
What Causes Pain Under Left Rib Cage?

He could be having urinary tract infection.
Detailed Answer:
Thanks for asking on HealthcareMagic.
I have gone carefully through the details and understand your concerns. Since you have already visited the ER, I can perhaps safely assume that they have already examined him and checked for splenomegaly or splenic enlargement. If that is not present and if the blood tests are normal, I do not think that you need to be concerned. It could be due to costochondritis, a condition that can be managed by hot compress and analgesics.
However, the trace of blood concerns me. It could be due to an urinary tract infection. It could perhaps explain the trace of free fluid in the pelvis. I would be glad if you could upload the urine report.
Since the CAT scan is overall fine, I would not worry at the moment about any abdominal pathology. However, follow up with a ultrasonography may be needed later as there was trace of free fluid in the pelvis.
Regards


Pancreatitis less likley. Crohn's unlikely.
Detailed Answer:
Thanks for writing back.
Pancratitis does not seem likely. In general it is associated with severe intractable deep seated pain radiating towards the back. If the pain is not like that, you need not worry. However, it can be confirmed by checking the blood lipase and amylase levels.
Crohn's also does not seem likely. I do not think that you need to worry about it unless he has been suffering from gastrointestinal issues.
Regards

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