abnormal sebaceous gland morphology abnormal male preputial gland morphology MP:0002717 MPheno.ontology abnormal Tyson's glands abnormal preputial gland morphology abnormal preputial glands any structural anomaly of the paired, lobulated, modified sebaceous glands of the corona, the neck of the glans penis, and the inner surface of the prepuce with pheromonal functions in male rodents; male preputial secretions strongly attract females, may accelerate estrus, and have been implicated in intermale aggression; homologous to the clitoral glands (aka female preputial glands) in female rodents; there is no true anatomical equivalent in humans preputial gland dysplasia abnormal glans penis morphology abnormal male reproductive gland morphology abnormal preputial gland morphology