Azygos continuation of the caudal vena cava with segmental aneurysm, lung lobe torsion and pulmonary thromboembolism in a dog

Abstract

Key Clinical MessageThis case highlights the management and diagnostic evaluation of a dog with two individually rare conditions (lung lobe torsion and vena cava aneurysm) that ultimately resulted in fatal pulmonary thromboembolism.

Diagnostic imaging for the assessment of acquired abdominal vascular diseases in small animals: A pictorial review

“…The imaging features of abdominal congenital vascular malformations, such as congenital portosystemic shunts, arterioportal malformations, azygos continuation of the caudal vena cava with and without concomitant portosystemic shunt, retrocaval ureter, caudal vena cava duplication, and caudal vena cava and portal vein aplasia, have been well described . In addition, MDCT anatomical criteria have been established for the diagnosis and classification of arterio‐portal malformation and a systematic “step‐by‐step” approach has been proposed for the ultrasonographic diagnosis of portosystemic shunts …”

Dynamic Obstruction of an Anomalous Cavoazygos Vessel Associated with Interrupted Caudal Vena Cava in a Boxer Dog

“…Anomalies of the CVC are rarely diagnosed in veterinary medicine and are often incidentally found during investigations for concurrent disease, in routine laparotomy, or at necropsy. 4 , 5 , 6 , 7 , 8 , 9 In human medicine, interrupted inferior vena cava has a relatively rare prevalence of 0.6%-1.3%. 10 Similar to veterinary patients, diagnosis of this condition is most commonly incidental; however, it can be associated with systemic venous thrombosis.…”

Agenesia da veia cava caudal com drenagem pela veia ázigos em cão da raça Scott Terrier: relato de caso

“…A agenesia da veia cava caudal ocorre ainda na fase de desenvolvimento embrionário de homens e outros animais. Relatos de casos na área são escassos por se tratar de um achado incomum e ocasional durante a realização de exames de rotina que envolve a procura de outros distúrbios (Lockwood et al, 2018). Outro fator que leva a sua subnotificação é a ausência, na maioria dos casos, de sintomatologias relacionadas ao evento (Gensas et al, 2012).…”