The relationship of the adenomyosis characteristics and the phases of the estrus cycle in 61 cows bovine’s uteruses collected in slaughterhouses was studied. The adenomyoses were classified as superficial and deep. The morphology, staining and vascularization of the corpus luteum and the presence or not of larger ovarian follicles than 8mm helped to estimate tthe estrus cycle. The cows in anestrus (n=11) showed the least occurrence of adenomyosis (8.2%) and the animals in the medium luteal phase (n=21) the largest one(31,0%). In the initial luteal phase (n=13) and the follicular phase (n=16) the occurrences of adenomyosis were similar and equals to 18.0 and 22.9%, respectively. The largests percentage of deep adenomyosis were found in the initial and in the medium luteal phases, 45.0 and 47.4%, respectively, and during the anestrus and the follicular phase they were 20.0 and 14.3%, respectively. The data suggest that the cycle phase influences in adenomyosis occurrence and in the degree of miometrial infiltration of the endometrial glands.
bovine; adenomyosis; estrous cycle; histopathology
