Should I be concerned about this extra spleen? Medical Author Dr. Jay W. Marks Medical Editor Dr. Dennis Lee. Answer: Take the Tummy Trouble Quiz; Digestive Disease Myths Slideshow Pictures; Ulcerative Colitis Slideshow; Occasionally individuals are born with more than one spleen. - read more
Accessory spleen: About 10% of people have a small extra spleen. This causes no problems and is considered normal. Spleen Tests. Physical examination: By pressing on the belly under the left ribcage, a doctor can feel an enlarged spleen. - read more
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