A rare diaphragm in the common carotid artery: A first case report and literature review

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We present a case of common carotid artery (CCA) diaphragm. To our knowledge, this is the first reported case in the imaging literature.

Patient concerns:

A 33-year-old woman presented herself to an annual health examination without any report of ill health.


A stenosis with aneurysm dilation on the proximal part of the right CCA was revealed on ultrasound and CTA, by which a diaphragm-like structure on the stenosis lesion was clearly identified. An anatomic variant of artery was first considered.


The patient was followed up closely.


There was no progression of her CCA stonosis 1 year later.


This unusual and previously unreported case is presented to alert vascular sonographers and radiologists to its existence.

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