GLMNcausing vascular malformations: the clinical and genetic differentiation of cutaneous venous malformations

Author:

McMahon Mollie Helena,Tahir Nasim,Balasubramanian Meena

Abstract

Cutaneous venous malformations frequently present with blue-pink lesions on the skin or mucosal surfaces. They can be problematic for patients who experience pain or unsightly lesions and can also be associated with significant bleeding. A proportion of venous malformations have been noted to occur in families, in particular glomuvenous malformations (GVMs). A ‘two-hit’ occurrence of genetic pathogenic variants appears to explain the appearance of GVMs, with the initial change in the germline copy ofGLMNfollowed by a second somatic hit. Here we discuss a report of siblings experiencing such lesions, which were diagnosed as GVMs by genetic testing. We include a review of the literature regarding the clinical and genetic differences between these groups of venous malformations.

Publisher

BMJ

Subject

General Medicine

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