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Gustatory rhinitis is a type of nonallergic, noninflammatory rhinitis. A high incidence of rhinorrhea, including gustatory rhinitis, is reported in patients with Parkinson's disease (PD). Herein, we report a case of gustatory rhinitis in a patient with a parkinsonian variant of multiple system atrophy (MSA-P). A 56-year-old man presented with gustatory rhinorrhea and bilateral copious nasal discharge while eating. Three years before visiting the ear, nose, and throat clinic, he developed Parkinsonism and was suspected of having MSA-P. He underwent posterior nasal neurectomy under endoscopic guidance, but it did not significantly reduce the rhinorrhea during eating. Pathological examination of the mucosa of the inferior turbinate demonstrated minimal inflammatory cellular infiltration. Severe (gustatory) rhinitis may also be a useful biomarker for the diagnosis of synucleinopathies, including PD and MSA, akin to anosmia, which is a well-known biomarker for the early diagnosis of PD. [ABSTRACT FROM AUTHOR]

Trigeminal schwannoma is a rare skull base tumor that can be managed in a variety of treatments including image observation, surgery, stereotactic radiosurgery, such as gamma knife radiosurgery (GKS), and combination of these. Endoscopic transnasal resection is very effective when the tumor is not invading far laterally, or the risk of cerebrospinal fluid (CSF) leak is estimated to be low. A 74-year-old man with a history of prostate cancer and diabetes presented with left oculomotor nerve palsy over a month. Magnetic resonance images (MRI) demonstrated a 25-mm mass in the left cavernous sinus protruding to the left orbit via the superior orbital fissure (Fig. 1). The patient underwent endoscopic transnasal surgery to decompress the mass. The surgery was uneventful, and postoperative MRI demonstrated satisfactory subtotal resection of the mass (Fig. 2). The final pathology returned as schwannoma. At 1-year follow-up, the tumor slowly enlarged, and the patient underwent GKS with a marginal dose of 14 Gy. At the last follow-up, 4 months after GKS, the tumor was stable. Unfortunately the patient deceased from the known prostate cancer. Endoscopic transnasal surgery was especially useful in this case, considering the preoperative known cancer state that management of this benign tumor did not ruin the quality of life of this patient while minimizing hospitalization, as achieving satisfactory tumor control with aid from postoperative GKS, minimizing complications. The link to the video can be found at: https://youtu.be/Q0Ugc2VFV4w. [ABSTRACT FROM AUTHOR]