hemorrhoidal plexus

直腸静脈叢

WordNet

1. a network of intersecting blood vessels or intersecting nerves or intersecting lymph vessels (同)rete
2. pain caused by venous swelling at or inside the anal sphincter (同)haemorrhoid, piles

PrepTutorEJDIC

1. (神経・血管などの)網状組織

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2017/08/03 21:38:41」(JST)

wiki en

[Wiki en表示]

Rectal venous plexus
Scheme of the anastomosis of the veins of the rectum.
The veins of the right half of the male pelvis.
Details
Drains to	Superior rectal vein
Identifiers
Latin	Plexus venosus rectalis, plexus haemorrhoidalis
Dorlands /Elsevier	p_24/12648664
TA	A12.3.10.010
FMA	18933
Anatomical terminology

The rectal venous plexus (or hemorrhoidal plexus) surrounds the rectum, and communicates in front with the vesical venous plexus in the male, and the uterovaginal plexus in the female.

A free communication between the portal and systemic venous systems is established through the rectal venous plexus.

Parts

It consists of two parts, an internal in the submucosa, and an external outside the muscular coat.

Internal plexus

The internal plexus presents a series of dilated pouches which are arranged in a circle around the tube, immediately above the anal orifice, and are connected by transverse branches.

This internal plexus is also known in some medical communities as the Irving plexus.

External plexus

• The upper part of the external plexus is drained by the superior rectal vein which forms the commencement of the inferior mesenteric vein, a tributary of the portal vein.
• The middle part of the external plexus is drained by the middle rectal vein which joins the internal iliac vein.
• The lower part of the external plexus is drained by the inferior rectal veins into the internal pudendal vein

Support

The veins of the hemorrhoidal plexus are contained in very loose connective tissue, so that they get less support from surrounding structures than most other veins, and are less capable of resisting increased blood-pressure.

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 痔核の治療 treatment of hemorrhoids
• 2. 痔核：臨床症状および診断 hemorrhoids clinical manifestations and diagnosis
• 3. Surgical treatment of hemorrhoidal disease
• 4. 産後ケアの概要 overview of postpartum care
• 5. クローン病の肛門合併症 perianal complications of crohn disease

English Journal

• Recurrent hemoperitoneum during pregnancy in large deep endometriosis infiltrating the parametrium.

• Stochino Loi E1, Darwish B1, Abo C1, Millischer-Bellaiche AE2, Angioni S3, Roman H4.
• Journal of minimally invasive gynecology.J Minim Invasive Gynecol.2016 Jan 27. pii: S1553-4650(16)00051-0. doi: 10.1016/j.jmig.2016.01.018. [Epub ahead of print]
• We present the case of a young woman at 16 weeks gestation who presented to a peripheral hospital with severe recurrent hemoperitoneum related to severe deep endometriosis infiltrating the left parametrium. She underwent two surgical open procedures in emergency, followed by pregnancy loss. Deep end
• PMID 26826678

• Advantages and limits of hemorrhoidal dearterialization in the treatment of symptomatic hemorrhoids.

• Giamundo P1.
• World journal of gastrointestinal surgery.World J Gastrointest Surg.2016 Jan 27;8(1):1-4. doi: 10.4240/wjgs.v8.i1.1.
• In the last two decades, hemorrhoidal dearterialization has become universally accepted as a treatment option for symptomatic hemorrhoids. The rationale for this procedure is based on the assumption that arterial blood overflow is mainly responsible for dilatation of the hemorrhoidal plexus due to t
• PMID 26843909

• Detection of autophagy in Hirschsprung's disease: implication for its role in aganglionosis.

• Huang Q1, Ge X, Li P, Duan Y, Guo Z, Zheng B, Wu X, Guo X, Gao Y.
• Neuroreport.Neuroreport.2015 Dec 2;26(17):1044-50. doi: 10.1097/WNR.0000000000000465.
• Hirschsprung's disease (HD) is a common congenital gastrointestinal malformation, characterized by the lack of ganglion cells from the distal rectum to the proximal bowel, but the pathogenesis is not well understood. This paper evaluates the effects of autophagy in HD. Using electron microscopy, the
• PMID 26509546

Japanese Journal

• 日本人における肛門部神経要素の形態学的研究:第4報 肛門管上皮及び上皮下結合織内の神経線維及び神経終末

• 永井 克彦
• 日本大腸肛門病学会雑誌 27(2), 182-199,283, 1974
• 肛門管上皮および上皮下結合織の神経要素は3つのoriginがある.第1はMeissner神経叢で胎児・新生児の内肛門括約筋上端の僅かな部にあり,以後の年齢では明らかでない.<BR>第2は骨盤腟内から縦走筋部に来た外来神経線維で内肛門括約筋から出るものと内肛門括約筋下端を潜ってくるものがある.胎児に最も多く,年齢と共に少くなる.<BR>第3の神経要素は骨盤腔外から外肛門括約筋 …
• NAID 130000782105

• 内痔核の新しい進展度分類とその治療

• 宇井 豊
• 日本大腸肛門病学会雑誌 27(3), 316-320,363, 1974
• 今迄の内痔核の治療法は外用薬(軟膏,坐薬)および内服薬による保存的療法または手術的療法という2つが治療の主体であった.前者は効果に限界があり,後者は侵襲が大きすぎる.その中間的療法として注射硬化療法とゴム輪結紮法を加え,この4つの治療法を内痔核の進展度に応じて適用した.そのためには内痔核を在来の3～4期に分類する法では不十分である.そこで私は両弁型肛門鏡を用い視診のみにより,各場所毎の痔核の大きさ …
• NAID 130000782090

---

★リンクテーブル★

リンク元	「直腸静脈叢」
関連記事	「plexus」「plexuses」

「直腸静脈叢」

　　[★]

英

rectal venous plexus, hemorrhoidal plexus

ラ

plexus venosus rectalis

「plexus」

　　[★]

神経叢

関

plexal、plexuses

　 　

「plexuses」

　　[★]

神経叢

関

plexal、plexus