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About Breast Cancer

Breast cancer occurs when malignant cells develop within the breast tissue, most commonly starting in the ducts or lobules. To navigate a diagnosis or support a loved one, it is essential to understand how these cells develop and what that means for long-term health.

RFTC Japan is dedicated to providing Japanese women and men with the essential knowledge, education, and emotional support needed to navigate every stage of this journey. Whether you are here for early detection awareness, treatment information, or community support, we are here to help you stay informed and proactive.

Breast Cancer Basics

Explore the fundamentals of breast cancer, from common risk factors to vital statistics. Learn why early detection is your best defense.

What is Breast Cancer?
Understanding the Risk of Breast Cancer
Breast Cancer Statistics (Global & Japan)

Diagnosis & Staging

Recognizing signs and symptoms and understanding how cancer is identified and categorized.

Signs and Symptoms
The Stages of Breast Cancer
Tumor Size and Staging
Metastases and Staging
Early-Stage Breast Cancers (Non-invasive)

Risk Factors & Genetics

Exploring the role of BRCA1/BRCA2 mutations and the impact of early-life exposures.

BRCA1 and BRCA2 Mutations in Men
BRCA1 and BRCA2 Mutations in Women
Lobular Carcinoma in Situ (LCIS)
Early Life Exposures

Benign Breast Conditions

Navigating non-cancerous breast changes through our patient-focused FAQ.

Patient FAQ