A rare case of Bannayan-Riley-Ruvalcaba syndrome with concurrent arteriovenous malformation.

Bannayan-Riley-Ruvalcaba syndrome (BRRS) is a congenital, autosomal-dominant disorder characterized by a triad of macrocephaly, lipomatosis, and pigmentation of the glans penis. The symptoms of this rare syndrome vary greatly and include multiple hamartomatous polyps, macrocephaly, increased birth weight, developmental delay, and intellectual disability. Vascular abnormalities, including arteriovenous malformations (AVMs), have rarely been reported as part of the vascular manifestations associated with BRRS. Congenital AVMs can rarely progress, resulting in limb- or life-threatening complications. We present the case of a young man with BRRS diagnosed in childhood and presenting with three AVMs involving the right upper extremity and chest. We also provide a brief literature summary of reported cases of BRRS with AVMs. Our paper highlights the importance of recognizing and understanding the vascular manifestations in patients with BRRS. Knowledge of the association between BRRS and AVMs is crucial for guiding patient diagnosis and management, optimizing treatment strategies, and improving overall patient outcomes.

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