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Chapter: Pathology: Breast Pathology

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Gynecomastia - Pathology

Gynecomastia is a unilateral or bilateral benign breast enlargement in a male.

GYNECOMASTIA

Gynecomastia is a unilateral or bilateral benign breast enlargement in a male. It is usually caused by an altered androgen-estrogen balance that favors estrogen effect. Microscopically, it is characterized by:

 

         Ductal epithelial hyperplasia

 

         Ductal elongation and branching

 

         Proliferation of periductal fibroblasts

 

         Increase in vascularity in the involved tissue

 

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