Spontaneous radial artery pseudoaneurysm in an infant due to idiopathic medial hypoplasia – a case report

Abstract Spontaneous pseudoaneurysms are uncommon vascular lesions in children. A seven-month-old boy presented for management of a painless, pulsatile mass of the volar forearm identified as a pseudoaneurysm of the radial artery on imaging, definitively treated with surgical excision. Histology was concerning for fibromuscular dysplasia, without additional lesions on whole-body imaging