Breast Tumor Luminal A Or B Cn377721
Luminal A and B are subtypes of breast cancer defined by hormone receptor status. They typically have a favorable prognosis and are treated with hormone therapy, sometimes combined with chemotherapy or targeted agents.
Key facts at a glance
- ICD-10
- C80.1
- ICD-11
- 2A00.0
- Body system
- oncologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Breast lump
(breast)Generalized symptoms
(oncologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Nipple discharge
(breast)Breast pain
(breast)Skin changes
(breast)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Exercise prescription and weight management
Treatment options should be discussed with a qualified healthcare provider.
Surgical Resection
Breast-conserving surgery (lumpectomy) or mastectomy depending on tumor size, location, and patient preference, with sentinel lymph node assessment.
Endocrine Therapy
Hormone-blocking agents such as aromatase inhibitors or selective estrogen receptor modulators to suppress tumor growth in hormone receptor-positive cancers.
Additional treatment options
Radiation Therapy
Targeted radiation to eliminate residual cancer cells following lumpectomy, typically administered over several weeks with careful dose planning.
procedureChemotherapy
Systemic chemotherapy for higher-risk tumors, particularly in luminal B subtype with higher proliferative rates, administered in cycles.
medicationLifestyle Modification
Weight management, regular physical activity, and alcohol reduction to improve outcomes and reduce recurrence risk in hormone-sensitive breast cancer.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Breast Tumor Luminal A Or B Cn377721?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
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This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy