Dynamic 3D-CT angiography during swallowing for diagnosing hyoid bone or thyroid cartilage compression-induced thromboembolism

Yoshitaka Yamaguchi; Akira Saito; Yu Ohsawa; Hikaru Nagasawa; Manabu Wada

doi:10.1016/j.radcr.2020.06.016

Dynamic 3D-CT angiography during swallowing for diagnosing hyoid bone or thyroid cartilage compression-induced thromboembolism

Radiol Case Rep. 2020 Jul 3;15(9):1468-1472. doi: 10.1016/j.radcr.2020.06.016. eCollection 2020 Sep.

Authors

Yoshitaka Yamaguchi¹, Akira Saito², Yu Ohsawa³, Hikaru Nagasawa¹, Manabu Wada¹

Affiliations

¹ Department of Neurology, Yamagata Prefectural Central Hospital, 1800 Aoyagi, Yamagata 990-2292, Japan.
² Department of Radiology, Yamagata Prefectural Central Hospital, 1800 Aoyagi, Yamagata 990-2292, Japan.
³ Department of Otolaryngology-Head and Neck Surgery, Yamagata Prefectural Central Hospital, 1800 Aoyagi, Yamagata 990-2292, Japan.

Abstract

A 76-year-old man was admitted because of visual loss in his right eye, and was diagnosed with central retinal artery occlusion. Brain MRI revealed asymptomatic acute infarctions in the right middle cerebral artery territory. The proximal right internal carotid artery had migrated into a retropharyngeal location, presenting a 50% stenosis with calcified plaques, and was compressed by the hyoid bone and thyroid cartilage during swallowing on dynamic 3D-CT angiography. Partial resection of the hyoid bone and thyroid cartilage was performed and the postoperative course was uneventful. This case supports the utility of dynamic 3D-CT angiography during swallowing for diagnosing hyoid bone or thyroid cartilage compression-induced thromboembolism.

Keywords: Central retinal artery occlusion; Dynamic 3D-CT angiography; Hyoid bone; Ischemic stroke; Thyroid cartilage.

Publication types

Case Reports