]> 2026-07-31T07:51:22+00:00 WBR0927 0 en Crypt abscesses Crypt abscesses are characteristic of ulcerative colitis, an inflammatory bowel disease that often manifests with bloody diarrhea, tenesmus, and weight loss. PAS-positive, acid-fast macrophages PAS-positive, acid-fast macrophages may be present in HIV infections as a result of opportunistic infection caused by ''Mycobacterium avium intracellulare''. PAS-positive, non-acid-fast macrophages Diffuse lymphocytic infiltration Diffuse lymphocytic infiltration is characteristic of intestinal lymphoma. Normal mucosa Changes in mucosa observed on endoscopy typically include yellow shaggy mucosa with erythematous eroded patches. Pathology A 50-year-old man presents with complaints of diffuse abdominal pain and non-bloody diarrhea. He states that he recently experienced joint pains, unintentional weight loss, and decreased night vision over the past few months. Physical examination is remarkable for inflammation at the angle of the mouth, loss of papillae on the tongue, generalized lymphadenopathy, and diffuse hyperpigmentation of the skin. Fecal occult blood test is positive, and ELISA is negative for HIV antibodies. What is the characteristic finding on intestinal biopsy in this patient? C Gastrointestinal 2020-10-28T02:06:07Z 2459150.587581 WBR0927