Infección micótica por Cladophialophora bantiana y desarrollo de feohifomicosis cerebral. Revisión sistemática de 58 informes de caso / Fungal infection by Cladophialophora bantiana and development of cerebral phaeohyphomycosis. A systematic review of 58 case reports

Introducción: Cladophialophora bantiana es un hongo filamentoso, denominado hongo dematiáceo por la presencia de melanina. Este hongo tiene importancia clínica por ser neurotrópico y causar feohifomicosis cerebral. Material y métodos. Se analizó la información científica disponible sobre el desarrollo de feohifomicosis cerebral provocada por Cladophialophora bantiana, seleccionando artículos de las bases de PubMed, Scopus y Google Scholar, que describen informes de caso sobre infección micótica de C. bantiana en adultos, considerando el análisis de la sintomatología, el historial clínico y los daños neuroanatómicos de los pacientes, además de considerar la mortalidad de la patología.ResultadosLa India y Estados Unidos fueron los países con más informes de caso, 32 y 11 casos, respectivamente. Asimismo, en cuanto a las lesiones neuroanatómicas, en su mayoría, los pacientes sufrieron lesiones mixtas (29%) y del lóbulo frontal (22%). De acuerdo con el estado de los pacientes, la patología tiene una mortalidad del 62%.ConclusionesSe concluye que la feohifomicosis cerebral tiene una alta mortalidad, no existe un tratamiento estandarizado y, en la mayoría de los casos, la infección fúngica del cerebro es mixta y afecta a varias partes del cerebro; además, si no se diagnostica y trata a tiempo, puede ocasionar la muerte de los pacientes. (AU)

INTRODUCTION: Cladophialophora bantiana is a filamentous fungus, known as a dematiaceous fungus because of the presence of melanin. This fungus is of clinical importance because it is neurotropic and causes cerebral phaeohyphomycosis. Material and methods. The available scientific information on the development of cerebral phaeohyphomycosis caused by Cladophialophora bantiana was analysed by selecting articles from the PubMed, Scopus and Google Scholar databases that describe case reports of fungal infection by C. bantiana in adults, taking into account the analysis of the patients’ symptomatology, clinical history and neuroanatomical damage, in addition to considering the mortality of the condition.RESULTSIndia and United States were the countries with most case reports, with 32 and 11 cases respectively. Moreover, in terms of neuroanatomical lesions, the majority of patients suffered mixed lesions (29%) and frontal lobe lesions (22%). In accordance with the patients’ condition, the pathology has a mortality rate of 62%.CONCLUSIONSIt is concluded that cerebral phaeohyphomycosis has a high mortality rate, there is no standardised treatment and, in most cases, the fungal infection of the brain is mixed and affects several different parts of it. Furthermore, if not diagnosed and treated in time, it can lead to the patients’ death. (AU)

Phaeohyphomycosis caused by Neoscytalidiumdimidiatum in a COVID-19 patient.

BACKGROUND: Neoscytalidiumdimidiatum is an opportunistic dematiaceous fungus belonging to the class Dothideomycetes. CASE REPORT: We report a case of N. dimidiatum cerebral phaeohyphomycosis post COVID-19 infection in a 32-year-old male from Iran. The causative agent was identified by cytopathology, routine mycological methods, and DNA sequencing of the internal transcribed spacer (ITS) region of rDNA. Apart from COVID-19 complications and the corticosteroid therapy, no underlying condition was diagnosed. The symptoms suggesting the fungal infection were shown two weeks after being discharged from COVID-19 hospital stay. Magnetic resonance of the brain showed a multi-focal central nervous system infection. The delayed identification of the fungus and, thus, a late starting of the antifungal treatment with amphotericin B, might have affected the patient outcome as he finally died. CONCLUSIONS: Considering the rare incidence of N. dimidiatum infections, this case should aware us about them, leading to a timely antifungal management.

