DISTORTION OF THE SPIRAL ARTERY IN THE OVARY ASSOCIATED WITH CORPUS HEMORRHAGICUM CYSTS

Abstract

Corpus hemorrhagicum cysts were induced in the ovaries of rabbits by injn. of gonado-trophins. Injection-corrosion prepns. of the vessels, using vinylite as the injn.-mass, were studied by means of stereoscopic pictures. In contrast to the normal pattern of adaptation of the spiral artery to ovarian growth in which there is relatively even paying out of the coils, distortion of localized portions of the artery was observed in the vicinity of corpus hemorrhagicum cysts. The cysts were distal to the distorted part of the spiral artery. It is suggested that distortion of the spiral artery may contribute to development of the cysts through the mechanism of transmission of too great a local pressure of blood during the growth phase of the follicle under stimulation of gonadotrophins.