Cystic Degeneration of the Ovaries 



167 



conamonly iu a different degree. Not infrequently one observes in 

 an ovary, both superficially and deeply, one to four cysts ; in other 

 cases, one large cyst. Ov aries containing two to three lar^e and 

 twojtojoux-a mall eysta ■ a rre— by— ho- .iii&ans rare. While, under 

 normal conditions, the ovary of the cow varies in size between a 

 bean and a large hazelnut, th e gland which is gffpftpH yith pys tiV 



degeneratiou^shovy,?, apon-ii^s— nQAiiJju;^..si.ixf.a.g&, -iraryifig nnrnhprs; 



of steiraTe, radiating o r linear srars The special position of the 

 cysts, which always develop from the follicles, is the stratum par- 

 enchymatosum and especially the stratum vasculosum. In the 

 former, the location of the cyst is more superficial or peripheral, 

 while, in the latter, it is central, The^vsts,-u&ttallv _with smoo th 

 walls, are found located^ as a., rulej_at^the_iiiferior--o*-s«^erio 

 pol &-afT5e'o"varv or .occun simultanfiOusLy iiL bolk.positions. and, 

 generally 3 mm. from the mesovarian or ligamentous border and 

 i-io mm. from the free border. Cysts also occur imediately upon 

 the free border, especially in the middle of the organ. It is, 

 moreover, quite common to find in the center of the ovary, one 



Fig. 16. NoRMAi, AND Cystic Ovaries of Cow. 



A, B, B', Cystic ovaries, 



B', Section of B, showing it to consist of two large cysts and one 



corpus luteum with no visible ovarian tissue. 

 C, Section of the normal ovary, D, showing ovisacs and one corpus 



luteum. One-half size. 



