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Case Reports
. 2023 Feb 27;18(5):1733-1737.
doi: 10.1016/j.radcr.2023.01.085. eCollection 2023 May.

Large intra-abdominal venous malformations in associated with inferior vena cava aneurysm

Tran Duc Hai  1 , Le Nhat Minh  1 , Nguyen Tri Dung  1 , Le Van Dung  1 , Cao Thien Tuong  1 , Le Van Phuoc  1
Affiliations
Case Reports

Large intra-abdominal venous malformations in associated with inferior vena cava aneurysm

Tran Duc Hai et al. Radiol Case Rep. .

Abstract

Intra-abdominal venous malformations and inferior vena cava aneurysms are rare and difficult to diagnose because of their nonspecific clinical symptoms. These vascular anomalies are important entities due to the risk of thrombosis or rupture. According to the classification of International Society for the Study of Vascular Anomalies, venous malformations are classified as low-flow vascular anomalies, showing absence of arterial and early venous enhancement and slow gradual filling with contrast on delayed venous imaging. Phleboliths related to thrombosis and calcifications, are the key finding of venous malformations. In this article, we report an exceptional case of large intra-abdominal venous malformations in associated with an inferior vena cava aneurysm.

Keywords: Inferior vena cava aneurysm; Venous malformations.

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Figures

Fig 1
Fig. 1
Large IVC aneurysm (A, dash circle) associated with dilated left renal veins (A, arrows) and left renal vein thrombosis (B, star). In addition, multifocal, lobulated, infiltrative, hypoattenuating lesions were also detected (B, arrowheads). IVC, inferior vena cava.
Fig 2
Fig. 2
The above lesions show inadequate enhancement on arterial phase (A) and gradually filling in with contrast on later phase (B).
Fig 3
Fig. 3
Phleboliths, the key finding of venous malformations, were demonstrated as multiple hypointense nodules on MRI, calcified nodules on CT and DSA images. CT, computed tomography; DSA, digital subtraction angiography; MRI, magnetic resonance imaging.
Fig 4
Fig. 4
DSA images clearly demonstrated a large IVC aneurysm and dilated left renal vein (A, B). The abdominal aorta was normal, no sign suggestive of an arteriovenous fistula was showed (C). DSA, digital subtraction angiography; IVC, inferior vena cava.
Fig 5
Fig. 5
On MRI study, large, infiltrated lesions were detected within the intraperitoneal and retroperitoneal space, which is hyperintense on T2W (A). On precontrast T1W, postcontrast arterial phase, venous phase, 3-min and 10-min images (B-F), these lesions were gradually filling in with Gd. MRI, magnetic resonance imaging; T1W, T1-weighted images; T2W, T2-weighted images.
See this image and copyright information in PMC

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