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Dr. Bob
Dr. Bob, Medical Doctor
Category: Pediatrics
Satisfied Customers: 5066
Experience:  20 Years in Internal Medicine, Neurology and Sports Medicine
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My son is 4 months old he has a very prominent lump on the

Customer Question

My son is 4 months old he has a very prominent lump on the bottom left of his rib cage when I feel it he doesn't scream but the two sides of his rib cage are very different even in shape one goes down gradually at an angle and the one with the lump forms almost a straight long across
JA: Have you seen a doctor about this yet? What medications are you taking?
Customer: I just noticed it the other day
JA: Anything else in your medical history you think the doctor should know?
Customer: He only takes lansoprazole
Submitted: 1 month ago.
Category: Pediatrics
Expert:  Dr. Bob replied 1 month ago.

Hi there. Is the lump protruding over (external to) the rib cage or does it seem to be under the rib cage lifting it up?

Customer: replied 1 month ago.
Seems to be on top but I really can not tell
Expert:  Dr. Bob replied 1 month ago.

It would be wise to have this area examined by a pediatrician. It could represent a congenital abnormality of the skin, rib cage or an underlying organ such as the spleen. With a careful exam and appropriate imaging (e.g. ultrasound, CT, MRI) this can be properly diagnosed and treated, if necessary.

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