[Nasopharyngeal atypical carcinoid misdiagnosed as a cyst:one case report].

Atypical carcinoid ,a kind of neuroendocrine tumor(NET)，rarely shows its malignant manifestations firstly in otorhinolaryngology including atypical clinical features of symptoms such as rapid tumor growth, extensive invasion, high rate of metastasis and poor prognosis. Based on the clinical data of a nasopharyngeal atypical carcinoid patient diagnosed and treated recently in our hospital,a literature review including its biological behavior, diagnosis and treatment methods was present so as to further improve the understanding of such kind of tumor.