Aspectos radiográficos e tomográficos de felinos (Felis catus - Linnaeus, 1775) adultos acometidos por rinite e sinusite
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Data
2007-07-25
Autores
Zanatta, Rosana [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
Doenças sinonasais são comuns em pequenos animais, todavia o diagnóstico definitivo é difícil de ser estabelecido pela similaridade dos sinais clínicos das enfermidades que acometem a cavidade nasal e os seios paranasais, além da limitação dos métodos de diagnóstico. A imagem adquirida com a radiografia apresenta sobreposição de estruturas anatômicas. A tomografia computadorizada (TC) permite o estudo do corpo em planos, onde as estruturas internas podem ser visibilizadas diretamente. Estudos em que foram comparadas as imagens radiográficas e de TC da cabeça de gatos, em sua maioria, confrontaram dados de tomografias arquivadas com achados radiográficos de exames feitos em grupos distintos de animais. Com este estudo objetivou-se descrever os achados radiográficos e tomográficos de imagens obtidas da cabeça de um grupo de dez gatos mestiços, adultos, com sinais clínicos crônicos de rinite e sinusite. As alterações visibilizadas nas imagens radiográficas e de TC foram aumento de opacidade dos seios frontais e da cavidade nasal e envolvimento de estruturas extra sinonasais. Foram observados ainda nas imagens de TC desvio do septo nasal e destruição de turbinados nasais e de ossos da face. O reduzido comprimento facial do gato, associado à sobreposição de tecidos que ocorre nas radiografias de cabeça, limitam a avaliação da cavidade nasal, seios frontais e bulas timpânicas. Entretanto, o conhecimento anatomoradiográfico da cabeça permite identificar a maioria das alterações encontradas no exame de TC.
Sinonasal diseases are common in small animals, however is difficult to establish a definitive diagnosis due clinical signals are similar in different diseases of nasal cavity and paranasal sinuses and the diagnostic methods are limited. The image acquired with the radiographic presents overlapping of anatomical structures. Computed tomography (CT) is a technique that allows the study of the body in slices, generating images without overlapping of anatomical structures. Studies have compared radiographic and CT images of feline head, however radiographic and CT images were acquire to different groups of animals. The aim of this study was to describe the aspects of radiographic and tomographic images acquired to the head of a group of ten adults mixed-breed mixed-breed cats, with chronic signals of rhinitis and sinusitis. The findings in radiographic and CT images in this study were opacification of frontal sinuses and nasal cavity, and extrasinonasal involvement. In CT, were observed nasal septal deviation, turbinate destruction and nasal bony changes. The small facial length of the cat, associated with tissue superimposition that commonly occurs in head radiographs, restrict nasal cavity, frontal sinus and timpanic bullae evaluation. However, the anatomoradiographic knowledge of the head allows the identification of most alterations found at CT examination.
Sinonasal diseases are common in small animals, however is difficult to establish a definitive diagnosis due clinical signals are similar in different diseases of nasal cavity and paranasal sinuses and the diagnostic methods are limited. The image acquired with the radiographic presents overlapping of anatomical structures. Computed tomography (CT) is a technique that allows the study of the body in slices, generating images without overlapping of anatomical structures. Studies have compared radiographic and CT images of feline head, however radiographic and CT images were acquire to different groups of animals. The aim of this study was to describe the aspects of radiographic and tomographic images acquired to the head of a group of ten adults mixed-breed mixed-breed cats, with chronic signals of rhinitis and sinusitis. The findings in radiographic and CT images in this study were opacification of frontal sinuses and nasal cavity, and extrasinonasal involvement. In CT, were observed nasal septal deviation, turbinate destruction and nasal bony changes. The small facial length of the cat, associated with tissue superimposition that commonly occurs in head radiographs, restrict nasal cavity, frontal sinus and timpanic bullae evaluation. However, the anatomoradiographic knowledge of the head allows the identification of most alterations found at CT examination.
Descrição
Palavras-chave
Radiografia, Tomografia, Gatos - Doenças sinonasais, Radiography, Computed tomography, Cat, Sinonasal disease
Como citar
ZANATTA, Rosana. Aspectos radiográficos e tomográficos de felinos (Felis catus - Linnaeus, 1775) adultos acometidos por rinite e sinusite. 2007. xi, 39 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2007.