Rinosporidiose nasal e laringeana em equinos tratados com eletrocauterização / Nasal and laryngeal rhinosporidiosis in horses treated with electrocautery

Background: Rhinosporidiosis is considered an endemic disease in some countries and can affect several species of animals, among them, also equines. In this specie, although the nasal cavity is the most common site of infection, in some cases, it could also be spotted in the larynx region. The present study had as an objective to describe two cases of rhinosporidiosis in horses, one of them nasal and the other in the laryngeal area. Cases: Horse 1. A 12-year-old male Standardbred was sent to the veterinary hospital for the resection of the formation presented in the mucocutaneous junction of the left nostril. During the physical exam, a red mass of a moderately consistency, with an irregular, verrucous, pedunculated and ulcerated surface was observed, measuring approximately 2 cm in diameter. The surgical procedure for the resection of the mass was done through the use of the electrocautery technique, with the animal sedated with a romifidine dose of 0.08 mg/kg, a butorphanol dose of 0.04 mg/kg and a local anesthesia of 2% lidocaine. Eight months after the surgical procedure, the animal returned to the hospital and the presence of three new masses was noted in the same nostril, around the region where the extracted mass used to be found and they resembled the previous lesions. The horses owner didnt authorize a new surgery or a new histopathological exam of the lesions. Horse 2. The other case refers to an asymptomatic 15-year-old male mixed breed. During a routine gastroscopic exam, the presence of several reddish coloration nodular and polypoid formations of irregular surface was observed in the larynx. Only one formation in the dorsal portion of the pharynx was observed. During the...(AU)

Rinosporidiose nasal e laringeana em equinos tratados com eletrocauterização / Nasal and laryngeal rhinosporidiosis in horses treated with electrocautery

Background: Rhinosporidiosis is considered an endemic disease in some countries and can affect several species of animals, among them, also equines. In this specie, although the nasal cavity is the most common site of infection, in some cases, it could also be spotted in the larynx region. The present study had as an objective to describe two cases of rhinosporidiosis in horses, one of them nasal and the other in the laryngeal area. Cases: Horse 1. A 12-year-old male Standardbred was sent to the veterinary hospital for the resection of the formation presented in the mucocutaneous junction of the left nostril. During the physical exam, a red mass of a moderately consistency, with an irregular, verrucous, pedunculated and ulcerated surface was observed, measuring approximately 2 cm in diameter. The surgical procedure for the resection of the mass was done through the use of the electrocautery technique, with the animal sedated with a romifidine dose of 0.08 mg/kg, a butorphanol dose of 0.04 mg/kg and a local anesthesia of 2% lidocaine. Eight months after the surgical procedure, the animal returned to the hospital and the presence of three new masses was noted in the same nostril, around the region where the extracted mass used to be found and they resembled the previous lesions. The horse’s owner didn’t authorize a new surgery or a new histopathological exam of the lesions. Horse 2. The other case refers to an asymptomatic 15-year-old male mixed breed. During a routine gastroscopic exam, the presence of several reddish coloration nodular and polypoid formations of irregular surface was observed in the larynx. Only one formation in the dorsal portion of the pharynx was observed. During the...

Rhinosporidiosis in horses / Rinosporidiose em equinos

Rhinosporidiosis is a disease caused by Rhinosporidium seeberi, an aquatic protist of the class Mesomycetozoa. It primarily affects the nasal mucosa and transmission is associated with contaminated water contact. This report describes seven cases of rhinosporidiosis in horses in Rio Grande do Sul covering the period of 13 years. The disease predominantly affected Crioulo and thoroughbred horses. No apparent gender predisposition occurs, and age ranged from two to 25 years, with a median of 10 years. The gross aspects were characterized by unilateral (85.7%, 6/7) or bilateral (14.3%, 1/7) polyps. These were soft to friable, whitish to pink, cauliflower-like, with an irregular, sometimes ulcerated surface, measuring 2.5 to 6.0cm in diameter. There was a severe inflammatory infiltrate of the submucosa was observed, associated with moderate proliferation of the epithelium, and numerous rounded structures were identified compatible with sporangia of R. seeberi. Rhinosporidiosis should be included in the differential diagnosis of other conditions affecting the respiratory tract of horses, and it is important to perform histopathology for diagnosis.(AU)

