Arytenoid chondritis in two calves/Condrite aritenoide em duas bezerras

Although, calf diphtheria and necrotic laryngitis are common infections in the oral cavity's soft tissues, arytenoid chondritis is addressed as a serious but rarely diagnosed complication in cattle. This paper aimed to describe clinical, laboratory, imaging, and pathological findings in two cal...

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Published in:Ciência rural Vol. 50; no. 6
Main Authors: Bonow, Mariana Oliveira, Lacerda, Maira dos Santos Carneiro, Castro, Marcio Botelho de, Pedroso, Pedro Miguel Ocampos, Borges, Jose Renato Junqueira, Soto-Blanco, Benito, Camara, Antonio Carlos Lopes
Format: Journal Article
Language:Spanish
Published: Universidade Federal de Santa Maria 01-06-2020
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Summary:Although, calf diphtheria and necrotic laryngitis are common infections in the oral cavity's soft tissues, arytenoid chondritis is addressed as a serious but rarely diagnosed complication in cattle. This paper aimed to describe clinical, laboratory, imaging, and pathological findings in two calves with arytenoid chondritis. A 2-month-old Jersey calf and a 3-month-old Girolando calf presented 40-days history of respiratory distress. In the former, oral endoscopy revealed enlarged and immobile arytenoids with major involvement of the left arytenoid, causing severe distortion and partial obstruction of the rima glottidis. In the latter, latero-lateral radiography of the head revealed radiolucent areas and thickening at the level of the larynx to the dorsal trachea. Pathological examination of one calf showed neutrophilic multifocal inflammatory infiltrate and areas of necrosis in the cricoarytenoid cartilage, surrounded by abscessation. Definitive diagnosis of arytenoid chondritis in these two calves was established on the basis of clinical, laboratory, imaging (endoscopy and radiography), and pathological findings. Daily and careful observation of the herds and the use of ancillary diagnostic methods allowed the early diagnosis of the disease, and accurate diagnosis can improve prognosis and increase treatment success rate. Key words: calf diphtheria, necrotic laryngitis, respiratory system, suppurative lesion. Embora a difteria em bezerros e a laringite necrotica sejam infeccoes comuns nos tecidos moles da cavidade oral, a condrite aritenoide e considerada uma complicacao grave, mas raramente diagnosticada em bovinos. Este trabalho tem como objetivo descrever os achados clinicos, laboratoriais, de imagem e patologicos em duas bezerras apresentando condrite aritenoide. Uma bezerra Jersey de dois meses de idade e uma bezerra Girolando de tres meses de idade apresentavam dificuldades respiratorias por 40 dias. Na primeira, a endoscopia oral revelou aritenoides aumentadas e imoveis, com grande envolvimento da aritenoide esquerda, causando distorcao grave e obstrucao parcial de rima glottidis. Na segunda, a radiografia latero-lateral da cabeca revelou areas radioluscentes e espessamento ao nivel da laringe ate a traqueia dorsal. O exame patologico de uma bezerra revelou infiltrado inflamatorio multifocal neutrofilico e areas de necrose na cartilagem cricoaritenoide, circundadas por abscessos. O diagnostico definitivo de condrite aritenoide nessas duas bezerras foi estabelecido com base nos achados clinicos, laboratoriais, de imagem (endoscopia e radiografia) e patologicos. O monitoramento diario e minucioso dos rebanhos e o uso de metodos auxiliares de diagnostico permitem o diagnostico precoce da enfermidade, sendo que o diagnostico preciso pode melhorar o prognostico e aumentar a taxa de sucesso do tratamento. Palavras-chave: difteria em bezerros, laringite necrotica, lesao supurativa, sistema respiratorio.
ISSN:0103-8478
DOI:10.1590/0103-8478cr20190942