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An adult Dorper ewe was presented to the Large Animal Clinic with dystocia. Reddish masses were seen hanging from the vulva of the ewe. Vaginalexamination revealed a deformed fetus in the pelvic cavity that left insufficient room for fetal manipulation. A tentative diagnosis of dystocia due to fetal deformity was made. The dystocia was relieved by cesarean section and a case of true schistosomus reflexus in a lamb was confirmed from physical examination of the defective fetus.
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Tsuma et al. (2009) studied this question.
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