Glottic Throat Cancer
Throat cancer types
According to locations associated with glottis, throat cancers can be divided into supraglottic throat cancer, subglottic throat cancer, and glottic throat cancer - vocal cord carcinoma in the area of the glottis.
Glottic throat cancer
Throat cancer originated in the vocal cords are the most common throat cancer, 50~60 percent. Due to its typical throat cancer symptoms, this type of throat cancer is usually detected early. The elasticity of the vocal cords is limited, and the voice hoarse is thereby constantly.
The vocal cord carcinoma is often located in one side of the vocal cords, but involving the contralateral vocal cord in late stage. With small, limited throat cancer on the vocal cords, the risk of lymph node metastases is very low. But if the cancer spreads to the adjacent regions of the throat, the vocal cord carcinoma can also grow to the the supraglottic or subglottic area.
Most patients have hoarseness in early stage, and the hoarseness can be mild to severe, gradually worsened. It is an important early warning sign of throat cancer, especially lasting for two weeks. Throat cancer position in the vocal cords produces a greater impact on hoarseness than the throat cancer size. The hoarseness is more prominent if the throat cancer in the vocal cords edge than located in the center of the vocal cords; Even throat cancer is very small.
With the development of throat cancer, patients have laryngeal stridor (a high-pitched crowing sound) and difficulty in breathing. If left untreated, it can cause suffocation. Patients may also have a cough and bloody sputum.
Due to vocal cords lacking lymphatic vessels, Lymph node metastasis often does not occur until late stage. The vocal cord carcinoma prognosis is good. In addition, the glottis cancer is low malignant.