[Pathomorphosis of laryngeal cancer after neutron and gamma-neutron therapy using fast neutrons of the reactor].

Studies of tumours and adjacent tissue were carried out in 29 patients with carcinoma of the larynx after preoperative irradiation with fast neurons at a total focal dose 5.6 Gy alone or in combination with gamma therapy. Pronounced pathomorphosis was established in all the cases, up to a full disappearance of the tumor in 2 patients, the degree of pathomorphosis did not depend on location, macroscopic form of growth, degree of dissemination. No changes were found in the wall of the larynx outside the tumor.