Survival of patients with thyroid papillary and follicular carcinoma: similarity and difference of prognostic factors (cohort retrospective study).

Abstract

A retrospective study has been carried out on the cohort of patients, which were operated because of differentiated thyroid cancers in 1994-2014. The studies were conducted in the clinic of the Institute of Endocrinology, in addition, data from the National Cancer Registry was used. The cohort includes 5,346 patients; among them there are 4,346 women and 1,000 men, their age being from 10 to 84 years (average age 40.9±9.1 years); the PTC diagnosis was made for 4,818 patients, 528 persons were with the FTC diagnosis. The tumor classification was realized according to the 7 th version of the TNM Classification. The information of patients (age and sex, histological type, size and categories of carcinomas, their invasive properties, the presence of multifocal growth), as well as the clinical characteristics of the disease (stage, volume of surgical intervention and radioiodine treatment, risk of