abnormal mammary gland morphology abnormal mammary gland duct morphology MP:0009503 MPheno.ontology abnormal canalicular duct morphology abnormal ductus lactiferi morphology abnormal galactophore morphology abnormal galactophorus canal morphology abnormal galactophorus duct morphology abnormal lactiferous duct morphology abnormal mammary duct morphology abnormal mammilary duct morphology abnormal milk duct morphology abnormal tubuli galactophori morphology abnormal tubuli lactiferi any structural anomaly of the canals that lead from the lobes of the mammary gland to the tip of the nipple and are responsible for carrying milk toward the nipple in a lactating female