Purpose To present an example of how close clinical monitoring of a patient with acute Horner syndrome from carotid artery dissection may be critical in reversing neurologic dysfunction. Observations A patient whose initial neuro-ophthalmic manifestation was Horner syndrome, but who evolved over 14 days to display transient monocular vision loss, ipsilateral ocular ischemic syndrome, and epis...

Horner syndrome is a facial triad of miosis, ptosis, and anhidrosis. It is produced by a lesion of the sympathetic pathway supplying the head, eye, and neck. Causes range from benign to serious. Epidural anesthesia is widely used during obstetrics and general surgery. Although generally a safe procedure, it can cause neurologic and ophthalmologic complications. We report a case of unilateral Ho...

Horner syndrome consists of unilateral ptosis, an ipsilateral miotic but normally reactive pupil, and in some cases, ipsilateral facial anhidrosis, all resulting from damage to the ipsilateral oculosympathetic pathway. Herein, we review the clinical signs and symptoms that can aid in the diagnosis and localization of a Horner syndrome as well as the causes of the condition. We emphasize that ph...

An 82-year-old patient presented a progressively growing hard thyroid nodule, and left ptosis. Additionally, ophthalmologic evaluation revealed ipsilateral miosis, diagnostic findings of Horner syndrome. Computerized tomography revealed a 7.5-cm thyroid mass infiltrating the main neck vessels. Although clinical and imaging data were suggestive of poorly differentiated thyroid carcinoma, fine-ne...

BACKGROUND AND PURPOSE Isolated Horner syndrome without associated cranial nerve palsies or ischemic symptoms is an important presentation of spontaneous internal carotid artery dissection (sICAD). Ultrasound is often used as a screening method in these patients because cervical MRI is not always available on an emergency basis. Current knowledge on ultrasound findings in patients with sICAD pr...

Claude Bernard-Horner syndrome presents various etiologies and occurs as the direct result of interrupted nerve signaling at any point along the nerve trajectory, be it intrathoracic or extrathoracic. Herein, we report a case of Claude Bernard-Horner syndrome caused by loculated pleural empyema located in the paravertebral region of the upper third of the right hemithorax. The patient was submi...