A rinosporidiose é uma doença causada por Rhinosporidium seeberi, protista aquático da classe Mesomycetozoa. Acomete principalmente a mucosa nasal e a transmissão está associada ao contato com água contaminada. Este trabalho descreve sete casos de rinosporidiose em equinos no Rio Grande do Sul em um período de 13 anos. A doença afetou predominantemente cavalos de raça, como Crioulo e Puro Sangue Inglês, sem predisposição sexual evidente e a idade variou de dois a 25 anos, com a mediana de 10 anos. Macroscopicamente foram caracterizadas por pólipos unilaterais (85,7%; 6/7) ou bilaterais (14,3%; 1/7). Os pólipos eram macios a friáveis, esbranquiçados a róseos, com aspecto de couve flor e com superfície irregular, por vezes ulcerada, medindo 2,5 a 6,0cm de diâmetro. Havia infiltrado inflamatório piogranulomatoso acentuado na submucosa associado à moderada proliferação do epitélio e numerosas estruturas arredondadas compatíveis com esporângios de R. seeberi. A rinosporidiose deve ser incluída no diagnóstico diferencial de outras patologias que acometem o trato respiratório de equinos, sendo importante a realização da histopatologia para diagnóstico.(AU)

Rhinosporidiosis in horses / Rinosporidiose em equinos

Rhinosporidiosis is a disease caused by Rhinosporidium seeberi, an aquatic protist of the class Mesomycetozoa. It primarily affects the nasal mucosa and transmission is associated with contaminated water contact. This report describes seven cases of rhinosporidiosis in horses in Rio Grande do Sul covering the period of 13 years. The disease predominantly affected Crioulo and thoroughbred horses. No apparent gender predisposition occurs, and age ranged from two to 25 years, with a median of 10 years. The gross aspects were characterized by unilateral (85.7%, 6/7) or bilateral (14.3%, 1/7) polyps. These were soft to friable, whitish to pink, cauliflower-like, with an irregular, sometimes ulcerated surface, measuring 2.5 to 6.0cm in diameter. There was a severe inflammatory infiltrate of the submucosa was observed, associated with moderate proliferation of the epithelium, and numerous rounded structures were identified compatible with sporangia of R. seeberi. Rhinosporidiosis should be included in the differential diagnosis of other conditions affecting the respiratory tract of horses, and it is important to perform histopathology for diagnosis.(AU)

A rinosporidiose é uma doença causada por Rhinosporidium seeberi, protista aquático da classe Mesomycetozoa. Acomete principalmente a mucosa nasal e a transmissão está associada ao contato com água contaminada. Este trabalho descreve sete casos de rinosporidiose em equinos no Rio Grande do Sul em um período de 13 anos. A doença afetou predominantemente cavalos de raça, como Crioulo e Puro Sangue Inglês, sem predisposição sexual evidente e a idade variou de dois a 25 anos, com a mediana de 10 anos. Macroscopicamente foram caracterizadas por pólipos unilaterais (85,7%; 6/7) ou bilaterais (14,3%; 1/7). Os pólipos eram macios a friáveis, esbranquiçados a róseos, com aspecto de couve flor e com superfície irregular, por vezes ulcerada, medindo 2,5 a 6,0cm de diâmetro. Havia infiltrado inflamatório piogranulomatoso acentuado na submucosa associado à moderada proliferação do epitélio e numerosas estruturas arredondadas compatíveis com esporângios de R. seeberi. A rinosporidiose deve ser incluída no diagnóstico diferencial de outras patologias que acometem o trato respiratório de equinos, sendo importante a realização da histopatologia para diagnóstico.(AU)

Rinosporidiose: manifestação cutânea / Rhinosporidiosis: cutaneous manifestation

A rinosporidiose é uma doença infecciosa zooantropofílica mucocutânea causada pelo Rhinosporidium seeberi. Caracteriza-se por massa polipoide, séssil ou pedunculada, eritematosa, moriforme e friável, principalmente, nas mucosas nasais e oculares. A ocorrência na pele é ocasional, por disseminação a partir da mucosa adjacente, inoculação direta ou generalização via hematogênica. Os autores apresentam o caso clínico de um menino de oito anos de idade, com lesão isolada localizada no epicanto medial do olho direito.

