abnormal lactotroph morphology increased lactotroph cell number MP:0008331 MPheno.ontology greater number of an acidophilic cell of the anterior pituitary that produces prolactin increased epsilon-acidophil number increased lactotrope number increased lactotropic cell number increased mammotrope number increased mammotroph number increased mammotrophic cell number increased mammotropic cell number increased prolactin secreting cell number lactotrope hyperplasia lactotroph cell hyperplasia lactotroph hyperplasia