Hypoglossal Nerve Palsy As an Initial Presentation of Glomus Jugulare Tumor in Patient with Breast Cancer: A Case Report and Literature Review

Background: Glomus jugulare tumor is a rare, slow-growing, hyper-vascular paraganglioma that originates from the neural crest derivatives in the wall of the jugular bulb. The most common clinical manifestations of glomus jugulare are pulsatile tinnitus, conductive hearing loss, and hoarseness due to its vascularity and invasion of surrounding structures. Isolated hypoglossal nerve palsy as a presenting feature of the glomus jugulare is very rare. Case Report: We report a 61-year-old woman with a past medical history of breast cancer and diabetic mellitus presenting with progressive difficulty handling food in her mouth and tongue atrophy. Investigations showed skull base lesion and solitary pulmonary nodule. Further work-up led to glomus jugulare and benign solitary pulmonary fibrous tumor diagnosis, although the first impression was metastatic involvement of the jugular foramen. Endovascular embolization of the glomus jugulare was performed, but the patient refused any open surgery due to co-morbidities and the risk of operation. She had no new symptoms at the one-year follow-up, and the size of the lesion became more minor on the follow-up imaging relative to the baseline. Conclusion: Glomus jugulare tumors should be considered and surveyed in the diagnostic work-up of patients with hypoglossal nerve palsy. [GMJ.2021;10:e2222]