Author(s): Moniz Dionísio, Joana ; Blanco, Susana ; Fragata, Isabel R. ; Paiva Nunes, Ana ; de Sousa, Diana Aguiar
Date: 2025
Persistent ID: http://hdl.handle.net/10400.5/102458
Origin: Repositório da Universidade de Lisboa
Subject(s): Angiography; Aorta; Thoracic; Basilar artery; Stroke; Subclavian steal syndrome
A 52-year-old woman was admitted with acute onset of right hemispheric carotid syndrome. Computed tomography angiography revealed a right intracranial internal carotid artery occlusion and a thrombus at the aortic arch occluding the left subclavian artery. She had no palpable left radial pulse. No vertebral territory ischemia was documented. Angiography demonstrated a persistent primary trigeminal artery and a saccular aneurysm at the communicating segment of the left internal carotid artery (Figure 1). The persistent primary trigeminal artery, a rare primitive embryonic circulation remnant, connects the carotid and vertebrobasilar systems.
