|
Hypopharyngeal cancer is a disease in which malignant cells grow in the hypopharynx (the area where the larynx and esophagus meet).〔(National Cancer Institute. General Information About Hypopharyngeal Cancer )〕 It first forms in the outer layer (epithelium) of the hypopharynx (last part of the pharynx), which is split into three areas. Progression of the disease is defined by the spread of cancer into one or more areas and into deeper tissues.〔 This type of cancer is rare. Only about 2,500 cases are seen in the US each year.〔(WebMd. Hypopharyngeal Cancer Treatment )〕 Because of this, Hypopharyngeal Cancer is difficult to catch in its earliest stages and has one of the highest mortality rates of any head and neck cancer.〔(American Cancer Society. Detailed Guide: Laryngeal and Hypopharyngeal Cancer How Are Laryngeal and Hypopharyngeal Cancers Staged? )〕 ==Symptoms== Symptoms of Hypopharyngeal Cancer include: * Swollen lymph nodes in the neck (first sign of a problem in half of all patients) 〔(E Medicine. Hypopharyngeal Cancer: History. )〕 * Sore throat in one location that persists after treatment 〔 * Pain that radiates from the throat to the ears〔 * Difficult or painful swallowing (often leads to malnutrition and weight loss because of a refusal to eat)〔 * Voice changes (late stage cancer)〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hypopharyngeal cancer」の詳細全文を読む スポンサード リンク
|