X-ray picture of normal uterine it depends on the tone of muscles and body position. Normal uterine cavity resembles an isosceles triangle. At the top of the triangle cavity cancer confined anatomic inner throat. The base of the triangle is the bottom of the uterus, side — her ribs. And the base of the triangle, and the sides of his somewhat involved in cavity uterus (SA Reinberg, O. Arnshtam, 1926). Data from SK Barutchevym (1950) and EA Semenova (1952) showed that the higher the tone of the uterus, the more pronounced Inverted bottom and edges of its triangular shadow. Under the influence of progesterone is a relaxation of the uterine muscles, and estrogenic hormones cause an increase in their tone. Therefore, the shape of the uterus undergoes changes during the menstrual cycle.
At both ends of the line is the bottom of the triangular shadow of the uterus, the latter distinguished corners — uterine horns, which are the mouths of the Fallopian tubes. The uterine horns are well expressed in cases where under the influence of estrogen increases the tone of the muscles of the uterus.
As observed BR Ginsburg and F. I string (1927), by the triangular shadow of the uterus of 3.5 cm Triangle is isosceles when the plane parallel to the plane of the uterus x-ray film. Various folds of the uterus on radiographs cause shortening the height of the triangle and the latter takes the form of squeezed triangle. And the more shortened height of the triangle, the more pronounced bending of the uterus. Thus, the situation is relatively rare cancer affects its transverse dimension, and it is relatively constant-3 ,6-4, 3 cm (SA Reyberg, OI Arnshtam, 1926).
In the first phase of the menstrual cycle, the shadow boundaries uterine smooth, homogeneous shadow. Due to hyperplasia of the mucous in the second phase of the menstrual cycle, the shadow boundaries can be somewhat wavy, and the shadow inhomogeneous.