Primary Sino-nasal Neuroendocrine Carcinoma: A Rare Tumor

Abstract

License CC-BY 3.0., which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Abstract Primary sino-nasal neuroendocrine carcinomas (PSNNECs) are rare, with a wide spectrum of histological differentiation. Advanced tumors may invade the surrounding structures, such as the skull base, orbit, or brain. Here, we present a rare case of PSNNEC and its management by concurrent chemoradiation (CCRT) followed by adjuvant chemotherapy with the radiological resolution of the tumor mass.