Meckel's diverticulum: Difference between revisions
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==Background== | ==Background== | ||
*Most common cause of significant lower gastrointestinal bleeding in children | [[File:Diverticule de Meckel.jpg|thumb|Schematic of Meckel's diverticulum.]] | ||
*Most common cause of significant lower [[gastrointestinal bleeding (peds)|gastrointestinal bleeding in children]] | |||
*Most common congenital abnormality of the small intestine | *Most common congenital abnormality of the small intestine | ||
* | *Caused by incomplete involution of vitelline duct (occurs by 7 weeks) | ||
*Blind-ending true diverticulum that contains all layers found in the ileum | *Blind-ending true diverticulum that contains all layers found in the ileum | ||
===Rule of 2's=== | ===Rule of 2's=== | ||
*2% of population | *2% of population | ||
*2 | *2 feet from ileocecal valve | ||
*2 inches long | *2 inches long | ||
*2% become symptomatic | *2% become symptomatic | ||
*2 years of age (45%) | *2 years of age (45%) | ||
*2 | *2 times more common in boys | ||
*2 types of epithelium (gastric/pancreatic) | |||
==Clinical presentation== | ==Clinical presentation== | ||
| Line 27: | Line 29: | ||
{{Lower GI bleeding DDX}} | {{Lower GI bleeding DDX}} | ||
==Workup== | ==Evaluation== | ||
[[File:Meckel's Diverticulum AFIP.jpg|thumb|Meckel's diverticulum in a surgical specimen.]] | |||
===Workup=== | |||
*Meckel's scan (test of choice), also known as technetium-99m pertechnetate scan | *Meckel's scan (test of choice), also known as technetium-99m pertechnetate scan | ||
===Diagnosis=== | |||
==Management== | ==Management== | ||
| Line 39: | Line 44: | ||
==See Also== | ==See Also== | ||
[[Abdominal | *[[Abdominal pain (peds)]] | ||
==External Links== | |||
==References== | |||
[[Category:Pediatrics]] | [[Category:Pediatrics]] | ||
[[Category:GI]] | [[Category:GI]] | ||
Latest revision as of 22:13, 31 January 2024
Background
- Most common cause of significant lower gastrointestinal bleeding in children
- Most common congenital abnormality of the small intestine
- Caused by incomplete involution of vitelline duct (occurs by 7 weeks)
- Blind-ending true diverticulum that contains all layers found in the ileum
Rule of 2's
- 2% of population
- 2 feet from ileocecal valve
- 2 inches long
- 2% become symptomatic
- 2 years of age (45%)
- 2 times more common in boys
- 2 types of epithelium (gastric/pancreatic)
Clinical presentation
- Rectal bleeding (+/- pain)
- Most common presentation in <5yrs
- May be intermittent or massive
- Obstruction (due to intussusception or volvulus)
- May lead to bowel ischemia, shock
- Diverticulitis
- Umbilical fistula
- 1/3 will perforate
- Traumatic rupture after blunt trauma possible
Differential Diagnosis
Undifferentiated lower gastrointestinal bleeding
- Upper GI Bleeding
- Diverticular disease
- Vascular ectasia / angiodysplasia
- Inflammatory bowel disease
- Infectious colitis
- Mesenteric Ischemia / ischemic colitis
- Meckel's diverticulum
- Colorectal cancer / polyps
- Hemorrhoids
- Aortoenteric fistula
- Nearly 100% mortality if untreated
- Consider in patients with gastrointestinal bleeding and known abdominal aortic aneurysms or aortic grafts
- Rectal foreign body
- Rectal ulcer (HIV, Syphilis, STI)
- Anal fissure
Evaluation
Workup
- Meckel's scan (test of choice), also known as technetium-99m pertechnetate scan
Diagnosis
Management
- NGT
- Broad-spectrum antibiotics
- IVF
- pRBCs PRN
- Surgery consult