Post-Vaccine Breast Lump: When to Seek Medical Attention?

Q: Post-Vaccine Breast Lump: When to Seek Medical Attention?

Hello： Please make an appointment for a consultation with the "Breast Surgery" department. <br>Thank you.

A lump appeared in the chest after receiving the vaccine?

Hello, doctor: After receiving the first dose of the BNT vaccine in October 2021, I noticed a lump in the upper right chest before getting the second dose at the end of November.
I did not inform the doctor and proceeded with the second dose.
The lump did not increase in size or disappear until mid-February when I received the third dose of Moderna, at which point the condition began to worsen.
The lump grew larger and became painful, and by May, a lump also appeared under my right armpit.
Which specialty should I consult for medical attention?

Xu Ayi, 50~59 year old female. Ask Date: 2022/07/14

Dr. Chen Yunfang reply Oncology

Hello: Please make an appointment for a consultation with the "Breast Surgery" department.
Thank you.

Reply Date: 2022/07/14

More Info

When it comes to post-vaccine symptoms, particularly concerning breast lumps or swelling, it is crucial to approach the situation with caution and awareness. In your case, you experienced a lump in your right breast after receiving the BNT vaccine, which subsequently worsened after receiving the Moderna vaccine. Given that the lump has increased in size and has become painful, it is advisable to seek medical attention.

In general, any new lump in the breast that persists or changes over time should be evaluated by a healthcare professional. It is essential to differentiate between benign conditions, such as cysts or fibrocystic changes, and more serious concerns, such as infections or malignancies. The fact that you have also noticed swelling in your right axilla (armpit) adds another layer of complexity that warrants further investigation.

For your specific situation, you should consider seeing a specialist in breast health, such as a breast surgeon or a general surgeon with experience in breast conditions. They can perform a thorough clinical examination and may recommend imaging studies, such as a mammogram or ultrasound, to assess the nature of the lump. If necessary, they might also perform a biopsy to determine if the lump is benign or malignant.

It is also worth noting that some individuals may experience lymphadenopathy (swelling of lymph nodes) in the axillary region following vaccination, particularly with mRNA vaccines like BNT and Moderna. This reaction is generally benign and resolves over time. However, persistent or worsening symptoms, especially those accompanied by pain or changes in the breast tissue, should not be ignored.

In summary, you should seek medical attention promptly due to the changes in your breast tissue and the development of axillary swelling. A breast specialist will be able to provide the most appropriate care and guidance. Remember, early evaluation and intervention are key in managing any potential health issues effectively.

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