Outflow-Restricted Developmental Venous Anomaly Masquerading as a Tumefactive Lesion on Imaging
Related Experiment Video
Updated: Dec 20, 2025

A Patient-Derived Xenograft Model for Venous Malformation
Published on: June 15, 2020
Priyanka Priyadarshini Baishya1, Vivek Lanka1, Karthik Kulanthaivelu1
1Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India.
Background:
Developmental venous anomalies (DVA) are rarely symptomatic. We report an unusual case of outflow-restricted DVA presenting with seizures.
Case Description:
Expansile signal changes due to a hemorrhagic venous infarction in the draining territory of collector vein of DVA simulated a neoplasm. Follow-up imaging showed regression of mass effect and asymptomatic thrombosis of another distant vein. Investigation for prothrombotic conditions returned negative.
Conclusions:
Atypical imaging findings in the draining territory of DVA ought to raise the possibility of outflow restriction.
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