Rhinosporidiosis is an infectious mucocutaneous disease caused by Rhinosporidium seeberi. It is characterized by sessile or pedunculated polyps which are erythematous, moriform and friable and which mainly affect the ocular and nasal mucosa. The occurrence of skin lesions is occasional and due to dissemination from the adjacent mucosa, direct inoculation or hematogenous dissemination. The authors report the clinical case of an eight-year-old boy with an isolated lesion located in the medial epicanthus of the right eye.

Doenças da cavidade nasal em ruminantes no Brasil / Diseases of the nasal cavity of ruminants in Brazil

This paper reports diseases of the nasal cavity diagnosed in ruminants in the Veterinary Hospital of the Federal University of Campina Grande, in Patos, state of Paraiba, northeastern Brazil, from 2003 to 2009. During that period three cases or outbreaks of diseases of the nasal cavity were reported in cattle, three in goats and nine in sheep (out of 404 diseases diagnosed in cattle, 330 in goats, and 338 in sheep). At all are reported one case of atopic rhinitis in cattle, seven outbreaks of conidiobolomycosis and two outbreaks of rhinofacial pythiosis in sheep, two cases of protothecosis and one of nasal aspergillosis in goats, and a myxoma and a fibrosarcoma in cattle. Additionally, other diseases of the nasal cavity reported in Brazil are reviewed, including oestrosis, rhinosporidiosis, squamous cell carcinoma, and enzootic ethmoidal tumor.

Este trabalho descreve as doenças das fossas nasais diagnosticadas em ruminantes no Hospital Veterinário da Universidade Federal de Campina Grande, em Patos, Paraíba, nos anos de 2003-2009. No período foram registrados três diagnósticos de doenças das fossas nasais de bovinos, três em caprinos e nove em ovinos (de um total de 404 diagnósticos em bovinos, 330 em caprinos e 338 em ovinos). Descrevem-se um caso de rinite atópica em bovinos, sete surtos de conidiobolomicose e dois de pitiose rinofacial em ovinos, dois casos de prototecose e um de aspergilose nasal em caprinos e um mixoma e um fibrossarcoma em bovinos. Adicionalmente, é realizada uma revisão de outras doenças das fossas nasais de ruminantes descritas em outras regiões do Brasil, incluindo oestrose, rinosporidiose, carcinoma epidermóide e tumor etmoidal enzoótico.

Doenças da cavidade nasal em ruminantes no Brasil / Diseases of the nasal cavity of ruminants in Brazil

This paper reports diseases of the nasal cavity diagnosed in ruminants in the Veterinary Hospital of the Federal University of Campina Grande, in Patos, state of Paraiba, northeastern Brazil, from 2003 to 2009. During that period three cases or outbreaks of diseases of the nasal cavity were reported in cattle, three in goats and nine in sheep (out of 404 diseases diagnosed in cattle, 330 in goats, and 338 in sheep). At all are reported one case of atopic rhinitis in cattle, seven outbreaks of conidiobolomycosis and two outbreaks of rhinofacial pythiosis in sheep, two cases of protothecosis and one of nasal aspergillosis in goats, and a myxoma and a fibrosarcoma in cattle. Additionally, other diseases of the nasal cavity reported in Brazil are reviewed, including oestrosis, rhinosporidiosis, squamous cell carcinoma, and enzootic ethmoidal tumor.(AU)

Este trabalho descreve as doenças das fossas nasais diagnosticadas em ruminantes no Hospital Veterinário da Universidade Federal de Campina Grande, em Patos, Paraíba, nos anos de 2003-2009. No período foram registrados três diagnósticos de doenças das fossas nasais de bovinos, três em caprinos e nove em ovinos (de um total de 404 diagnósticos em bovinos, 330 em caprinos e 338 em ovinos). Descrevem-se um caso de rinite atópica em bovinos, sete surtos de conidiobolomicose e dois de pitiose rinofacial em ovinos, dois casos de prototecose e um de aspergilose nasal em caprinos e um mixoma e um fibrossarcoma em bovinos. Adicionalmente, é realizada uma revisão de outras doenças das fossas nasais de ruminantes descritas em outras regiões do Brasil, incluindo oestrose, rinosporidiose, carcinoma epidermóide e tumor etmoidal enzoótico.(AU)

Rinosporidiose nasal: diagnóstico diferencial de sinusite fúngica e papiloma invertido / Nasal rhinosporidiosis: differential diagnosis of fungal sinusitis and inverted papilloma

