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Difference between revisions of "Duodenum"
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→Duodenal nodules
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{{familytree | C01 | | C02 | | C03 | | C04 | | C05 | | C06 | | C07 | | C08 | | | | |C01=Brunner's<br>gland|C02=Heterotopic<br>gastric mucosa|C03=Lymphoid<br>nodule|C04=Adenoma|C05=NET|C06=Paraganglioma|C07=Prolapsed<br>gastric polyp|C08=Metastasis}} | {{familytree | C01 | | C02 | | C03 | | C04 | | C05 | | C06 | | C07 | | C08 | | | | |C01=Brunner's<br>gland|C02=Heterotopic<br>gastric mucosa|C03=Lymphoid<br>nodule|C04=Adenoma|C05=NET|C06=Paraganglioma|C07=Prolapsed<br>gastric polyp|C08=Metastasis}} | ||
{{familytree/end}} | {{familytree/end}} | ||
===Features of normal=== | |||
*Three tall villi. | |||
*Few intraepithelial lymphocytes; < 1 lymphocyte / 4 epithelial cells. | |||
*No subepithelial collagen band. | |||
*Predominant lamina propria cell: plasma cells. | |||
**Lack of plasma cells suggests ''common variable immunodeficiency'' (CVID).<ref name=pmid20629103>{{cite journal |author=Agarwal S, Smereka P, Harpaz N, Cunningham-Rundles C, Mayer L |title=Characterization of immunologic defects in patients with common variable immunodeficiency (CVID) with intestinal disease |journal=Inflamm Bowel Dis |volume= |issue= |pages= |year=2010 |month=July |pmid=20629103 |doi=10.1002/ibd.21376 |url=}}</ref> | |||
*No organisms in lumen. | |||
==Celiac sprue== | ==Celiac sprue== | ||