Phaeohyphomycosis caused by Neoscytalidiumdimidiatum in a COVID-19 patient / Feohifomicosis producida por Neoscytalidium dimidiatum en un paciente con COVID-19

Background: Neoscytalidiumdimidiatum is an opportunistic dematiaceous fungus belonging to the class Dothideomycetes.Case reportWe report a case of N. dimidiatum cerebral phaeohyphomycosis post COVID-19 infection in a 32-year-old male from Iran. The causative agent was identified by cytopathology, routine mycological methods, and DNA sequencing of the internal transcribed spacer (ITS) region of rDNA. Apart from COVID-19 complications and the corticosteroid therapy, no underlying condition was diagnosed. The symptoms suggesting the fungal infection were shown two weeks after being discharged from COVID-19 hospital stay. Magnetic resonance of the brain showed a multi-focal central nervous system infection. The delayed identification of the fungus and, thus, a late starting of the antifungal treatment with amphotericin B, might have affected the patient outcome as he finally died.ConclusionsConsidering the rare incidence of N. dimidiatum infections, this case should aware us about them, leading to a timely antifungal management. (AU)

Antecedentes: Neoscytalidiumdimidiatum es un hongo dematiáceo oportunista perteneciente a la clase Dothideomycetes.Caso clínicoPresentamos un caso de feohifomicosis cerebral por N. dimidiatum posterior a infección por COVID-19 en un paciente iraní de 32 años de edad. El microorganismo responsable fue identificado por citopatología, métodos rutinarios de laboratorio y secuenciación del ADN del espaciador transcrito interno (ITS) del ADNr. Aparte de las complicaciones asociadas a la COVID-19 y al uso de corticoides, el enfermo no presentaba enfermedades subyacentes. Los síntomas indicativos de infección fúngica fueron observados dos semanas después de que el paciente recibiera el alta hospitalaria por la COVID-19. La resonancia magnética cerebral mostró una infección multifocal en el sistema nervioso central. El retraso en la identificación del hongo responsable y, consecuentemente, en la instauración del tratamiento antifúngico con anfotericina B, pudo afectar a la evolución del paciente, ya que este finalmente falleció.ConclusionesA pesar de la escasa incidencia de las infecciones por N. dimidiatum, este caso debe alertarnos sobre su existencia para instaurar así el tratamiento antifúngico conveniente a la mayor brevedad. (AU)

Exophiala dermatitidis as a cause of central line associated bloodstream infection in an infant: Case report and literature review.

BACKGROUND: Exophiala dermatitidis is a dematiaceous fungus known to cause superficial, subcutaneous, cutaneous and deep seated infections, and rarely central line associated bloodstream infection (CLABSI). A case of CLABSI due to E. dermatitidis in an infant is described. CASE REPORT: Clinical and laboratory data were extracted from patient's chart and laboratory records. The isolate was identified as E. dermatitidis by phenotypic characterization and sequencing of the ITS and LSU regions of the ribosomal DNA. Medline search was done to review all cases of CLABSI due to E. dermatitidis. Among the azoles tested, posaconazole (0.06mg/l), voriconazole (0.03mg/l) and itraconazole (0.03mg/l) showed very low MICs when compared to fluconazole (4mg/l) CONCLUSIONS: As we did not found in the literature any case of CLABSI due to E. dermatitidis in an infant, we report the first one. Sequencing is a mandatory method for accurately identifying this species. Prompt removal of the central line, followed by a treatment with amphotericin B or an azole, seems to be the most effective treatment.

Absceso frío en una mano por un hongo dematiáceo. Primera comunicación en Chile de Pleurostomophora richardsiae / Hand cold abscess by a dematiaceous fungus. First report in Chile of Pleurostomophora richardsiae

