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Background: Pseudoaneurysms of the Superficial Temporal Artery (STA) are rare and originate in most cases posttraumatically, often in young to middle-aged men. A palpable pulsatile mass at the temporal region is present, and pulsations can be eliminated or reduced by proximal compression of the STA. Diagnosis is often confirmed by duplex-sonography. Methods: Between 2006 and 2016, five patients with a palpable pulsatile mass of the forehead presented at our institution. Case history, clinical, technical and histopathological patient data and corresponding treatment is presented and compared with current literature on pseudoaneurysms of the STA. Results: In four cases the pulsatile mass was caused by a trauma, while in one case the mass arised spontaneously. Clinical examination revealed a palpable pulsatile mass on the forehead. The pulsatile quality of all tumors disappeared by unilateral compression of the STA. Duplex-sonography revealed a traumatic pseudoaneurysm in four cases and an arteriovenous (AV) malformation in one case. A resection of the pseudoaneurysms and AV malformation was performed. Histopathological examination confirmed the clinical diag-

Palpable Pulsatile Mass of the Forehead: A Case Series of Superficial Temporal Artery Pseudoaneurysms