What causes a lump under the armpit during pregnancy, and what should be done about it?

May 15, 2023 Source: Cainiu Health
Dr. Liu Wan
Introduction
Pregnant women with lumps under the armpit may be caused by physiological factors or pathological conditions, such as swollen lymph nodes, fibroma, etc., and treatment should be based on the specific situation. In addition, such lumps could also result from sebaceous cysts, lymphadenitis, or lymphoma. It is recommended to seek medical attention at a hospital as early as possible. Daily activities should avoid pressing or squeezing the affected area to prevent interference with recovery.

Swelling under the armpit of a pregnant woman may be caused by physiological factors or pathological conditions, such as lymph node enlargement, fibroadenoma, etc. Appropriate management should be based on specific circumstances. The details are as follows:

I. Physiological Factors

During pregnancy, hormonal levels in the body fluctuate significantly, which can stimulate further development of breast tissue. As the breast tissue gradually enlarges, accessory breasts may form, leading to the appearance of lumps under the armpit. This is considered a normal phenomenon.

II. Pathological Factors

1. Lymph Node Enlargement

Lymph nodes are part of the body's immune system. Due to the effects of pregnancy, a woman's immunity may decrease. If the skin in the armpit area is injured and exposed to external bacteria, an inflammatory response may occur, activating nearby lymph nodes and causing lymphocyte proliferation, resulting in lymph node swelling and the aforementioned symptoms. It is recommended to visit a hospital to determine the exact cause of the lymph node enlargement and receive appropriate treatment accordingly.

2. Fibroadenoma

Fibroadenoma is a benign tumor; its exact cause remains unclear but may be related to hormonal changes. During pregnancy, unstable hormone levels may lead to endocrine disorders, promoting excessive proliferation of tumor cells and formation of fibroadenomas. Typically, these tumors are small, well-defined, and painless, often requiring no special intervention. Surgical removal can be considered after delivery.

In addition, other conditions such as sebaceous cysts, lymphadenitis, or lymphoma could also be responsible. It is advisable to seek medical attention early. Avoid squeezing or pressing the affected area in daily life to prevent interference with healing.


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