Conclusion:
In conclusion, the differential diagnosis in a patient with hoarseness,
dyspnea, and subglottic mass must consist of neuroendocrine carcinomas.
Due to tumor rarity, pathological diagnosis should be confirmed by
immonohistochemistery. Irradiation and chemotherapy are recommended for
treatments in poorly differentiated NEC.This case report of poor
differentiated NEC and the corresponding literature review provide
useful insight for otolaryngologist to improve their knowledge in the
diagnosis and treatment of this aggressive neoplasm.