第四級外科病理，複雜性Surgical pathology Level IV
right pyriform sinus tumor;
Larynx, pyriform sinus, right, LMS, squamous cell carcinoma, well differentiated and stroma invasion
The specimen submitted consists of three tissue fragments measuring
up to 0.6*0.4*0.3 cm. in size fixed in formalin.
Grossly,they are tan and soft.
All for section. Jar 0
Microscopically, it shows a picture of aquamous cell carcinoma, well differentiated of pyriform sinus with stroma invasion. No lymphovasculare permeation is observed.