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axillaThe depressed hollow region located under the shoulder joint, medial to the upper arm.
Content Axillary vessels, including the axillary artery (the extension of the subclavian artery, which becomes the brachial artery) and the axillary vein (which arises from the brachial veins and basilica vein and becomes the subclavian vein); axillary nerves; brachial plexus; lymph nodes; fat; loose connective tissue.
Muscles, anterior to posterior Pectoralis major, deltoid, biceps brachii, coracobrachialis, teres major and latissimus dorsi, and long head of triceps.
Medical significance Site of lymphatic drainage from the arm (e.g., for melanomas) and breast (e.g., for breast cancer).
Sports injuries Axillary (nerve) damage is uncommon, but well-described in contacts sports (e.g., from collisions in ice hockey or tackling in American football).
Patient discussion about armpit
Q. A lump in my armpit Hi, Last week after the shower I found a small painful lump in my right groin. I went to see a doctor and he prescribed me some antibiotics. I’ve been taking it for 5 days and the lump is still there. I’m 31, usually healthy and work-out in the gym regularly, don’t smoke or use drugs and don’t take any medications. Is that dangerous? Should I go and see another doctor?
Q. I located a lump on the surface of my right underarm. I think I am showing some signs of breast cancer. I am 27 years old working lady. I think I am showing some signs of breast cancer. I located a lump on the surface of my right underarm. This lump is of a cherry size and does not pain at all. But I do have pain in my breast. I had my mammogram done which showed no lump and my doctor says that there is nothing to worry and she has given me some medicines. I want to know that if everything is normal then how come these lumps came.