The most common reason for a lump forming on the ribs is something known as a lipoma, which is a collection of fatty tissue. This type of lump can lie beneath the surface of the skin covering a rib. They are usually painless, freely mobile under your fingers and stay the same over time.
Other causes of a lump on your rib could be:
Unfortunately it’s not possible to diagnose what the exact problem is in your case without performing an examination. Our advice would be to visit your GP. They’ll be able to examine you and if necessary perform further tests, such as a small biopsy of the lump, to make an accurate diagnosis and to guide any treatment if required.
Answered by the Health at Hand nurses
Lumps and swellings – NHS factsheet
Bone spur – NHS factsheet
Musculoskeletal centre – AXA PPP healthcare
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