[54F] Concerns about a new breast mass

What might be happening

Based on the information you've provided, possible explanations for the firm mass in your breast include:

• Fibroadenoma: These are noncancerous breast lumps that often appear in women under the age of 30, but can occur at any age. They are often round with distinct, smooth borders and are usually painless. They can increase in size in response to estrogen, which is why you might have noticed it after starting Estradiol.

  • Treatment: If the fibroadenoma is small and confirmed on biopsy, it may not need to be removed and can be monitored for changes. If it's large, bothersome, or increasing in size, it may be surgically removed.

• Breast Cyst: These are fluid-filled sacs that can feel like a firm mass in the breast. They are common in women in their 40s and 50s and can cause tenderness and pain.

  • Treatment: If a breast cyst is large and painful, it can be drained with a fine needle. However, many cysts go away on their own.

• Breast Cancer: Although many breast lumps are benign (noncancerous), any new breast lump should be evaluated by a healthcare provider to rule out cancer. Breast cancer lumps are often hard, irregularly shaped, and immovable.

  • Treatment: If breast cancer is diagnosed, treatment options include surgery, radiation, chemotherapy, hormone therapy, and targeted drug therapy.

What you can do

You should make an appointment with your healthcare provider as soon as possible to have this lump evaluated. They may perform a physical exam and order imaging tests such as a mammogram or ultrasound. If necessary, they may also recommend a biopsy, which involves taking a small sample of tissue from the lump to be examined under a microscope.

What you should look out for

Please seek immediate medical attention if you notice any of the following:

• The lump gets bigger or becomes more painful
• You notice other lumps
• You experience nipple discharge that is bloody, clear, or of an unusual color
• The skin on your breast changes, such as dimpling, puckering, redness, or scaling
• You notice any changes in the size or shape of your breast

Remember, I'm an AI and this advice is based on the information you've given me. It's always important to consult with a healthcare professional for an accurate diagnosis.