665 1678-9946 https://doaj.org/article/86150d24531c4e17aec3fd65fe43aedf |
op_doi |
https://doi.org/10.1590/S0036-46652010000300006 |
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Revista do Instituto de Medicina Tropical de São Paulo |
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52 |
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3 |
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145 |
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