# A Sudden Unilateral Visual Field Loss in a Recreational Tennis Player: Cervical Internal Carotid Artery Dissection Associated With Low-Impact Sports

## TL;DR

A 56-year-old man developed a rare neck artery issue after playing tennis, leading to vision loss, and was successfully treated with medication.

## Contribution

This case highlights that low-impact sports like tennis can cause cervical internal carotid artery dissection without direct injury.

## Key findings

- A 56-year-old man experienced sudden visual field loss due to cervical internal carotid artery dissection during tennis.
- Antiplatelet therapy with prasugrel led to gradual resolution of the stenosis and successful recovery.
- Cervical internal carotid artery dissection should be considered in neurological symptoms even without direct injury.

## Abstract

Traumatic cervical internal carotid artery dissection (CICAD) is a rare condition caused by blunt trauma to the neck, often through automobile- or sports-related collisions, assaults, or falls. Herein, we report an unusual case in which engaging in a low-impact sport (tennis) caused CICAD, without a direct injury. A 56-year-old man with hypertension suddenly experienced a visual field loss in his right eye while playing tennis. Carotid echocardiography revealed severe stenosis of the right internal carotid artery (ICA). Angiography revealed severe and irregular stenosis of the right ICA from the bifurcation to the petrous portion, suggesting CICAD. Upon admission, the patient had left upper visual field defects in his right eye and neck pain. Antiplatelet therapy was initiated with prasugrel (3.75 mg/day), with the intent to treat surgically if the stenosis or symptoms progressed. Follow-up angiography and magnetic resonance imaging showed gradual resolution of the stenosis, and the patient was discharged on day 28 with a modified Rankin Scale score of 1. The CICAD should be considered as a diagnosis for neurological symptoms, even in the context of low-impact sports such as tennis. Antithrombotic therapy is a reasonable first-line treatment for stable CICAD.