• Nenhum resultado encontrado

Rev. Soc. Bras. Med. Trop. vol.44 número1

N/A
N/A
Protected

Academic year: 2018

Share "Rev. Soc. Bras. Med. Trop. vol.44 número1"

Copied!
1
0
0

Texto

(1)

127

Revista da Sociedade Brasileira de Medicina Tropical 44(1):127, jan-fev, 2011

1. Leishmaniasis Surveillance Laboratory, Evandro Chagas Clinical Research Institute, Oswaldo Cruz Foundation, Rio de Janeiro, RJ, Brazil.

Address to: Dra. Cintia Xavier de Mello. Laboratório em Vigilância em Leishmanioses/IPEC/FIOCRUZ. Av. Brasil 4365, Manguinhos, 21040-900 Rio de Janeiro, RJ.

Telefax: 55 21 3865-9541 e-mail: cintia.mello@ipec.iocruz.br

Received in 23/07/2010

Accepted in 06/10/2010

Images in Infectious Diseases/Imagens em DIP

Can yeast-like form of

Sporothrix schenckii

confuse the direct

parasitological diagnosis of American cutaneous leishmaniasis?

Estruturas leveduriformes de

Sporothrix schenckii

podem gerar confusão no diagnóstico

parasitológico direto da leishmaniose tegumentar americana?

Cintia Xavier de Mello

1

, Armando de Oliveira Schubach

1

and Maria de Fátima Madeira

1

A 44 year-old HIV-positive male patient with ulcerated lesions in the palate, third let toe and right thigh (Figure A) was treated at the Leishmaniasis Clinic of the Evandro Chagas Clinical Research Institute, Oswaldo Cruz Foundation (IPEC/FIOCRUZ) for diagnostic investigation. A biopsy of the thigh and palate lesion was performed for culture isolation of Leishmania, fungi and mycobacteria, while for direct examination, scariication and imprint slides were prepared with material from the thigh lesion. Following ixation by methanol and Giemsa staining, scariication and imprint slides of the thigh lesion were examined under a light microscope with an immersion objective (x 1.000). Analysis revealed the presence of numerous rounded and ellipsoid structures located inside and outside macrophages (Figure B). Although these structures are similar to amastigotes in size and shape, they presented no kinetoplast, which is a key feature for Leishmania

parasite conirmation. he mycological culture of fragments of the palate and thigh lesion was positive for Sporothrix schenckii.

In the State of Rio de Janeiro, both sporotrichosis and American tegumentary leishmaniasis (ATL) occur in overlapping areas. his afects diferent animal species, including man, and is a confounding factor in the diagnosis (clinical and laboratory) of both diseases. In the present study, probably due to the HIV infection, numerous structures of yeast-like form of S. schenckii were observed. he presence of such structures in the direct examination is a rare event; however, they indicate the need for skilled professionals and thorough analyses of direct examinations, taking into account the morphological features speciic to the parasite, in order to adequately diagnose the case.

Paciente do sexo masculino, 44 anos, HIV positivo, apresentando lesões ulceradas no palato, terceiro pododáctilo esquerdo e coxa direita (Figura A), foi atendido no Ambulatório de Leishmanioses, do Instituto de Pesquisas Evandro Chagas, da Fundação Oswaldo Cruz (IPEC/ FIOCRUZ), para investigação diagnóstica. Foi realizada biópsia da lesão da coxa e palato para isolamento em cultura de Leishmania, fungos, micobactérias e para o exame direto, foram preparadas lâminas de imprint

e escariicação com material obtido da lesão da coxa. Após ixação pelo metanol e coloração pelo Giemsa, as lâminas de escariicação e imprint

da lesão da coxa foram examinadas em microscópio óptico com objetiva de imersão (x 1.000). O exame dessas lâminas revelou a presença de inúmeras estruturas elipsóides e arredondadas, localizadas no interior e exterior de macrófagos (Figura B). Embora semelhantes a formas amastigotas, em tamanho e formato, tais estruturas não apresentavam cinetoplasto, característica fundamental para conirmação de parasitas do gênero Leishmania. A cultura micológica de fragmentos de lesão do palato e coxa demonstrou a presença de Sporothrix schenckii.

No Estado do Rio de Janeiro, tanto a esporotricose como a leishmaniose tegumentar americana (LTA) ocorrem em áreas de sobreposição, afetando diferentes espécies animais, incluindo o homem, constituindo fator de confusão diagnóstica (clínica e laboratorial) entre ambas as doenças. Embora o encontro de leveduras de S. schenckii no exame direto seja um fato raro, as inúmeras estruturas visualizadas neste relato podem ser decorrentes da infecção pelo HIV. Entretanto, alertam para a necessidade de pessoal qualiicado e de leituras cuidadosas nos exames diretos, observando-se características morfológicas especíicas do parasita, a im de concluir adequadamente o caso.

REFERENCES

1. Barros MBL, Schubach TMP, Galhardo MCG, Schubach AO, Monteiro PCF, Reis RS, et al. Sporotrichosis: an Emergent Zoonosis in Rio de Janeiro. Mem Inst Oswaldo Cruz 2001; 96:777-779.

2. Neto RJP, Machado AA, Castro G, Quaglio ASS, Martinez R. Esporotricose cutânea disseminada como manifestação inicial da síndrome da imunodeiciência adquirida - relato de caso. Rev Soc Bras Med Trop 1999; 32:57-61.

3. Schubach A, Barros MB, Wanke B. Epidemic sporotrichosis. Curr Opin Infect Dis 2008; 21:129-133.

Referências

Documentos relacionados

he study prospectively evaluated 47 elderly individuals from a group of 384 randomly assigned for acute respiratory viral infections (cold or lu) and assessed the occurrence of

he association of luconazole with SMZ/TMP appears to be a viable option in the treatment of patients with NPCM and should at least be considered in cases where other

Conclusions: Oral histoplasmosis is closely associated with immunosuppression status, especially in patients presenting AIDS; moreover, in many cases, OH is the irst sign of

TABLE 3 - Infection rate per 1,000 (expressed as maximum likelihood estimation with 95%CI) of the various dengue virus serotypes in Aedes aegypti, Belo Horizonte, 2007.. he second

Ak: amikacin, Am: ampicillin, SAM: ampicillin-Subactan, Azt: aztreonan, Cpe: cefepime, Ct: cefotaxime, Cfx: cefoxitin, Caz: cetazidime, Cf: cephalothin, Gm: gentamicin,

he patient presented with a three-day history of neurological disease, brain lesions without mass efect or contrast uptake and a slightly increased protein concentration

he clinical features of scurvy in this patient with AIDS included asthenia, anorexia, weight loss, gingival hypertrophy, coiled, corkscrew-like hair, and

A 44 year-old HIV-positive male patient with ulcerated lesions in the palate, third let toe and right thigh (Figure A) was treated at the Leishmaniasis Clinic of the Evandro