[Carcinoma of the upper respiratory and digestive tracts. Histopathology and chemotherapy in 300 cases (author's transl)].

The pathological review of 300 larynx hypopharynx and pyriform sinus carcinoma was done systematically. The results expressed according to the absence or the type of chemotherapy (Bleomycine alone or O.M.B. association) are analysed. There is no difference for the epithelial proliferation but the collagenous part of stroma was enhanced by therapeutic. The foreign body granulomas are related to the tumor maturation (keratinization).