Abstract: | Thyroids of 185 males of different ages (from 17 to 75 years) were examined by histological and stereological methods. All persons died accidentally. Cases were not connected with endocrinological diseases. Maximum weight of organ (18.1 +/- 1.2 g) was at the age of 31-40 years. In all cases the thyroids were characterised by the large-follicular type of structure with a moderately pronounced colloid resorption and desquamation of thyrocytes. Statistically significant changes of nuclear volume and volume density of thyrocytes with age were found stereologically. It is concluded that the conditions of the European North influence the speed of the involutionary changes in the thyroid. |