Our expert says:
Swollen glands are usually caused by infection in the area drained by the specific lymph gland. Glands above the collarbone usually drain from the chest and abdomen, so it may be an infection in the lungs,breast or abdomen area. In rare cases it can be a sign of lung cancer, so please rather let your doctor have a look if it does not go away by itself in a week or so.
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