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1.
Rev. argent. microbiol ; 52(3): 91-100, Sept. 2020. graf
Article in Spanish | LILACS | ID: biblio-1340908

ABSTRACT

Resumen El género Exserohilum corresponde a hongos dematiáceos, la mayoría fitopatógenos, saprobios, de los cuales solo tres especies serían patógenas para el hombre: Exserohilum rostratum, Exserohilum longirostratum y Exserohilum mcginnisii. Se han reportado infecciones localizadas y sistémicas causadas por estos agentes, tanto en pacientes inmunocompetentes como inmunosuprimidos. Se presenta un caso de infección cutánea por E. rostratum en un paciente pediátrico con inmunocompromiso.


Abstract The genus Exserohilum consists of dematiaceous or darkly pigmented fungi. Most of the species included in this genus are phytopathogens, saprobes and only three of these species would be pathogenic to humans: Exserohilum rostratum, Exserohilum longirostratum and Exserohilum mcginnisii. Localized and systemic infections have been reported both in immunocompetent and immunosuppressed patients. A clinical case of cutaneous infection by E. rostratum in an immunocompromised pediatric patient is presented in this study.


Subject(s)
Child , Humans , Mitosporic Fungi , Precursor Cell Lymphoblastic Leukemia-Lymphoma , Phaeohyphomycosis , Ascomycota , Bone Marrow Transplantation , Precursor Cell Lymphoblastic Leukemia-Lymphoma/complications , Precursor Cell Lymphoblastic Leukemia-Lymphoma/therapy
2.
Rev. chil. infectol ; 37(1): 77-81, feb. 2020. graf
Article in Spanish | LILACS | ID: biblio-1092725

ABSTRACT

Resumen Los episodios de neutropenia febril son cuadros graves, que requieren un estudio etiológico exhaustivo y un inicio rápido de antimicrobianos. Dentro de los posibles microorganismos causales se encuentran los de origen fúngico, los que, dependiendo de su grado de invasión tisular, pueden llegar a presentar una alta mortalidad. Presentamos el caso de un niño con una leucemia mieloide aguda, que tras su quimioterapia de inducción, presentó un episodio de neutropenia febril, con una infección rino-sinusal por Exserohilum rostratum, hongo filamentoso que raramente se asocia a cuadros patológicos. Se inició rápidamente terapia antifúngica, lo cual, asociado a un aseo quirúrgico precoz, lograron una respuesta clínica favorable, sin complicaciones. Luego del seguimiento, y tras recibir profilaxis secundaria durante los episodios de neutropenia, no ha vuelto a presentar nuevas lesiones ni compromiso rino-sinusal.


Abstract The episodes of febrile neutropenia are severe cases that require an exhaustive etiological study and a quick start of antimicrobial agents. Within the possible microorganisms, fungal origins are also found, and depending on its tissue invasion, they can reach a high mortality rate. A case of a pediatric patient who suffered from acute myeloid leukemia is reported, and after his induction chemotherapy, the patient showed an episode of febrile neutropenia, which matches a rhinosinusal infection caused by Exserohilum rostratum, a filamentous fungi that is uncommonly associated with pathological cases. An antifungal therapy and an early surgical treatment were started, which lead to a positive response, without complications to the patient. After the monitoring and receiving secondary prophylaxis during the episodes of neutropenia, the patient hasn't presented new injuries nor rhinosinusal damage.


Subject(s)
Humans , Child , Ascomycota/isolation & purification , Sinusitis/complications , Sinusitis/microbiology , Sinusitis/drug therapy , Leukemia, Myeloid, Acute/complications , Mycoses/complications , Mycoses/drug therapy , Antifungal Agents/therapeutic use , Treatment Outcome , Neutropenia/etiology
3.
Arch. argent. pediatr ; 116(4): 594-598, ago. 2018. ilus, tab
Article in Spanish | LILACS, BINACIS | ID: biblio-950049

ABSTRACT

La infección fúngica invasora ha aumentado en frecuencia a lo largo de la última década, y la sinusitis fúngica es cada vez más habitual. Los hongos del género Exserohilum (familia Pleosporaceae, orden Pleosporales) son filamentosos y dematiáceos, de localización ubicua. Se trata de patógenos emergentes, que producen, en la mayoría de los casos, infecciones sistémicas que afectan, principalmente, a los senos paranasales y los pulmones. Son más frecuentes en pacientes inmunosuprimidos, aunque pueden presentarse en pacientes inmunocompetentes. El tratamiento de estas infecciones comprende el tratamiento antifúngico, resección quirúrgica y restitución de la inmunidad. Se presenta el caso de una paciente con recaída medular de leucemia linfoblástica aguda con sinusitis fúngica invasiva por Exserohilum rostratum.


Invasive fungal infection has increased in frequency over the last decade, with fungal sinusitis becoming more frequent. The fungi of the genus Exserohilum (family Pleosporaceae, order Pleosporales) are filamentous and dematiaceous of ubiquitous location. It is an emerging pathogen, which in most cases produces a systemic infection that mainly affects the paranasal sinuses and lungs. It is more common in immunosuppressed patients, although it may occur in immunocompetent patients. The treatment is based on three pillars: antifungal treatment, surgical debridement and restitution of immunity. We present the case of a patient with medullary relapse of acute lymphoblastic leukemia with invasive fungal sinusitis by Exserohilum rostratum.


Subject(s)
Humans , Female , Child, Preschool , Ascomycota/isolation & purification , Sinusitis/diagnosis , Precursor Cell Lymphoblastic Leukemia-Lymphoma/pathology , Invasive Fungal Infections/diagnosis , Recurrence , Sinusitis/microbiology , Sinusitis/therapy , Acute Disease , Debridement/methods , Invasive Fungal Infections/microbiology , Invasive Fungal Infections/therapy , Antifungal Agents/therapeutic use
4.
Indian J Pathol Microbiol ; 2012 Apr-Jun 55(2): 248-249
Article in English | IMSEAR | ID: sea-142235

ABSTRACT

We report a case of keratomycosis caused by Exserohilum rostratum. A 46-year-old farmer presented with history of pain, watery discharge and redness of the right eye for the past 2 weeks following trauma with vegetable matter. On ocular examination, a central corneal ulcer of about 8 mm with a greyish-white slough, feathery edges and diffuse corneal edema was seen in the right eye. KOH examination of corneal scrapings revealed thick, brown, branched, septate hyphae. Culture of corneal scrapings on Sabouraud dextrose agar showed velvety greenish-black colony with a black pigment on the reverse. The culture was identified as E. rostratum on the basis of microscopic morphology. The patient responded well to treatment with topical natamycin and oral itraconazole.


Subject(s)
Antifungal Agents/administration & dosage , Ascomycota/cytology , Ascomycota/isolation & purification , Culture Media/chemistry , Eye Infections, Fungal/diagnosis , Eye Infections, Fungal/drug therapy , Eye Infections, Fungal/microbiology , Eye Infections, Fungal/pathology , Humans , Itraconazole/administration & dosage , Keratitis/diagnosis , Keratitis/drug therapy , Keratitis/microbiology , Keratitis/pathology , Male , Microscopy , Middle Aged , Mycology/methods , Natamycin/administration & dosage , Treatment Outcome , Wounds and Injuries/complications
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