Clinical and diagnostic imaging findings in dogs with atrial appendage aneurysm: 7 cases (2014–2020)

Masson, Aurore Veronique; Maddox, Thomas W.; Bode, Elizabeth; Mortier, Jérémy

doi:10.1016/j.jvc.2021.03.002

Cited by 4 publications

(12 citation statements)

References 16 publications

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“…This is in accordance with the previously reported cases, in which a soft-tissue opacity in the cranial mediastinum, effacing the cranial aspect of the cardiac silhouette, was seen. [5][6][7][8] Echocardiographic findings in dogs of this study were also in accordance to the previously described appearance. [6][7][8] The location of the presumed RAA, if intra or extrapericardial, has not been here confirmed by necropsy or surgery due to the incidental nature of the condition and this might be a limitation of this study.…”

Section: Discussionsupporting

confidence: 90%

“…[5][6][7][8] Echocardiographic findings in dogs of this study were also in accordance to the previously described appearance. [6][7][8] The location of the presumed RAA, if intra or extrapericardial, has not been here confirmed by necropsy or surgery due to the incidental nature of the condition and this might be a limitation of this study. Other limitations include the availability of images from other modalities radiographs, US) only in a small percentage of the cases.…”

Section: Discussionsupporting

confidence: 90%

“…5 Thoracic CT showed an enlarged right atrial appendage with thin wall. 5,6,8 In one of these cases, post-mortem evaluation confirmed the presence of the suspected RAA. 6 Previous case reports in the literature described a large soft-tissue mass, connected with the right atrium, filled with contrast media and with thin walls.…”

mentioning

confidence: 80%

“…5 A recent paper described RAA in six dogs; two of these had heart murmur. 8 At thoracic radiographic examination, these dogs presented a soft-tissue opacity in the cranial mediastinum, effacing the cranial aspect of the cardiac silhouette. [5][6][7][8] Echocardiographic examination described in previous reports revealed the presence of an anechoic structure cranial to the right atrium in two cases 6,7 and severe right atrial enlargement in one other dog.…”

mentioning

confidence: 96%

“…i.e., the presence of an aneurysmatic dilation at the level of the right auricle. 8 The control group included dogs that underwent CT examination in the same timeframe for varying reasons, without evidence of RAA.…”

mentioning

confidence: 99%

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Right auricle aneurysm in dogs can be detected with multidetector‐row CT and presents with varying morphology

Costa

Cordella

Caldín

et al. 2022

Vet Radiology Ultrasound

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Right auricle aneurysm (RAA) has been reported to be a rare congenital or acquired condition in dogs, however published CT characteristics are limited to a small number of cases. The aim of this 13-year, single-center, retrospective, cross-sectional study was to describe the prevalence and appearance of RAA in a larger group of dogs.Reports of 10,886 dogs that underwent thoracic CT examination for various reasons were reviewed. Computed tomographic data of dogs with presumed RAA (based on published imaging characteristics) were retrieved from the archive. Oblique multiplanar reformatted images were used to record RAA site, shape, and dimensions (neck, maximum height and width). Patients' sex, age, and body weight were evaluated for any association with the presence of RAA. Presumed RAA was detected in 23/10,886 dogs having thoracic CT in the selected period of time (prevalence 0.21%). Three RAA phenotypes were described: diffuse saccular dilation in 19 of 23 dogs, focal saccular dilation in three of 23 dogs, and fusiform in one of 23 dogs. The bodyweights of dogs with presumed RAA were significantly lower than those of the remaining 10836 dogs without RAA (median 8 kg [IQR 5; range 37.6] and median 16 kg [IQR 23; range 116.9] respectively; P < 0.003. Female sex was also significantly associated with RAA (P = 0.03). Findings indicated that RAA has a low prevalence in dogs, can be detected with CT, can be present in asymptomatic dogs, and can have varying appearances. In this sample of dogs, female sex and low body weight were significantly associated with RAA.

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