Orbital Metastasis as a Presenting Feature of Carcinoma Thyroid

Orbital metastasis of systemic cancer is rare and has fascinated the attention of both oncologist and ophthalmologists ever since the first description of a case report by Horner in 1864. The clinical characteristics of tumors metastatic to the orbit are related to primary tumor biology, and vary substantially among various primary types. The common known primary sites include breast, lung, prostate, and melanoma. Carcinoma thyroid metastasizing to the orbit has been reported mainly in isolated case reports, the histological variant in a majority of the cases being follicular carcinoma. We report a rare case of a follicular variant of papillary thyroid carcinoma (FVPTC) that presented with metastasis to the orbit with intracranial and extracranial subcutaneous tissues at the time of diagnosis.