喉鳞癌（LSCC）可在喉镜下活检确诊，但少数粘膜无异常表现的粘膜下型的诊断和分期却有困难。文献上曾有共24例记载，但均系声门上型，亦有其他上呼吸一消化道粘膜下型SCC的报道。如鼻咽、舌根、扁桃体部。发生原因不明，学说有：小的粘膜癌的内转、源自小诞腺管等，粘膜下型恶 Laryngeal squamous cell carcinoma (LSCC) can be diagnosed by laryngoscope biopsy, but there are some submucosal abnormalities without submucosal diagnosis and staging difficulties. There are a total of 24 documented in the literature, but all are supraglottic, there are other upper respiratory-gastrointestinal submucosal SCC reports. Such as the nasopharynx, tongue base, tonsil Department. The causes are unknown, the doctrine is: a small mucosal cancer in turn, from the Xylen tube, submucosal evil