Introdução: Descrição de caso clínico de rinosporidiose, doença granulomatosa crônica e rara, causada pelo Rhinosporidium seeberi. Objetivo: Incluir esta doença nos diagnósticos diferenciais de lesões polipoides das fossas nasais. Relato do Caso: Paciente do sexo masculino, proveniente do norte do Brasil, evoluiu por 3 anos, com lesão polipoide papilomatosa, da fossa nasal esquerda. Realizada sinusectomia com remoção de toda lesão, centrada em bula etmoidal e processo uncinado. Diagnóstico diferencial foi de papiloma invertido ou sinusite fúngica. O exame histopatológico revelou acentuada infestação por numerosas estruturas fúngicas com formas de esporângios repletas de esporangiósporos. Os microorganismos eram positivos para as colorações de Grocott, PAS e Mucicarmim; ao contrário do Coccidiodes immitis, que não se contrasta pelo mucicarmim. Não se optou por tratamento complementar e após 1 ano de seguimento não existem sinais de recidiva. Comentários Finais: A rinosporidiose deve ser considerada como diagnóstico diferencial das lesões polipoides nasais. No diagnóstico das lesões intranasais deve-se sempre considerar a procedência do paciente. É obrigatório o estudo anátomo-patológico para definir o diagnóstico. Na rinosporidiose, a exérese cirúrgica pode ser curativa.

Introduction: Clinical case report of rhinosporidiosis, a rare and chronic granulomatous disease, caused by Rhinosporidium seeberi. Objective: To include this disease in the differential diagnoses of polypoid lesions of the nasal mass. Report: A male patient from the North of Brazil evolved a three-year papilomatous polypoid lesion of the left nasal cavity. He was submitted to sinusectomy with resection of the entire lesion, located in ethmoid bulla and uncinated process. Inverted papilloma or fungal sinusitis were differential diagnoses. The histopathological examination revealed a strong infestation by numerous fungal structures with sporangia shape full of sporangiospores. The microorganisms were positive for colorations of Grocott, PAS and Mayer's Mucicarmin; opposite from Coccidioides immitis, which presents no contrast by the mucicarmin. We didn't choose complimentary treatment and after one year of follow-up he presents with no sign of recurrence. Final Comments: Rhinosporidiosis must be considered to be a nasal polypoid lesion differential diagnosis. In the intranasal lesions diagnosis we should keep in mind the patient's origin. The anatomopathological study is mandatory to set the diagnosis. In the rhinosporidiosis, the surgical exeresis can be a curative treatment.

Histopatologia de lesões tumoriformes presentes na cavidade nasal de eqüídeos do Brasil / Histopathology of tumor-like masses present in the nasal cavity of equids from Brazil

Este estudo foi realizado com o objetivo de analisar os aspectos microscópicos e enfatizar a importância do exame histopatológico na determinação do diagnóstico de lesões tumoriformes na cavidade nasal de eqüídeos. Para tanto, foram estudados microscopicamente cortes de tecido de 11 eqüídeos com lesões tumoriformes na cavidade nasal. Essas amostras foram enviadas ao Serviço de Anatomia Patológica da Faculdade de Medicina Veterinária da Universidade Federal Fluminense, Niterói, Rio de Janeiro, no período de 2000 a 2004. Foram diagnosticados três casos de rinosporidiose, um de amiloidose, seis de pólipos nasais e um de hematoma etmoidal progressivo.

The purpose of the present study was to analyze the microscopic aspects of tumor-like masses present in the nasal cavity of equids and also to emphasize the importance of histopathological examination for determining the diagnosis. Tissue sections of tumor-like masses from the nasal cavity of 11 equids were microscopically examined. These samples were sent to the Anatomic Pathology Service of the Veterinary Medicine College from the Fluminense Federal University, Niterói, Rio de Janeiro, from 2000 to 2004. Three cases of rhinosporidiosis, one of amyloidosis, six of nasal polyps and one of progressive ethmoid hematoma were diagnosed.

