USMLE® Step 1 style questions USMLE
A 44-year-old man is referred to a gastroenterologist because of a 6-month history of weight loss, foul-smelling diarrhea, and joint pain. The patient reports that he also occasionally experiences fever and cramping, both relived by non-steroidal anti-inflammatory drugs. The patient does not recall any inciting factors, and has been in good health up to that point. The patient's primary care physician ruled out malignancies, rheumatic disease, and HIV. The patient however tested positive for HLA-B27. A small bowel biopsy with results are shown in the slide below. What of the following findings is most likely associated with the patient's condition?