Differential Diagnosis for Axilla Swelling in Pregnancy
Single Most Likely Diagnosis
- Breast cyst or fibroadenoma: These are common benign breast conditions that can cause axillary swelling due to the proximity of the breast tissue to the axilla. Pregnancy-related hormonal changes can exacerbate these conditions.
Other Likely Diagnoses
- Lymphadenopathy due to infection: Infections such as mastitis or breast abscess can cause axillary lymph node swelling.
- Pregnancy-related breast engorgement: Increased blood volume and hormonal changes during pregnancy can lead to breast engorgement, which may cause axillary swelling.
- Axillary vein thrombosis: Pregnancy increases the risk of venous thromboembolism, including axillary vein thrombosis, which can cause swelling in the axilla.
Do Not Miss Diagnoses
- Breast cancer: Although less common, breast cancer can present with axillary swelling, especially if there is lymph node involvement. It is crucial to rule out breast cancer, particularly in pregnant women, as the diagnosis and treatment can be complex.
- Lymphoma: Lymphomas, such as Hodgkin's or non-Hodgkin's lymphoma, can cause axillary lymphadenopathy and are essential to diagnose promptly due to their potential impact on both mother and fetus.
Rare Diagnoses
- Axillary lymphangioma: A rare, benign condition characterized by the abnormal growth of lymphatic vessels, which can cause axillary swelling.
- Neurofibromatosis: A genetic disorder that can cause neurofibromas to develop in the axilla, leading to swelling.
- Metastatic disease to the axilla: Although rare, metastatic disease from other primary sites can present with axillary lymphadenopathy and should be considered in the differential diagnosis.