Hello and welcome to HCM, Thank you for your query. First of all, as he is being treated for diverticulitis, this must mean a diagnosis was made. Let us talk about a granuloma. A granuloma is the body s response to a foreign substance which it could not eliminate, or throw out, thus a collection of immune cells over this substance takes place, resulting in granuloma formation. The foreign substance could be bacteria, fungus, tumor, etc. This doesn t necessarily mean that this is cancer. Although a granuloma can be seen even with malignant tumors, this is not always so. Further investigation of the granuloma will be required to be able to tell what it is for sure. The liver enzymes are usually elevated during the presence of some abnormality. And again, an elaborate work-up would be required to find the cause for this elevation. As your brother is under a doctors supervision, it would be best to conduct all the investigations under his care at this moment, and rule out the worst. I hope I have succeeded in answering your questions, you could write back to us anytime for further clarifications. Best wishes.