Pancreas can show acute inflammation suppuration hemorrhage and or extensive necrosis.
Paracolic gutter cysts.
The right lateral paracolic gutter runs from the superiolateral aspect of the hepatic flexure of the colon down the lateral aspect of the ascending colon and around the cecum.
But disease history including appendicitis or mucous as coincidental finding are alternative forms of presentation.
The paracolic gutter is associated with a subphrenic abscess.
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Hemoperitoneum starts near the site of injury and flows along expected anatomic pathways.
There is a multi cystic mass extending from the pelvis along the right paracolic gutter to the upper abdomen.
Symptoms of cancer spreading in the peritoneum the clinical profile of pseudomyxoma peritonei is normally increasing abdominal circumference and confirmation of mucous in the abdominal cavity jelly belly.
There can be extensive peripancreatic inflammation.
The right and left paracolic gutter are connected to subphrenic spaces proximally and to the pelvic area at the distal end.
Fluid can accumulate in lesser sac and pleural space and paracolic gutters.
The main paracolic gutter lies lateral to the colon on each side.
Hemorrhage from the liver typically flows in a caudal direction from the perihepatic spaces and hepatorenal fossa along the right paracolic gutter and into the cul de sac which is the rectouterine space in women and rectovesical space in men fig 1.
Both the right and left paracolic gutters communicate with the pelvic spaces.
A less obvious medial paracolic gutter may be formed especially on the right side if the colon possesses a short mesentery for part of its length.
Infected peritoneal fluids get a passageway through these gutters to other compartments of the abdominal cavity.
When larger amounts of ascites are present the fluid accumulates in the paracolic gutters causing progressive centralization of bowel loops.
The inframesocolic space is the peritoneal space below the root of the transverse mesocolon the supramesocolic space lies above the transverse mesocolon s root.
In men the most gravity dependent site for fluid accumulation is the rectovesical space.
The connection between the left paracolic gutter and the left subphrenic space is partially limited by the phrenicocolic ligament.
These images look quite similar to images of a pseudomyxoma peritonei which was discussed before.
Ipsilateral psoas hematoma and fat stranding in the right paracolic gutter confirmed rupture of the hemorrhagic cyst from the right native kidney fig.
The retroperitoneal hematoma measured 13 4 mm diameter and severely compressed the inferior vena cava ivc fig.
It can be divided into two unequal spaces posteriorly by the mesentery of the small bowel as it runs from the duodenojejunal flexure in the left upper quadrant to the ileocecal valve in the right lower quadrant.
