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Updated: Jun 26, 2026

A Patient-Derived Xenograft Model for Venous Malformation
Published on: June 15, 2020
Venous malformation of the neck with giant phleboliths
Tabassum Ahmed1, Gul Moonis, Laurie Loevner
1Department of Radiology, Mallinkrodt Institute of Radiology, Washington University School of Medicine, St. Louis, MO, USA.
Abstract:
We present a case involving a 76-year-old man with a massive right-sided vascular neck mass that had been present since birth. The mass had been stable throughout the patient's life, but recently a portion of it had become hard. Physical examination revealed a firm, palpable focus within the vascular lesion in the right side of the neck. Computed tomography revealed the presence of numerous hyperdense foci, many more than 2 cm in size, which were confirmed by fine-needle aspiration to be phleboliths. The patient was followed for 6 months to ensure that the vascular mass and phleboliths remained stable.
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