has part has part has_part characteristic of has modifier abnormal uterine horn morphology dilated uterine horn dilated metral horn MPheno.ontology dilated uterine horns an expansion in the volume or area of one or both of the pair of tubular extensions from the uterine body where the uterus and the uterine tubes meet, usually with an increase in contained fluid MP:0009087 uterine horn dilation dilated metral horns dilated cornu uteri abnormal dilated uterine horn