Hi.
Thanks for your query and an elucidate history about your friend.
Since the lymph nodes are enlarged after so many surgeries, it is possible that the inflammation is irritating the small intestines which go into spasm as a reflex mechanism after eating, this is a well known fact.
Once the
CT scan is done, it must have been contrast enhanced and would have shown any
ischemia is present. Please ask the
Radiologist to review, I do not think it is present as the Radiologist would have definitely noted such a gross thing.
A proper antibiotic and anti-inflammatory and if required a short course of a
steroid should help.
Another possible reasons is the presence of
intestinal obstruction of sub-acute nature that can cause the similar lesions.
Enteroclysis if the CT scan shows doubtful intestinal pathology will be confirmatory.
I hope this answer helps for a proper diagnosis and treatment.