Estudo imaginológico do esqueleto axial e dos órgãos celomáticos dos répteis Squamatas: atlas de anatomia topográfica
Data
2022-09-27
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Universidade Estadual Paulista (Unesp)
Resumo
A interpretação dos exames de diagnóstico por imagem em répteis é ainda considerada um desafio para muitos, tornando necessário o conhecimento das peculiaridades anatômicas e fisiopatológicas de cada espécie, além da necessidade de extrapolação de informações oriunda dos animais domésticos. Portanto, o objetivo desse estudo foi realizar exames de diagnóstico por imagem em repteis da ordem Squamata a fim de descrever a topografia e características dos órgãos. Exames tomográficos e radiográficos de serpentes (Boa constrictor e Piton molurus) e lagartos (Salvator merianae e Iguana iguana) saudáveis, foram realizados para avaliação do trato respiratório inferior. Nas serpentes, o pulmão direito foi maior, com o esquerdo variando de tamanho entre as duas espécies, sendo mais desenvolvido em Pitons molurus. Os lagartos apresentaram o pulmão esquerdo maior em relação ao direito, com diferença na conformação entre Salvator merianae e Iguana iguana. Foi realizada também a análise descritiva das imagens ultrassonográficas do fígado e da vesícula biliar de serpentes (Boa constrictor, Python molurus, Epicrates crassus) e lagartos (Iguana iguana, Salvator marianae, e Eublepharis mucularius). Nas serpentes foi identificado um lobo hepático alongado com parênquima pouco granulado e levemente hipoecogênico, com a veia cava caudal localizada em aspecto central. A vesícula biliar está localizada distante do fígado, com formato ovalado, conteúdo anecogênico homogêneo em lúmen, paredes finas e regulares. Nos lagartos, foi observado a porção direita do fígado maior que a esquerda, parênquima de ecotextura grosseira e hipoecogênico. A vesícula biliar estava localizada no aspecto direito do fígado, com formato ovalado na maioria das espécies e conteúdo anecogênico homogêneo em lúmen, paredes finas e regulares.
The interpretation of diagnostic imaging tests in reptiles is still considered a challenge for many, making it necessary to know the anatomical and pathophysiological peculiarities of each species, in addition to the need to extrapolate information from domestic animals. Therefore, the aim of this study was to perform diagnostic imaging tests in reptiles of the order Squamata in order to describe the topography and characteristics of the organs. Tomographic and radiographic examinations of healthy snakes (Boa constrictor and Piton molurus) and lizards (Salvator merianae and Iguana iguana) were performed to evaluate the lower respiratory tract. In snakes, the right lung was larger, with the left lung varying in size between the two species, being more developed in Pitons molurus. The lizards had a larger left lung compared to the right one, with a difference in conformation between Salvator merianae and Iguana iguana. A descriptive analysis of the ultrasound images of the liver and gallbladder of snakes (Boa constrictor, Python molurus, Epicrates crassus) and lizards (Iguana iguana, Salvator marianae, and Eublepharis mucularius) was also performed. In snakes, an elongated hepatic lobe with little granulated and slightly hypoechogenic parenchyma was identified, with the caudal vena cava centrally located. The gallbladder is located distant from the liver, with an oval shape, homogeneous anechoic content in lumen, thin and regular walls. In lizards, the right portion of the liver was larger than the left, with a coarse and hypoechogenic echotexture parenchyma. The gallbladder was located on the right aspect of the liver, with an oval shape in most species and homogeneous anechoic content in lumen, thin and regular walls.
The interpretation of diagnostic imaging tests in reptiles is still considered a challenge for many, making it necessary to know the anatomical and pathophysiological peculiarities of each species, in addition to the need to extrapolate information from domestic animals. Therefore, the aim of this study was to perform diagnostic imaging tests in reptiles of the order Squamata in order to describe the topography and characteristics of the organs. Tomographic and radiographic examinations of healthy snakes (Boa constrictor and Piton molurus) and lizards (Salvator merianae and Iguana iguana) were performed to evaluate the lower respiratory tract. In snakes, the right lung was larger, with the left lung varying in size between the two species, being more developed in Pitons molurus. The lizards had a larger left lung compared to the right one, with a difference in conformation between Salvator merianae and Iguana iguana. A descriptive analysis of the ultrasound images of the liver and gallbladder of snakes (Boa constrictor, Python molurus, Epicrates crassus) and lizards (Iguana iguana, Salvator marianae, and Eublepharis mucularius) was also performed. In snakes, an elongated hepatic lobe with little granulated and slightly hypoechogenic parenchyma was identified, with the caudal vena cava centrally located. The gallbladder is located distant from the liver, with an oval shape, homogeneous anechoic content in lumen, thin and regular walls. In lizards, the right portion of the liver was larger than the left, with a coarse and hypoechogenic echotexture parenchyma. The gallbladder was located on the right aspect of the liver, with an oval shape in most species and homogeneous anechoic content in lumen, thin and regular walls.
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Palavras-chave
Radiografia, Tomografia computadorizada, Ultrassonografia, Serpentes, Lagartos