Collagenous Sprue

**Definition:** A malabsorption syndrome characterized by collagenous mucosal lesions of the SMALL INTESTINE, atrophy of MICROVILLI, severe malabsorption, diarrhea, and MALNUTRITION often refractory to a gluten-free diet.

**Tree numbers:** - C06.405.469.637.378 - C18.452.603.314