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Related Experiment Video

Updated: Jun 10, 2026

"Sun's Seven-Step Technique" for Endoscopic En-Bloc Resection of Thyroid Cancer via the Chest-Breast Approach

"Sun's Seven-Step Technique" for Endoscopic En-Bloc Resection of Thyroid Cancer via the Chest-Breast Approach

Published on: November 28, 2025

Clinical practice decisions in endocrine therapy.

Michael Untch¹, Christoph Thomssen

¹Helios Klinikum Berlin Buch, Academic Hospital of University Charite Berlin, Berlin, Germany. Michael.untch@helios-kliniken.de

Cancer Investigation

|July 27, 2010

Summary

Systemic adjuvant therapy for breast cancer aims to prevent recurrence and improve survival. Aromatase inhibitors (AIs) offer improved outcomes over tamoxifen for hormone receptor-positive breast cancer patients.

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Last Updated: Jun 10, 2026

"Sun's Seven-Step Technique" for Endoscopic En-Bloc Resection of Thyroid Cancer via the Chest-Breast Approach

"Sun's Seven-Step Technique" for Endoscopic En-Bloc Resection of Thyroid Cancer via the Chest-Breast Approach

Published on: November 28, 2025

Area of Science:

Oncology
Endocrinology

Background:

Systemic adjuvant therapy is crucial for controlling breast cancer recurrence and enhancing long-term survival.
Tamoxifen has been the established standard for adjuvant endocrine therapy in hormone receptor-positive breast cancer.
Estrogen receptor-positive disease treated with tamoxifen shows a significant reduction in breast cancer mortality.

Purpose of the Study:

To review the role of aromatase inhibitors (AIs) in adjuvant endocrine therapy for breast cancer.
To compare the efficacy of AIs with tamoxifen in improving disease-free and overall survival.
To guide the selection of optimal adjuvant AI treatment strategies based on patient risk profiles.

Main Methods:

Review of original publications and treatment guidelines on adjuvant endocrine therapy for breast cancer.
Analysis of data on the effectiveness of tamoxifen and various aromatase inhibitors (anastrozole, letrozole, exemestane).
Evaluation of different AI treatment strategies: upfront, switching, and extended therapy.

Main Results:

Aromatase inhibitors (AIs) demonstrate potential to further improve disease-free survival and reduce distant metastases compared to tamoxifen.
Approved AI regimens include upfront treatment (anastrozole, letrozole), switching after 2-3 years of tamoxifen (anastrozole, exemestane), and extended therapy after 5 years of tamoxifen (letrozole).
AI therapy can lead to extended overall survival in some breast cancer cases.

Conclusions:

Choosing the optimal adjuvant AI treatment strategy requires careful consideration of individual patient risk profiles.
Physicians can utilize original research and clinical guidelines to personalize adjuvant AI selection.
Aromatase inhibitors represent an important advancement in adjuvant therapy for hormone receptor-positive breast cancer, offering improved outcomes.