Category Archives: Digestive

Intussusception- Barium enema

Intussusception is one of the most common causes of acute abdomen in infancy. Intussusception occurs when a portion of the digestive tract becomes telescoped into the adjacent bowel segment. This condition usually occurs in children between 6 months and 2 years of age. In this age group, intussusception is idiopathic in almost all cases. The vast majority of childhood cases of intussusception are ileocolic; that is, the ileum becomes telescoped into the colon. In the past, intussusception was a severe condition with high morbidity and mortality rates. Currently, prompt diagnosis and effective treatment lead to a favorable outcome in most cases.(from radiographics – link)

Image from Anatomybox.  Coiled spring sign visible.

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An intussusception is a medical condition in which a part of the intestine has invaginated into another section of intestine; this leads to a bowel obstruction.  In the scout film below, you can see a “target sign” which is usually only visible on CT scan, in this case is visible in the AP image of the abdomen.

mouseover for labels image from anatomybox
This child presented with a 2 day history of crampy abdominal pain.

CT scan of “target sign” (link)

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Simple Columnar Epithelium – Colon

In columnar epithelium, the cells are taller than they are wide.   Goblet cells which look like balloons suspended in the epithelium secrete mucus; the clear “balloon” in the apical region of each goblet cell is where the stored mucus is located (mucus does not react with H&E stain). In the colon, villi are absent and, instead, a simple columnar epithelium forms the intestinal “glands,” which are invaginations made up of mostly goblet cells.

Virtual Microscopy (link). Univ of Michigan.  This is colon histology

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Simple Columnar Epithelium

simple columnar epithelium is a columnar epithelium that is uni-layered. In humans, a simple columnar epithelium lines most organs of the digestive tract including the stomach, small intestine, and large intestine. Simple ciliated columnar epithelia line the uterus. Simple columnar epithelia are further divided into two categories: non-ciliated and ciliated. (from wikipedia)

Virtual Microscopy (link). Univ Michigan Histology

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