KEY FACTS Terminology Obstruction or blockage of ≥ 1 small bowel (SB) segments by intrinsic or extrinsic narrowing of SB lumen Imaging SB > 3 cm diameter on radiographs, 2.5 cm on CT Air-fluid levels on upright or decubitus radiograph Transition zone between dilated and collapsed bowel is critical to define presence, site, and cause of obstruction All better determined on CT than on plain films…
KEY FACTS Terminology Proportional gaseous dilatation of large and small bowel (SB) due to lack of intestinal peristalsis, not mechanical obstruction Imaging CT or abdominal plain films (supine, upright, decubitus) Proportional dilatation of SB and colon with no transition point SB > 3 cm on plain films, 2.5 cm on CT Air-fluid levels on upright and decubitus films Top Differential Diagnoses SB or colonic obstruction Intestinal…
KEY FACTS Terminology Mechanical bowel obstruction due to impacted gallstone(s) You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology Named according to GI site from which they arise You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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Embryology and Congenital Malformations The small intestine and the right side of the colon constitute the embryologic midgut, which herniates into the umbilical cord during the process of marked elongation in fetal development. Following a 270° counterclockwise rotation, the midgut returns to the peritoneal cavity. Errors during this complex series of events are common, resulting in varying degrees of malrotation ± volvulus. This may result in…
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KEY FACTS Terminology Malignancy arising from gastric mucosa You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology Objectively delayed gastric emptying in absence of mechanical obstruction You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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KEY FACTS Terminology Severe peptic ulcer disease associated with marked ↑ in gastric acid due to gastrin-producing pancreatic neuroendocrine tumor (gastrinoma) You’re Reading a Preview Become a Clinical Tree membership for Full access and enjoy Unlimited articles Become membership If you are a member. Log in here
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