Resumen Los hongos dematiáceos son un grupo heterogéneo de microorganismos capaces de sintetizar melanina. Las infecciones de este grupo que producen hifas en tejidos se denominan feohifomicosis y generalmente afectan la piel y tejidos vecinos. Presentamos el caso de un varón de 86 años con un tumor quístico blando progresivo en su mano y muñeca derecha, no asociado a dolor o signos inflamatorios. Se demostró una tenosinovitis de los flexores con pseudocapsula y sinovitis adherida a los tendones. El cultivo demostró un hongo dematiáceo compatible con Pleurostomophora richardsiae que se confirmó por secuenciación de la región ITS. La biopsia mostró una inflamación crónica granulomatosa e hifas. Después del drenaje quirúrgico, el paciente fue dado de alta sin terapia antifúngica, pero falleció por causas no relacionadas, tres meses después. Esta es la primera descripción de P. richardsiae como causa de feohifomicosis en Chile. Esta patología se puede sospechar cuando una lesión quística cutánea crónica involucra extremidades sin signos inflamatorios. Puede afectar a pacientes inmunocompetentes o inmunocomprometidos. El tratamiento contempla la escisión quirúrgica con o sin terapia antifúngica.

Abstract Dematiaceous fungi are a heterogeneous group of microorganisms able to synthesize melanin. Infections by this group that provoke tissular hyphae are called phaeohyphomycosis and usually involve skin and neighbor tissues. We present the case of a 86 years old men with a progressive soft cystic tumor in his right hand and wrist not associated to pain or inflammatory signs. A surgical intervention demonstrated flexor tenosynovitis with serous secretion, pseudocapsule and synovitis. Fungal culture demonstrated a dematiaceous fungi compatible with Pleurostomophora richardsiae that was confirmed by sequencing of the ITS region. Biopsy showed chronic inflammation with granuloma and hyphae. After surgical drainage, the patient was discharged without antifungal therapy but died of unrelated causes three month later. This is the first description of P. richardsiae as a cause of phaeohyphomycosis in Chile, a country with a template climate. Phaeohyphomycosis can be suspected when a chronic skin cystic lesion involves extremities without inflammatory signs, sometimes with an associated fistula. It may affect immunocompetent or immunosuppressed patients. Treatment involves surgical excision with or without antifungal therapy and prognosis is favorable.

Feohifomicosis por Exserohilum rostratum en un paciente pediátrico con leucemia linfoblástica aguda postransplante de médula ósea / Phaeohyphomycosis by Exserohilum rostratum in a pediatric patient with acute lymphoblastic leukemia after bone marrow transplantation

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.

Afectación intestinal por un hongo dematiáceo / Intestinal disease by a dematiaceous fungi

Resumen Introducción: Los hongos dematiáceos se caracterizan por la presencia de abundante melanina en su pared celular. Presentan una distribución mundial, siendo más comunes en climas tropicales y subtropicales. Producen infecciones cutáneas y subcutáneas, además de enfermedades alérgicas, neumonías, abscesos cerebrales o infecciones diseminadas. Caso Clínico: Presentamos el caso de un paciente con adenocarcinoma de recto intervenido quirúrgicamente con hallazgo incidental de divertículo de Meckel y en el cual en el estudio anatomopatológico reveló la presencia de un hongo dematiáceo

Introduction: Dematiaceous fungi are characterized by the presence of brown melanine or melanine like pigments in their cell wall. They are generally distributed worldwide, being more common in tropical and subtropical climates. The clinical syndromes are often cutaneous and subcutaneous infections, but can be also responsible of allergic diseases, pneumonias, cerebral abscesses or disseminated infections. Clinical Case: We present the case of a patient with a diagnosis of rectal adenocarcinoma intervening surgically and with an incidental finding of Meckel's Diverticulum. The anatomopathological study revealed the presence of a dematiaceous fungi.

[Phaeohyphomycosis by Exserohilum rostratum in a pediatric patient with acute lymphoblastic leukemia after bone marrow transplantation]. / Feohifomicosis por Exserohilum rostratum en un paciente pediátrico con leucemia linfoblástica aguda postransplante de médula ósea.

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: Exserohilumrostratum, Exserohilumlongirostratum and Exserohilummcginnisii. 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.'

