A 70- year-old smokers presents with a 3-month h/o dysphagia and weight loss. Flexible nasoendoscopy shows pooling of saliva in the pyriform fossae, with restricted mobility of the right hemi-larynx. Malignancy is suspected. At surgery, you find that he has a 3 cm tumour affecting the right pyriform fossa and extending into post-cricoid region. According to the TMN staging, what T- stage is this malignancy?

TNM STAGING OF HYPOPHARYNX CARCINOMA T Stage Description T1 Limited to 1 subsite of the hypopharynx and <=2 cm in greatest dimension T2 Tumour invades more than 1 subsite of the hypopharynx or an adjacent site, or measures >2 cm but <=4 cm in greatest without fixation of hemi larynx T3 Tumour measures >4 cm in greatest dimension or with fixation of hemi larynx or with extension to the oesophagus (5P - Pharynx, paralysis of vocal cord , perichondritis, pre- epiglottic space, para -glottic space) T4a Tumour invades Tongue, Trachea, Thyroid muscles of neck T4b Tumour invades preveebral fascia, encases carotid aery, or involves mediastinal structures