Pterygopalatine Catecholamine-Secreting Paraganglioma: A Diagnostic and Therapeutic Challenge.

Paragangliomas are rare neuroendocrine tumors originating from the paraganglia. They are mostly benign, slow-growing, and non-secretory. This report describes a rare case of a catecholamine-secreting paraganglioma located in the pterygopalatine fossa.

A Rare Case Report of Malignant Peripheral Nerve Sheath Tumor in the Infratemporal Fossa.

Malignant peripheral nerve sheath tumors (MPNSTs) are rare tumors that develop from peripheral nerve sheath cells and they account for approximately 5% to 10% of all soft-tissue sarcomas. MPNSTs in the head and neck region represent approximately 2% to 6% of all head and neck sarcomas and account for 12% to 19% of all MPNSTs, and the infratemporal fossa is a rare site for MPNSTs. MPNSTs originating from the trigeminal nerve are extremely rare.