sclerosing adenosis (fibrous adenosis)

Introduction

A nodular, benign lesion of the breast or prostate.

Epidemiology

• occurs frequently in relatively young women (breast)

Pathology

• hyperplastic, distorted lobules of acinar tissue
• increased stroma
• basal cell layer shows smooth muscle metaplasia (prostate)

Differential diagnosis

• adenocarcinoma

More general terms

• adenosis
• sclerosis