A review of microscopic colitis, a chronic, intermittent inflammatory bowel disease that predominantly affects older women and typically presents with frequent watery, non-bloody stools.

My patient is a 35-year-old man with a history of abdominal pain and loose stools for the past 8 months. He has approximately 1-2 episodes per month. Three months ago a stool analysis showed Entamoeba ...

(a) Atrophic/withering crypts (red arrow) and lamina propria vascular congestion. Notice that the cellularity of the lamina propria is not significantly increased. (b) Vascular congestion and ...