Introduction:

leptospirosis in Cuba occurs endemically, and sometimes epidemically, making it a health problem. Its effect on internal genitalia in pregnant women has been little treated by researchers.

Objective:

to describe the main alterations in the internal genitalia of pregnant Wistar rats infested by leptospiras.

Methods:

an experimental study was carried out in pregnant Wistar rats: 7 groups with three animals each: 1 negative control and 6 cases with doses of a bacterial concentration of 300 million Leptospira per mL; each animal was inoculated with two milliliters on the fourth day of pregnancy for 17 months. The internal genitalia of all rats were taken on day 20 of gestation, processed in kerosene and stained with hematoxylin/eosin.

Results:

alterations were observed in the uterus, ovaries and tubes; the greatest number of lesions was present in the uterus while the same number of lesions was visualized in the ovaries and tubes.

Conclusions:

leptospirosis infected the internal genitalia producing cysts, necrosis, abscesses, oophoritis and microhemorrhages in the ovaries; vascular congestion and hemorrhages in the uterine tubes and endometritis, hemorrhages, myometritis, pyometristis, perimetritis and vascular congestion in the uterus. Congestive and hemorrhagic alterations predominated.

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