Absceso cerebral por Cladophialophora bantiana en un paciente con trasplante renal: reporte de un caso / Brain abscess caused by Cladophialophora bantiana after renal allograft loss: A case report

Resumen Las feohifomicosis cerebrales son infecciones graves causadas por mohos dematiáceos, entre los cuales Cladophialophora bantiana es una de las especies más comúnmente aislada. Esta tiene tropismo por el sistema nervioso central y frecuentemente produce abscesos cerebrales en pacientes inmunocompetentes; además, en los inmunocomprometidos también puede ocasionar infección diseminada. Pese a la disponibilidad de medicamentos antifúngicos de amplio espectro, a menudo se requiere también la intervención quirúrgica; de todas maneras, la mortalidad es elevada. El diagnóstico debe hacerse interviniendo para tomar la muestra y hacer el cultivo y las pruebas de sensibilidad. Se presenta aquí el caso de un paciente con trasplante renal que presentó un absceso cerebral por C. bantiana, el cual se extrajo mediante resección quirúrgica. El paciente recibió tratamiento con voriconazol, con adecuada respuesta, mejoría y sin secuelas neurológicas.

Abstract Cerebral feohifomycosis are severe infections caused by dematiaceous fungi. Cladophialophora bantiana is one of the most commonly isolated species; it has central nervous system tropism and it often manifests as a brain abscess in immunocompetent patients. In immunocompromised patients, it can lead to brain abscesses and disseminated infections. Despite the availability of broad-spectrum antifungal drugs, it is a must to perform surgical management, in addition to drug therapy. However, mortality is high. The diagnostic approach must be invasive to establish a timely diagnosis and direct treatment based on culture and susceptibility tests. We report a case of brain abscess caused by C. bantiana in an immunosuppressed patient who was treated with surgical resection and voriconazole with an adequate response to therapy and without neurological sequels.

Curso clínico de micosis producidas por Exophiala xenobiotica en paciente trasplantado renal en el Hospital Universitario de Burgos / Clinical course of micosis produced by exophiala xenobiotica in renal transplanted patient at the University Hospital of Burgos

Resumen Las micosis por Exophiala xenobiotica comprenden un amplio espectro clínico en pacientes inmunosuprimidos, desde infecciones localizadas, hasta diseminadas. Son incluidas como etiología de las feohifomicosis, actualmente consideradas como infecciones fúngicas emergentes en pacientes trasplantados de órgano sólido. Presentamos 2 casos de micosis por Eexophiala xenobiotica en paciente trasplantado renal, una micosis cutánea localizada y una infección sistémica con afectación del sistema nervioso central.

Abstract Mycosis by exophiala xenobiotica comprise a broad clinical spectrum in immunosuppressed patients, from localized to disseminated infections. They are a recognized etiology of phaeohyphomycosis, currently considered as emerging fungal infections in transplanted solid organ recipients. We present 2 cases of mycosis by exophiala xenobiotica in kidney transplant recipients, a localized cutaneous mycosis and a systemic infection with central nervous system involvement.

Cutaneous infection by Phaeoacremonium parasiticum.

BACKGROUND: Phaeoacremonium parasiticum is considered a rare infectious agent that is part of a heterogeneous group of fungi causing phaeohyphomycosis. This organism is capable of producing subcutaneous infections, eumycetomas, osteomyelitis, arthritis, myositis and also disseminated diseases, such as fungemia and endocarditis. CASE REPORT: We describe a case of cutaneous infection by P. parasiticum in a kidney transplant patient. The identification of this microorganism was performed by microbiological and histopathological studies and confirmed with the sequence of the gene encoding ß-tubulin and a real time panfungal PCR targeting 18S ribosomal RNA gene. The microorganism was correctly identified by phenotypic and molecular methods. The patient was treated with oral antifungal therapy and a debulking surgery and evolved without any complication. CONCLUSIONS: The diagnosis of this infection is difficult and usually affects kidney transplant patients, but the reasons of this association are still unknown.

