関: peritoneal cavity

WordNet

comparative of little; "she walks less than she should"; "he works less these days"
used to form the comparative of some adjectives and adverbs; "less interesting"; "less expensive"; "less quickly" (同)to a lesser extent
(comparative of `little usually used with mass nouns) a quantifier meaning not as great in amount or degree; "of less importance"; "less time to spend with the family"; "a shower uses less water"; "less than three years old"
(nonstandard in some uses but often idiomatic with measure phrases) fewer; "less than three weeks"; "no less than 50 people attended"; "in 25 words or less"
(usually preceded by `no'
smaller in size or amount or value; "the lesser powers of Europe"; "the lesser anteater"
of less size or importance; "the lesser anteater"; "the lesser of two evils"
a structure resembling a bag in an animal

PrepTutorEJDIC

(量が)(…より)『もっと少ない』,いっそう少ない;(大きさ・価値・程度などが)(…より)『もっと少ない』,さらに劣る,もっと低い《+『than』…》 / もっと少なく,…ほどでなく《+『than…』》 / 《形容詞・副詞の劣勢の意の比較級を作るのに用いて》…ほど…でない《+『than…』》 / さらに少ない数(量) / …だけ足りない,を引いた
『いっそう小さい(少ない,重要でない)』,より劣った
小袋,のう(動植物の内部にあり,特に液を含んだもの)

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/08/31 01:07:26」(JST)

wiki en

The lesser sac, also known as the omental bursa, is the cavity in the abdomen that is formed by the lesser and greater omentum. Usually found in mammals, it is connected with the greater sac via the epiploic foramen (also known as the Foramen of Winslow). In mammals, it is not uncommon for the lesser sac to contain considerable amounts of fat.

Anatomic margins

It is demarcated anteriorly by the quadrate lobe of the liver, the stomach, lesser omentum and gastrocolic ligament. Posteriorly it is marked by the pancreas. Its left lateral margin is made by the left kidney and adrenal gland. Its boundary on the right is made by the epiploic foramen and lesser omentum.^[1] If these structures rupture they may leak into the lesser sac. For the stomach, which lies anterior to the omental bursa, the rupture must be on the posterior side; if it were anteriorly located, the leak would collect in the greater sac.

The lesser sac is embryologically formed from an infolding of the greater omentum. The open end of the infolding, known as the epiploic foramen, is usually proximal to the stomach.

Additional images

Schematic figure of the bursa omentalis, etc. Human embryo of eight weeks.
Diagrams to illustrate the development of the greater omentum and transverse mesocolon.
Omental bursa

References

^ Shahani RB, Bijlani RS, Dalvi AN, Shah HK, Samsi AB. Massive upper gastrointestinal haemorrhage due to direct visceral erosion of splenic artery aneurysm. J Postgrad Med 1994;40:220–2. Full Text.

External links

"Lesser sac". Medcyclopaedia. GE. Archived from the original on 2012-02-05.
Anatomy photo:37:09-0100 at the SUNY Downstate Medical Center – "Abdominal Cavity: The Lesser Peritoneal Sac"
SUNY Anatomy Image 8070

UpToDate Contents

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1. 妊娠期間および出産予定日の出生前評価 prenatal assessment of gestational age and estimated date of delivery
2. 副腎の外科解剖学 surgical anatomy of the adrenal glands
3. 膵デブリドマン pancreatic debridement
4. 右および拡大右結腸切除：開放術 right and extended right colectomy open technique
5. 被包された膵液貯留 walled off pancreatic fluid collections including pseudocysts

English Journal

Sensitization of ovarian carcinoma cells with zoledronate restores the cytotoxic capacity of Vγ9Vδ2 T cells impaired by the prostaglandin E2 immunosuppressive factor: Implications for immunotherapy.

Lavoué V, Cabillic F, Toutirais O, Thedrez A, Dessarthe B, de La Pintière CT, Daniel P, Foucher F, Bauville E, Henno S, Burtin F, Bansard JY, Levêque J, Catros V, Bouet-Toussaint F.SourceFaculté de Médecine, EE 341 Biothérapies Innovantes, Université de Rennes 1, Rennes, France; Liver Metabolisms and Cancer, Inserm, UMR991, Rennes, France; Département de Gynécologie et d'Obstétrique, CHU Rennes, Rennes, France.
International journal of cancer. Journal international du cancer.Int J Cancer.2012 Aug 15;131(4):E449-62. doi: 10.1002/ijc.27353. Epub 2011 Dec 21.
Epithelial ovarian cancer (EOC) usually spreads into the peritoneal cavity, thereby providing an opportunity for intraperitoneal adoptive immunotherapy with Vγ9Vδ2 T lymphocytes, a T cell subpopulation endowed with high lytic properties against tumor cells. However, previous studies have reported
PMID 22095289

IL-5 and IL-17A are critical for the chronic IgE response and differentiation of long-lived antibody-secreting cells in inflamed tissues.

Grund LZ, Komegae EN, Lopes-Ferreira M, Lima C.SourceImmunoregulation Unit, Special Laboratory of Applied Toxinology, Butantan Institute and Department of Immunology, University of São Paulo, São Paulo, Brazil.
Cytokine.Cytokine.2012 Aug;59(2):335-51. Epub 2012 May 24.
Prolonged survival of long-lived antibody-secreting cells in the BM has been implicated as a key component of long-term humoral immunity. The current study was designed to uncover the extrinsic signals required for the generation and maintenance of ASC in several niches (peritoneum, spleen and bone-
PMID 22633287