Lump on the left side of the breast in the line of armpit may signify underlying breast tumor
. Here, you need to consult with oncologist
at the earliest.
Nature of the lump (benign or malignant) should be confirmed at the earliest by undergoing overall clinical examination including axillary LN assessment and one mammography
for screening. FNAC of the concerned lump tissue is required to confirm the diagnosis.
Surgical excision of the breast lump or lumpectomy
is the procedure of choice. Kindly consult with your surgeon regarding this for better management.
Hope, it helps. Good luck.