“…Numerous reports regarding the treatment of early stage glottic cancer have evaluated some prognostic factors, i.e., tumor volume, stage, tumor kinetics including p53 status, histological differentiation, intrinsic radiosensitivity, continued smoking during and after RT and hypoxia, low hemoglobin levels, poorly differentiated tumors, dose per fraction, total dose, overall treatment time, field size, beam energy, radiation technique, and anterior commissure involvement [3,[16][17][18][19][20][21][22][23][24][25]. These factors were not constantly presented to have a prognostic influence by all authors.…”