Horner Syndrome Secondary to Metastatic Squamous Cell Carcinoma in the Neck: A Case Series

Background: Horner syndrome caused by metastatic squamous cell carcinoma of the head and neck is not common, and when diagnosed, may have serious clinical implications. We aim at highlighting the clinical significance of this finding. Methods: We retrospectively reviewed charts of 6 patients with Horner syndrome secondary to metastatic head and neck squamous cell carcinoma (HNSCC) in the neck. Results: All 6 patients had pathologically confirmed...