Hepatorenal recess of subhepatic space

Hepatorenal recess of subhepatic space (or Morison's pouch)
Ultrasound Scan of the abdomen
Details
Identifiers
Latin	Recessus hepatorenalis, recessus subhepatici
TA	A10.1.02.427
FMA	14715
*Anatomical terminology* [edit on Wikidata]

The hepatorenal recess^[1] (subhepatic recess, pouch of Morison or Morison's pouch) is the space that separates the liver from the right kidney. As a potential space, the recess is not filled with fluid under normal conditions. However, fluid can collect in this space in circumstances where the abdomen fills with fluid, such as hemoperitoneum. This fluid may be seen on ultrasound or computed tomography (CT scan).

Clinical importance

Since it is a potential space, the hepatorenal recess is not normally filled with fluid. However, this space becomes significant in conditions in which fluid collects within the abdomen (most commonly ascites and hemoperitoneum). The intraperitoneal fluid, be it blood, ascites, or dialysate, collects in this space and may be visualized, most commonly via ultrasound or computed tomography (CT) scanning. As little as 30 or 40 ml of fluid in the abdominal cavity may be visualized in this space.

Early visualization of fluid in the hepatorenal recess on FAST scan may be an indication for urgent laparotomy.^[2]

Etymology

The hepatorenal recess is also called the pouch of Morison, or Morison's pouch, after the British surgeon James Rutherford Morison.^[3]

Additional images

A normal ultrasonographic view of Morison's pouch. The bright line is the capsule of the kidney; there is no fluid present and hence no visible space.
Ultrasound of liver (left side of the image) and right kidney (right side of the image) and Morison's pouch, not containing fluid.
Abdominal CT, showing Morison's pouch as the dark margin surrounding the right kidney (at lower left corner of image).
Ultrasonographic view of the abdomen demonstrating fluid within Morison's pouch.
Morison's pouch with fluid present (at red arrows).

References

↑ Forbis, Pat; Bartolucci, Susan L.; Stedman, Thomas Lathrop (2005). Stedman's medical eponyms. Hagerstown, MD: Lippincott Williams & Wilkins. p. 498. ISBN 0-7817-5443-7.
↑ Weill F, Le Mouel A, Bihr E, Rohmer P, Zeltner F, Sauget Y (April 1980). "[Ultrasonic diagnosis of intraperitoneal fluid in Morison's pouch (and in the splenoperitoneal recess): the moon crescent sign (author's transl)]". J Radiol (in French) 61 (4): 251–6. PMID 7392002.
↑ Morison's pouch at Who Named It?

Anatomy of the peritoneum and mesentery

General

Abdominal

From ventral mesentery	Lesser omentum Hepatoduodenal ligament Hepatogastric ligament Liver Coronary ligament (Left triangular ligament Right triangular ligament Hepatorenal ligament) Falciform ligament (Round ligament of liver and Ligamentum venosum in it, but not of it)

From dorsal mesentery	Greater omentum Gastrophrenic ligament Gastrocolic ligament Gastrosplenic ligament Mesentery Transverse mesocolon Sigmoid mesocolon Mesoappendix Root of the mesentery Splenorenal ligament Phrenicocolic ligament Folds Umbilical folds Supravesical fossa Medial inguinal fossa Lateral umbilical fold Lateral inguinal fossa Ileocecal fold

Abdominal cavity	Greater sac Lesser sac Omental foramen

General	Cystohepatic triangle Hepatorenal recess of subhepatic space Abdominal wall Inguinal triangle Peritoneal recesses Paracolic gutters Paramesenteric gutters

Pelvic

Uterus/ovaries	Broad ligament of the uterus Mesovarium Mesosalpinx Mesometrium) Ovarian ligament Suspensory ligament of ovary

Recesses	Male Recto-vesical pouch Pararectal fossa Female Recto-uterine pouch Recto-uterine fold (Uterosacral ligament) Vesico-uterine pouch Ovarian fossa Paravesical fossa Retroperitonium

Spaces

This article is issued from Wikipedia - version of the Friday, August 07, 2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.