breast hypoplasia http://purl.bioontology.org/ontology/MEDDRA/10049070 http://purl.obolibrary.org/obo/HP_0003187 http://purl.obolibrary.org/obo/NCIT_C78222 Hypoplasia of the breasts. Underdevelopment of the breast. aplasia/hypoplasia of the breasts bilateral breast hypoplasia unilateral breast hypoplasia hypoplasia breast