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Breast Duct Growth

Process Reproductive

Growth of the duct tissue behind the nipple, driven by oestrogen and progesterone signalling. Once it has laid down glandular tissue it does not reliably regress.

Relationships

2 connections

Breast Duct Growth increases risk of

Gynecomastia

Glandular breast tissue growth in men. Two separate routes reach it, estrogen and prolactin, and treating the wrong one does nothing.

Breast Duct Growth stimulates

Breast Tissue

Responds to both estrogen and prolactin. Once glandular tissue forms it does not go away on its own, which is why this one is worth preventing rather than treating.