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Updated: Jun 9, 2025

An Ex vivo Model to Study Hormone Action in the Human Breast
Published on: January 8, 2015
Hormone Receptor Positive Breast Cancer in Young Women: A Review
Nicola McShane1, Alexandra Zaborowski1, Mary O'Reilly1
1St Vincent's University Hospital, Dublin, Ireland.
Abstract:
The global incidence of hormone-positive breast cancer (HR+ BC) in young women is rising, though the underlying reasons remain unclear. HR+ disease in younger women appears to represent a distinct clinical entity compared to that in older women, exhibiting distinct clinicopathological characteristics, outcomes and responses to treatment. Despite these differences, there is a paucity of large-volume data focusing on young women with HR+ in contemporary literature. Hormone receptor positive breast cancer in young women is associated with poorer prognoses compared to older women. Additionally, early age onset breast cancer presents unique challenges, including concerns related to fertility, the toxic effects of therapeutic agents, and specific surgical considerations. The purpose of this review is to report the existing literature on HR+ disease in young women.
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