Thanks for answering. Inclined to think that it is either, and/or fungal or perhaps, yeast. Will hopefully get an answer tomorrow. I am currently in the throes of decision-making regarding surgery or biologics to treat about 4 cm of small bowel which is involved in a "bout" of Crohn's after 20 years, inflammation,abscesses, complex fistula, etc. Surgery is being recommended by GI doc at Mayo, where I was referrred because of recurring abscesses. The recommendation for surgery is based on my past pattern of surgeries, i.e. no infection, fast healing and long remission afterward...indolent form. I would have to have a resection. I am 72 and doc doesn't like the biologics because of age-related suseptability to infection, exacerbated by the immuno-suppressants. Thought the forum might help, but so far everyone has evenly divided thoughts that I can see. Have two more visits in my hometown with a GI guy and my primary care...so hopefully I can make a decision soon. If you care to comment on any of this, please feel free!