A case of mycotic placentitis with abortion in a mare in the 7th month of gestation is described. Gross changes included an underdeveloped fetus, patch whitish areas in the placenta and thickenning of the allantochorion. In the fetal lungs there were nodules of 1 cm diameter. Histopathological changes consisted mainly of necrosupurative placentitis with multifocal mineralization on the placenta and thrombosis with focal supurative inflamation in the fetal lung. Branching, septaded fungal hyphae could be demonstrated in the placental lesions and in the lungs of the fetus. Aspergillus fumigatus was isolated from the placental lesions. Diagnosis was based on the histopathology and isolation of the agent.
abortion; equine diseases; mycotic placentitis; Aspergillus fumigatus
