Horner syndrome following thyroid surgery: The clinical and
A 29-year-old male was referred to our emergency ward due to new-onset anisocoria and unilateral ptosis. One week before, he had undergone a total thyroidectomy under general anesthesia for a thyroid nodule (papillary carcinoma TIR 5; based on five-tiered system of classification of thyroid lesions) detected in the right lobe of his thyroid gland. The patient reported the onset of ocular signs and symptoms immediately after waking up from anesthesia. Ophthalmologic examination revealed a 3 mm right upper eyelid ptosis without anhydrosis and any evidences of vascular dilatation of the face. In dim illumination, the right and left pupils measured 3 and 6 mm, respectively. In bright illumination, the amount of anisocoria decreased. The near pupillary reaction was intact. A complete neurological examination confirmed otherwise normal cranial nerves. Brain and neck magnetic resonance imaging and chest radiography were unremarkable.