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A Richter's hernia occurs when the antimesenteric wall of the intestine protrudes through a defect in the abdominal wall. This is distinct from other types of abdominal hernias in that only one intestinal wall protrudes through the defect, such that the lumen of the intestine is incompletely contained in the defect, while the rest remains in the peritoneal cavity.
Colorectal cancer may metastasise to the inferior mesenteric lymph nodes. For this reason, the inferior mesenteric artery may be removed in people with lymph node-positive cancer. [3] This has been proposed since at least 1908, by surgeon William Ernest Miles. [4]
Amyand's hernia is a rare form of an inguinal hernia (less than 1% of inguinal hernias) [2] which occurs when the appendix is included in the hernial sac and becomes incarcerated. The condition is an eponymous disease named after a French surgeon , Claudius Amyand (1660–1740), [ 3 ] who performed the first successful appendectomy in 1735.
Internal hernias occur when there is protrusion of an internal organ into a retroperitoneal fossa or a foramen (congenital or acquired) in the abdominal cavity.If a loop of bowel passes through the mesenteric defect, that loop is at risk for incarceration, strangulation, or for becoming the lead point of a small bowel obstruction. [1]
Thus, an irreducible, obstructed hernia can also be called an incarcerated one." [5] "Incarcerated hernia is a hernia that cannot be reduced. These may lead to bowel obstruction but are not associated with vascular compromise." [6] A hernia can be described as reducible if the contents within the sac can be pushed back through the defect into ...
The ileocolic lymph nodes, from ten to twenty in number, form a chain around the ileocolic artery, but tend to subdivide into two groups, one near the duodenum and the other on the lower part of the trunk of the artery. Where the vessel divides into its terminal branches the chain is broken up into several groups:
Quadrants of the abdomen Diagram showing which organs (or parts of organs) are in each quadrant of the abdomen. The left lower quadrant (LLQ) of the human abdomen is the area left of the midline and below the umbilicus. The LLQ includes the left iliac fossa and half of the left flank region. The equivalent term for animals is left posterior ...
This may include pain or discomfort in the lower abdomen, especially with coughing, exercise, or urinating or defecating. [1] Often, it gets worse throughout the day and improves when lying down. [1] A bulge may appear at the site of hernia, that becomes larger when bending down. [1] Groin hernias occur more often on the right than left side. [1]