Histopatologia de lesões tumoriformes presentes na cavidade nasal de eqüídeos do Brasil

The purpose of the present study was to analyze the microscopic aspects of tumor-like masses present in the nasal cavity of equids and also to emphasize the importance of histopathological examination for determining the diagnosis. Tissue sections of tumor-like masses from the nasal cavity of 11 equids were microscopically examined. These samples were sent to the Anatomic Pathology Service of the Veterinary Medicine College from the Fluminense Federal University, Niterói, Rio de Janeiro, from 2000 to 2004. Three cases of rhinosporidiosis, one of amyloidosis, six of nasal polyps and one of progressive ethmoid hematoma were diagnosed.

Este estudo foi realizado com o objetivo de analisar os aspectos microscópicos e enfatizar a importância do exame histopatológico na determinação do diagnóstico de lesões tumoriformes na cavidade nasal de eqüídeos. Para tanto, foram estudados microscopicamente cortes de tecido de 11 eqüídeos com lesões tumoriformes na cavidade nasal. Essas amostras foram enviadas ao Serviço de Anatomia Patológica da Faculdade de Medicina Veterinária da Universidade Federal Fluminense, Niterói, Rio de Janeiro, no período de 2000 a 2004. Foram diagnosticados três casos de rinosporidiose, um de amiloidose, seis de pólipos nasais e um de hematoma etmoidal progressivo.

Histopatologia de lesões tumoriformes presentes na cavidade nasal de eqüídeos do Brasil

The purpose of the present study was to analyze the microscopic aspects of tumor-like masses present in the nasal cavity of equids and also to emphasize the importance of histopathological examination for determining the diagnosis. Tissue sections of tumor-like masses from the nasal cavity of 11 equids were microscopically examined. These samples were sent to the Anatomic Pathology Service of the Veterinary Medicine College from the Fluminense Federal University, Niterói, Rio de Janeiro, from 2000 to 2004. Three cases of rhinosporidiosis, one of amyloidosis, six of nasal polyps and one of progressive ethmoid hematoma were diagnosed.

Este estudo foi realizado com o objetivo de analisar os aspectos microscópicos e enfatizar a importância do exame histopatológico na determinação do diagnóstico de lesões tumoriformes na cavidade nasal de eqüídeos. Para tanto, foram estudados microscopicamente cortes de tecido de 11 eqüídeos com lesões tumoriformes na cavidade nasal. Essas amostras foram enviadas ao Serviço de Anatomia Patológica da Faculdade de Medicina Veterinária da Universidade Federal Fluminense, Niterói, Rio de Janeiro, no período de 2000 a 2004. Foram diagnosticados três casos de rinosporidiose, um de amiloidose, seis de pólipos nasais e um de hematoma etmoidal progressivo.

Histopatologia de lesões tumoriformes presentes na cavidade nasal de eqüídeos do Brasil

The purpose of the present study was to analyze the microscopic aspects of tumor-like masses present in the nasal cavity of equids and also to emphasize the importance of histopathological examination for determining the diagnosis. Tissue sections of tumor-like masses from the nasal cavity of 11 equids were microscopically examined. These samples were sent to the Anatomic Pathology Service of the Veterinary Medicine College from the Fluminense Federal University, Niterói, Rio de Janeiro, from 2000 to 2004. Three cases of rhinosporidiosis, one of amyloidosis, six of nasal polyps and one of progressive ethmoid hematoma were diagnosed.

Este estudo foi realizado com o objetivo de analisar os aspectos microscópicos e enfatizar a importância do exame histopatológico na determinação do diagnóstico de lesões tumoriformes na cavidade nasal de eqüídeos. Para tanto, foram estudados microscopicamente cortes de tecido de 11 eqüídeos com lesões tumoriformes na cavidade nasal. Essas amostras foram enviadas ao Serviço de Anatomia Patológica da Faculdade de Medicina Veterinária da Universidade Federal Fluminense, Niterói, Rio de Janeiro, no período de 2000 a 2004. Foram diagnosticados três casos de rinosporidiose, um de amiloidose, seis de pólipos nasais e um de hematoma etmoidal progressivo.

Afilamento escleral em paciente com rinosporidiose conjuntival / Scleral thinning in a patient with conjunctival rhinosporidiosis

Os autores descrevem um caso de rinosporidiose conjuntival acompanhado de afilamento escleral, tratado cirurgicamente com enxerto escleral. São analisadas semelhanças e diferenças com outros casos descritos na literatura.

The authors report a case of conjunctival rhinosporidiosis associated with scleral thinning treated surgically with scleral graft. The similarities and differences with other reported cases in the literature are analyzed.