Search results
Results From The WOW.Com Content Network
A Meckel's diverticulum, a true congenital diverticulum, is a slight bulge in the small intestine present at birth and a vestigial remnant of the vitelline duct.It is the most common malformation of the gastrointestinal tract and is present in approximately 2% of the population, [1] with males more frequently experiencing symptoms.
A Littre hernia is a very rare type of hernia which occurs when a Meckel's diverticulum protrudes through a defect in the abdominal wall. [1] It is named after French physician Alexis de Littre. [2] This hernia may occur in a number of anatomical locations, typically in the inguinal region (50%), umbilicus (20%) or femoral canal (20%).
On this site of attachment, sometimes a pathological Meckel's diverticulum may be present. A mnemonic used to recall details of a Meckel's diverticulum is as follows: "2 inches long, within 2 feet of ileocecal valve , 2 times as common in males than females, 2% of population, 2% symptomatic, 2 types of ectopic tissue: gastric and pancreatic".
The two can be differentiated as follows: a hamartoma is disorganized overgrowth of tissues in their normal location (e.g., Peutz–Jeghers polyps), while a choristoma is normal tissue growth in an abnormal location (e.g., osseous choristoma, [6] gastric tissue located in distal ileum in Meckel diverticulum).
A jejunal diverticulum is a congenital lesion and may be a source of bacterial overgrowth. It may also perforate or result in abscesses. A Killian-Jamieson diverticulum is very similar to a pharyngeal esophageal diverticulum, differing in the fact that the pouching is between the oblique and transverse fibers of the cricopharyngeus muscle. [7]
Ultrasound can provide preliminary investigation for diverticulitis. Amongst the findings that can be seen on ultrasound is a non-compressing outpouching of bowel wall, hypoechoic and thickened wall, or there is obstructive fecalith at the bowel wall. Besides, bowel wall oedema with adjacent hyperechoic mesentery can also be seen on ultrasound.
Causes of upper gastrointestinal bleeding that may result in melena include malignant tumors affecting the esophagus, stomach or small intestine, hemorrhagic blood diseases, such as thrombocytopenia and hemophilia, gastritis, stomach cancer, esophageal varices, Meckel's diverticulum and Mallory-Weiss syndrome.
1950 Gold Medal of the American Medical Association for original investigation 1961 Samuel D. Gross Prize of the Philadelphia Academy of Surgery [ 28 ] [ 29 ] 1963 Distinguished Service Award of the American Medical Association for research, teaching, and surgical practice [ 30 ]