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Doctor insights on: Breast Cancer Armpit

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Can pain in my right armpit be breast cancer?

Can pain in my right armpit be breast cancer?

Not likely: Breast cancer increases as women get older and it would be very unlikely for you to have breast cancer at age 20. At age 30 the chance of developing breast cancer during the next 10 years is 1 in 227. Breast cancer can spread to lymph nodes in the armpit, but this usually won't cause pain. It's much more likely your pain is from something else. ...Read more

Dr. Barry Rosen
1,336 doctors shared insights

Breast Cancer (Female) (Definition)

Breast cancer results when glandular cells lining the milk ducts and lobules of the human breast begin to grow in an unregulated manner. The growth occurs initially inside the ducts but eventually breaks outside into the breast tissue and ultimately spreads both to the lymph nodes in the armpit and via the bloodstream to other parts of the body. Because of the promoting affect of estrogen almost all breast cancer occurs in women and is a rarity in men. The unregulated growth is due to both inherited and acquired genetic defects. It is the most common malignancy in women but it often curable if found early and treated effectively with surgery, hormonal therapy, chemotherapy and targeted therapy, or a combination thereof. Early detection before the malignancy becomes large enough to be felt depends on mammography/sonography and MRI imaging of the breast on an annual basis. ...Read more


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I have lumps in my armpits that don't seem to go away. I am only 19 and feel like breast cancer only happens to older people. What could it be?

I have lumps in my armpits that don't seem to go away. I am only 19 and feel like breast cancer only happens to older people. What could it be?

You are correct: Breast cancer is quite rare in young women. If you are feeling something that has been there for an extended period of time then you should probably be examined by your personal physician. ...Read more

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I am experiencing pain under my armpits down to the breasts..I hear if there is pain then I shouldn't worry about breast cancer so what could that be?

I am experiencing pain under my armpits down to the breasts..I hear if there is pain then I shouldn't worry about breast cancer so what could that be?

Pain: Several questions must be answered before diagnosis can be made [exam also necesssary]: what initiates the pain? What makes it better? Is it throbbing, constant, intermittent, stabbing? How intense on a scale of 1-10? How long does it last each time? How often occurring? Any lumps in armpits? Any back trouble? Is the skin normal? Age of the patient? Any health issues? Any medicines prescribed? ...Read more

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Can lymph nodes under a person's armpits lead to breast cancer?

Can lymph nodes under a person's armpits lead to breast cancer?

No: Lymph nodes do not cause breast cancer. But breast cancer may spread to the lymph nodes in the axilla (armpit). If you feel enlarged nodes it is best to have medical evaluation to determine te cause of enlargement. ...Read more

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Can a constant pain in top breast and a little into the armpit mean breast cancer?

Can a constant pain in top breast and a little into the armpit mean breast cancer?

Not generally: Sounds like you have a muscle, vascular, lymphatic, or fascia spasm that is an obstacle to normal movements. Find osteopathic medicine treatment (doctor of osteopathy - od that uses manual manipulation therapy, or a physical therapist trained in osteopathic manual manipulation. ...Read more

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I have a pain in the far left side of my chest almost under armpit. Could it be breast cancer?

I have a pain in the far left side of my chest almost under armpit. Could it be breast cancer?

Mastalgia: Breast pain is not usually a sign of cancer and is more commonly related to hormonal changes or simple mastalgia. However, you should be seen by your surgeon to help figure out what is going on also imaging with an ultrasound could be helpful and or mammography this could be related to gynecomastia. ...Read more

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Left breast started hurting, found dime sized knot near armpit, was told breast cancer doesn't hurt, is this true? What else could it be?

Left breast started hurting, found dime sized knot near armpit, was told breast cancer doesn't hurt, is this true?  What else could it be?

See a Doctor: Any new lump in the breast should be a cause for concern, best handled by seeing your gyne or primary care doctor. While most cancers are not painful, it is not a reliable finding. Hopefully, your doctor will be able to alleviate your concern or refer you to a breast center/surgeon for definitive evaluation. I hope its a false alarm--good luck. ...Read more

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Hi,I am 45 years old and I have pain almost over a year now under my armpit left side, and part of my left breast .Is this sign for breast cancer? Or

We don't guess: One does not sit at home and just worry or guess. You have a significant concern. Go get an examination and testing to determine the cause of your problem. ...Read more

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I ve small pain in my left breast, left armpit & back(left side). Can dis b a symptom of breast cancer(no cancer history in my family) I am 21 female?

I ve  small pain in my left breast, left armpit & back(left side). Can dis b a symptom of breast cancer(no cancer history in my family) I am 21 female?

Very unlikely: It would be extremely unusual, but not impossible, for this to be a breast cancer. Any persistent symptom in the breast, and certainly any mass, should be examined by a doctor. You may need to have an ultrasound of the area done. It is always better to look into these things than ignore them. ...Read more

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Dr. Barry Rosen
4,214 doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


Axilla (Definition)

Area of human body directly under the joint where the shoulder connects to the arm. It contains axillary vessels, brachial nerve plexus, lymph nodes & vessels, axillary ...Read more