Feohifomicosis nasal por Curvularia spicifera en un paciente pediátrico con neutropenia y leucemia mieloide aguda / Nasal phaeohyphomycosis by Curvularia spicifera in pediatric patient with neutropenia and acute myeloid leukemia

There are very few reports of pediatric patients with infections by dematiaceous filamentous fungi. In this publication we report a case of invasive fungal infection of the nasal septum by Curvularia spicifera in a pediatric patient with acute myeloid leukemia. The patient presented with a painful scabby wound in the nasal vestibule. Culture and universal PCR were consistent with Curvularia spicifera. Early management with surgical debridement and bi-associated antifungal therapy achieved complete resolution of the lesions, with no evidence of dissemination and relapses. Clinical management of these fungal infections represents a challenge as the antifungal selection and duration of therapy is not yet well stablished.

Existen pocos reportes de infecciones por hongos dematiáceos en pediatría. Comunicamos el caso de una infección fúngica invasora del tabique nasal en un niño con una leucemia mieloide aguda, que se presentó como una lesión costrosa dolorosa en el vestíbulo nasal. Se realizó desbridamiento quirúrgico precoz y recibió tratamiento antifúngico biasociado, lográndose resolución completa de las lesiones, sin diseminación ni recaídas. El cultivo y la RPC universal fueron compatibles con Curvularia spicifera. El manejo de estas infecciones fúngicas representa un desafío, considerando que la elección del agente antifúngico y la duración de la terapia no están completamente establecidas.

A case of central nervous system infection due to Cladophialophora bantiana.

BACKGROUND: Cladophialophora bantiana is a melanised mold with a pronounced tropism for the central nervous system, almost exclusively causing human brain abscesses. CASE REPORT: We describe a case of cerebral infection by this fungus in an otherwise healthy 28-year-old coal-miner. Environmental occurrence, route of entry, and incubation period of this fungus are unknown, but our case is informative in that the first symptoms occurred about eight weeks after known traumatic inoculation. Lesions were compatible with tuberculous granulomas, and the patient initially received antitubercular treatment. Melanised fungal cells were seen in a brain biopsy and abscess materials. Therapy was switched from empirical antitubercular treatment to amphotericin B (0.5mg/kg/d), but was changed to voriconazole 200mg/d, i.v. on the basis of antifungal susceptibility test results. The patient responded clinically, and gradually improved. The isolate was identified by sequencing of the Internal Transcribed Spacer domain of rDNA. CONCLUSIONS: Given the non-specific clinical manifestations of C. bantiana cerebral abscesses, clinicians and laboratory workers should suspect infections caused by C. bantiana, particularly in immunocompromised patients with a trauma history.

Feohifomicosis, una infección fúngica oportunista emergente / Phaeohyphomycosis, an emerging opportunistic fungal infection

Las feohifomicosis comprenden un grupo de infecciones causadas por hongos pigmentados, negros o dematiáceos. En las últimas dos décadas se ha incrementado la frecuencia de reportes y la diversidad de los agentes etiológicos implicados, especialmente en los individuos inmunosuprimidos. Los principales géneros involucrados incluyen Alternaria, Bipolaris, Cladophialophora y Exophiala. Estos hongos típicamente se encuentran en el suelo y son introducidos al cuerpo a través de la inhalación o el trauma. El espectro de las enfermedades asociadas también se ha ampliado e incluye infecciones cutáneas superficiales y profundas, enfermedad alérgica, neumonía, abscesos cerebrales e infección diseminada. El diagnóstico de laboratorio está basado en las características morfológicas de los agentes según lo observado en el examen microscópico directo y la histopatología. El tratamiento es a menudo difícil y depende del síndrome clínico. No hay terapias estandarizadas, pero voriconazol, posaconazol e itraconazol han demostrado la actividad in vitro más consistente contra este grupo de hongos. La rareza de estas micosis justifica describir las características clínicas, epidemiológicas y diagnósticas para ayudar a un reconocimiento inmediato y un tratamiento oportuno

Phaeohyphomycosis comprises a group of infections caused by black pigmented or dematiaceous fungi. In the last two decades the frequency of reporting and diversity of etiologic agents involved have increased, especially in immunosuppressed individuals. The main genera involved include Alternaria, Bipolaris, Cladophialophora and Exophiala. These fungi are typically found in the soil and introduced through inhalation or trauma. The spectrum of associated diseases also has broadened and includes superficial and deep cutaneous infections, allergic disease, pneumonia, brain abscess and disseminated infection. The laboratory diagnosis is based on the morphological characteristics of the agents as observed by direct microscopic examination and histopathology. Treatment is often challenging and depends uponthe clinical syndrome. There are no standardized therapies but voriconazole, posaconazole and itraconazole demonstrate the most consistent in vitro activity against this group of fungi. The rarity of this mycosis justifies describe the clinical, epidemiological and diagnostic characteristics to aid in its immediate recognition and early treatment

[Subcutaneous phaeohyphomycosis caused by Phaeoacremonium parasiticum]. / Feohifomicosis subcutánea causada por Phaeoacremonium parasiticum.

BACKGROUND: From the available literature, it is demonstrated that dematiaceous fungal infections mostly affect immunosuppressed patients. These infections can occur in different forms, from subcutaneous infection to disseminated forms that may compromise the life of the patient. In many cases the infection is related to the inoculation of the microorganism by diverse traumatic mechanisms, which determines the course of the infection to be slower in some cases. CASE REPORT: We describe two cases of phaeohyphomycosis caused by Phaeoacremonium parasiticum: A cancer patient with subcutaneous lesions affecting the left hand and forearm, and a patient who presented with subcutaneous abscesses in the left leg. CONCLUSIONS: These cases confirm the presence of this type of fungus in Spain. In the second case a combination of amphotericin B lipid complex and posaconazole, together with several surgical resections, were necessary in order to overcome the infection.

[Onychomycosis for Curvularia lunata var. aeria: presentation of a clinical case]. / Onicomicosis por Curvularia lunata var. aeria: presentación de un caso clínico.

We here report a clinical case of a female patient presenting with a three-month history of a white onychodystrophic lesion of both hallux. The infection was due to a mold, identified as Curvularia lunata var aeria. The Curvularia gender is related to the production of phaeohyphomycosis, Curvularia lunata cause onychomycosis occasionally. The patient was treated with itraconazole 200mg/day, during six month with complete remission of the lesions. In conclusion, it is important to consider these fungi as causative agent of nail mycosis since the initial site of infection may be a pathway for systemic dissemination in inmunocompromised patients.

Onicomicosis por Curvularia lunata var. aeria: presentación de un caso clínico / [Onychomycosis for Curvularia lunata var. aeria: Presentation of a clinical case]

We here report a clinical case of a female patient presenting with a three-month history of a white onychodystrophic lesion of both hallux. The infection was due to a mold, identified as Curvularia lunata var aeria. The Curvularia gender is related to the production of phaeohyphomycosis, Curvularia lunata cause onychomycosis occasionally. The patient was treated with itraconazole 200mg/day, during six month with complete remission of the lesions. In conclusion, it is important to consider these fungi as causative agent of nail mycosis since the initial site of infection may be a pathway for systemic dissemination in inmunocompromised patients

Se presenta el caso clínico de una paciente que consultó por una lesión onicodistrófica blanquecina en ambos hallux, de 3 meses de evolución. El examen micológico determinó que el agente causal de la infección era un moho, Curvularia lunata var. aeria. El género Curvularia se asocia a la producción de feohifomicosis. Curvularia lunata es una especie que ocasionalmente puede producir onicomicosis. Se administró tratamiento por pulsos con itraconazol 200mg/día durante 6 meses, con remisión completa de las lesiones. Es importante tener en cuenta a estos hongos como agentes oportunistas causales de micosis ungueales, ya que el lugar inicial de infección puede significar una vía para la diseminación sistémica en pacientes inmunodeprimidos

Feohifomicosis causada por Colletotrichum gloeosporioides y Alternaria infectoria en un paciente trasplantado renal / Phaeohyphomycosis caused by Colletotrichum gloeosporioides and Alternaría infectoria in renal transplant recipient

