Hemorrhagic Corpus Luteum 



413 



degeneration. Its precise nature has not been made clear. 

 The cystic corpus luteum is so generally associated with in- 

 fection as to suggest that the hemorrhage causing this path- 

 ologic type of corpus luteum may be due to atony in the 

 gland, referable to infection. At present it seems that as a 

 rule of practice it is best to dislodge such corpora lutea in 

 order that their inhibitory power may be destroyed and the 

 ovaries caused to resume their function. The veterinarian 

 should always be very careful, when dislodging such a cor- 

 pus luteum, to compress the crater for some minutes and 

 watch carefully for a brief period afterward to see that a 

 new hemorrhage is not established. At the same time due 

 attention should be given to other conditions existing within 



Fig. T31 — Hemorrhagic Corpus Luteum. 



the genital tract, because there is ordinarily a correlation 

 of these diseases and no one lesion should be treated as be- 

 ing wholly independent of other pathologic conditions which 

 may be present. 



6. Cystic Degeneration of the Corpus Luteum 



Probably the commonest disease of the ovary observed in 

 cattle is the cystic degeneration of the corpus luteum. At 

 the same time, although the condition has not been thor- 

 oughly studied, it is quite safe to say that it is one of the 

 most serious types of ovarian infection seen. Cystic de- 

 generation of the corpus luteum occurs very rarely in a 



