[33F] With a hard, movable lump in left breast

What might be happening

Based on the information you have provided, here are some possible explanations for the lump in your breast:

• Breast Cyst: These are fluid-filled sacs within the breast, which can feel hard and movable. They are usually benign (non-cancerous) and can appear suddenly.

  • Treatment: Often, no treatment is needed unless the cyst is painful or causing discomfort. In such cases, a doctor may drain the fluid.

• Fibroadenoma: This is a common benign breast tumor that is usually hard, movable, and painless. It can appear suddenly and is more common in younger women.

  • Treatment: Often, no treatment is needed, but a doctor may recommend monitoring the lump or removing it if it causes discomfort.

• Trauma or Injury: Given the recent physical activity you mentioned, the lump could be a result of trauma or injury to the breast tissue.

  • Treatment: Applying cold compresses and avoiding further trauma can help. If the lump persists, a doctor should evaluate it.

• Breast Cancer: While less likely given your description and lack of other symptoms, it is important to rule out breast cancer, especially if the lump persists or changes.

  • Treatment: Early detection and treatment are crucial. A doctor may recommend imaging tests like a mammogram or ultrasound and possibly a biopsy.

What you can do

1. Monitor the Lump: Keep an eye on the lump for any changes in size, shape, or texture. Note any new symptoms such as pain, nipple discharge, or changes in the skin.
2. Avoid Further Trauma: Try to avoid any activities that might cause additional trauma to the breast.
3. Apply Cold Compresses: If you experience discomfort, continue using cold compresses to reduce any swelling or pain.
4. Consult a Doctor: Schedule an appointment with your healthcare provider to get a formal assessment. They may recommend imaging tests or other evaluations to determine the cause of the lump.
5. Use MDandMe: You can use MDandMe to journal your symptoms, track any changes, get insights, and share your medical notes with your provider.

What you should look out for

Seek medical attention more urgently if you notice any of the following:

• Rapid increase in the size of the lump
• Persistent pain or discomfort
• Nipple discharge, especially if it is bloody
• Changes in the skin over the lump, such as dimpling or puckering
• New lumps appearing in the same or other breast

Remember, while this information can help guide you, it is not a substitute for professional medical advice. Please consult a healthcare provider for a formal diagnosis and appropriate treatment.