Several species of black fungi have been reported as agents of subcutaneous phaeohyphomycosis. Although most of these fungi are considered opportunistic pathogens, they play an important role in phaeohyphomycosis, a disease considered an emergent mycosis among solid organ recipients. We report a case of phaeohyphomycosis caused by Alternaria infectoria of the left hand and the 4th finger of the right hand of a 68-year-old male who underwent a renal transplant 35 months before. The lesion was treated with surgical excision. One year later, the patient presented a new lesion on the 5th finger of the right hand, but this time caused by Colletotrichum gloeosporioides that was also removed surgically. Both lesions did not relapse after being removed. Antifungal susceptibility testing was performed against five antifungal drugs (amphotericin B, itraconazole, flucytosine, fluconazole and voriconazole). Alternaria infectoria was resistant to all five drugs and C. gloeosporioides was sensitive only to amphotericin B and voriconazole. We emphasize the need of histopathologic and microbiologic studies of new lesions of phaeohyphomycosis, since in this case the same patient was infected twice by two different fungi.

Diversas especies de hongos negros han sido descritos como agentes de feohifomicosis subcutáneas. A pesar que la gran mayoría de estos se consideran como oportunistas, juegan un papel importante en la feohifomicosis, enfermedad considerada una micosis emergente en pacientes trasplantados de órganos sólidos. Reportamos un caso de feohifomicosis subcutánea causada por Alternaria infectoria en el dorso de la mano izquierda y 4° falange de la mano derecha de un paciente de sexo masculino de 68 años de edad, que había sido sometido a un trasplante de riñón 35 meses antes. Se realizó escisión quirúrgica de la lesión. Después de un año, el paciente presentó una nueva lesión, esta vez en la 5° falange de la mano derecha causada por Colletotrichum gloeosporioides, lesión que también fue removida quirúrgicamente. El paciente no presentó nuevas lesiones después de las cirugías. Las pruebas de susceptibilidad antifúngica fueron realizados utilizando cinco antifúngicos (anfotericina B, itraconazol, 5-fluorcitosina, fluconazol y voriconazol). Alternaria infectoria presentó resistencia a los cinco antifíngicos y C. gloeosporioides fue susceptible solamente a anfotericina B y voriconazol. Enfatizamos la necesidad de realizar estudios histopatológicas y microbiológicos de nuevas lesiones de feohifomicosis, ya que el mismo paciente fue infectado por dos hongos diferentes.

Cutaneous infection with Alternaria triticina in a Bilateral lung transplant recipient.

We report the case of a 60-year-old man who was receiving immunosuppressive therapy for a bilateral lung transplant and presented with a crusted, violaceous plaque on the left hand. Based on histopathology and microbiological culture the patient was diagnosed with infection by Alternaria species. Treatment with itraconazole led to complete resolution of the skin lesion. Forty months later he developed four reddish, nodular, skin lesions on the left leg. Analysis of a biopsy from one of these lesions using histopathologic and molecular techniques identified a mold that shared 98% homology with a strain of Alternaria triticina. Alternaria species belong to a group of dematiaceous fungi that cause opportunistic infections in humans. The incidence of these infections is increasing, mainly in transplant centers. To the best of our knowledge, this is the first reported case of a human infection caused by A. triticina.

[Cerebral phaeohyphomycosis: description of a case and review of the literature]. / Feohifomicosis cerebral: descripción de un caso y revisión de la literatura.

Cerebral phaeohyphomycosis is a rare invasive fungal infection with very few cases referenced in the literature. There is no standardized treatment, and it is associated with poor outcomes. Cladophialophora bantiana, a fungus with special tropism for the central nervous system, is one of the causal agents of phaeohyphomycosis. The case presented here deals with a brain abscess by C. bantiana in an adult with Crohn's disease had beed being treated with immunosuppressive drugs. Despite the correct etiological diagnosis, surgical and pharmacological treatments, the patient died 32 days after surgery. A description of the case is followed by a review of all cerebral C. bantiana phaeohyphomycosis cases published in the last 10 years. Regardless of the use of advanced new imaging techniques in the diagnosis and treatment with new antifungal agents, cerebral phaeohyphomycosis by C. bantiana continues to have very poor prognosis. While new more successful therapeutic treatments appear, a combined surgical and pharmacological approach seems to be more appropriate for this severe mycosis.