Types
1. Post-Cricoid Carcinoma
2. Cancer Pyriform Fossa
Hypopharynx: Primary Tumor (T)
-
T0: No evidence of primary tumor
-
Tis: Carcinoma in situ
-
T1: Tumor limited to 1 subsite of the hypopharynx and/or ≤2 cm in greatest dimension
-
T2: Tumor invades more than 1 subsite of the hypopharynx or an adjacent site or measures >2 cm but not more than 4 cm in greatest dimension, without fixation of the hemilarynx
-
T3: Tumor >4 cm in greatest dimension or with fixation of the hemilarynx or extension to the esophagus
-
T4a: Moderately advanced, local disease Tumor invades thyroid/cricoid cartilage, hyoid bone, or central compartment soft tissue (including prelaryngeal strap muscles and subcutaneous fat)
-
T4b: Very advanced, local disease Tumor invades prevertebral fascia, encases carotid artery, or involves mediastinal structures