後下小脳動脈
- 同
- 後下小脳動脈,PICA
WordNet
- of or characteristic of low rank or importance
- one of lesser rank or station or quality
- having an orbit between the sun and the Earths orbit; "Mercury and Venus are inferior planets"
- lower than a given reference point; "inferior alveolar artery"
- of low or inferior quality
- located at or near or behind a part or near the end of a structure
- a major thoroughfare that bears important traffic
- a blood vessel that carries blood from the heart to the body (同)arteria, arterial blood vessel
- relating to or associated with the cerebellum; "cerebellar artery"
PrepTutorEJDIC
- (階級・親分・質・程度などが)『下の』,『劣る』, / (位置が)低い,下方の / 目下の者;劣った人
- 《名詞の前にのみ用いて》(生物学的に,位置が)後ろの,後部の / (時間・順序が)後の;(…より)後の《+『to』+『名』》(later) / しり(buttocks)
- 動脈 / (道路・水路・鉄道などの)勘線,(通信の)主チャンネル
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/12/21 13:58:45」(JST)
[Wiki en表示]
| Posterior inferior cerebellar artery |
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The three major arteries of the cerebellum: the SCA, AICA, and PICA. (Posterior inferior cerebellar artery is PICA.)
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Diagram of the arterial circulation at the base of the brain. (PICA is labeled at bottom right.)
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| Details |
| Latin |
arteria cerebelli inferior posterior |
| Supplies |
cerebellum, choroid plexus of the fourth ventricle |
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Source
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vertebral artery |
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Branches
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medial branch
lateral |
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Vein
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inferior cerebellar veins |
| Identifiers |
| Gray's |
p.580 |
Dorlands
/Elsevier |
a_61/12154613 |
| TA |
A12.2.08.012 |
| FMA |
FMA:50518 |
| Anatomical terminology |
The posterior inferior cerebellar artery (PICA), the largest branch of the vertebral artery, is one of the three main arterial blood supplies for the cerebellum, part of the brain. Occlusion of the posterior inferior cerebellar artery or one of its branches, or of the vertebral artery leads to Wallenberg syndrome, also called lateral medullary syndrome.
Course
It winds backward around the upper part of the medulla oblongata, passing between the origins of the vagus and accessory nerves, over the inferior cerebellar peduncle to the undersurface of the cerebellum, where it divides into two branches.
The medial branch continues backward to the notch between the two hemispheres of the cerebellum; while the lateral supplies the under surface of the cerebellum, as far as its lateral border, where it anastomoses with the anterior inferior cerebellar and the superior cerebellar branches of the basilar artery.
Branches from this artery supply the choroid plexus of the fourth ventricle.
Diseases
Infarction of this artery due to thrombosis or a stroke leads to posterior inferior cerebellar artery syndrome (PICA syndrome), also known as lateral medullary syndrome, or Wallenberg syndrome. Severe occlusion of this or vertebral arteries could lead to Horner's Syndrome as well.
External links
- DDB 10449
- Anatomy photo:28:09-0225 at the SUNY Downstate Medical Center
- Anatomy diagram: 13048.000-1 at Roche Lexicon - illustrated navigator, Elsevier
The arteries of the base of the brain. Posterior inferior cerebellar artery labeled at bottom. The temporal pole of the cerebrum and a portion of the cerebellar hemisphere have been removed on the right side. Inferior aspect (viewed from below).
This article incorporates text from a public domain edition of Gray's Anatomy.
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List of arteries of head and neck (TA A12.2.05–08, GA 6.549)
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| CC |
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EC
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sup. thyroid
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- superior laryngeal
- sternocleidomastoid branch
- infrahyoid branch
- cricothyroid branch
- glandular branches
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asc. pharyngeal
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- posterior meningeal
- pharyngeal branches
- inferior tympanic
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lingual
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- suprahyoid
- dorsal lingual
- deep lingual
- sublingual
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facial
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- cervical branches (ascending palatine, tonsillar, submental, glandular)
- facial branches (inferior labial
- superior labial / nasal septum
- lateral nasal
- angular)
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occipital
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- sternocleidomastoid
- meningeal
- occipital
- auricular
- descending
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post. auricular
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- stylomastoid
- stapedial
- auricular
- occipital
- Parotid
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sup. temporal
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- transverse facial
- middle temporal (zygomatico-orbital)
- anterior auricular
- frontal
- parietal
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maxillary
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1st part / mandibular
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- anterior tympanic
- deep auricular
- middle meningeal (superior tympanic, petrosal)
- accessory meningeal
- inferior alveolar (mental, mylohyoid)
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2nd part / pterygoid
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- to muscles of mastication (deep temporal, pterygoid, masseteric)
- buccal
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3rd part / pterygopalatine
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- posterior superior alveolar
- infraorbital (anterior superior alveolar)
- descending palatine (greater palatine, lesser palatine)
- artery of the pterygoid canal
- sphenopalatine (posterior septal branches, posterior lateral nasal)
- pharyngeal
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IC
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cervical
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petrous
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cavernous/
ophthalmic
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- orbital group:anterior ethmoidal (anterior septal, anterior lateral nasal, anterior meningeal)
- posterior ethmoidal
- lacrimal (lateral palpebral)
- medial palpebral
- terminal (supraorbital, supratrochlear, dorsal nasal)
ocular group: central retinal
- ciliary (short posterior, long posterior, anterior)
- hypophysial (superior, inferior)
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Willis/Cerebral
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- ACA (anterior communicating, medial striate)
- MCA (anterolateral central, Orbitofrontal artery, Prefrontal artery, Superior terminal branch, Inferior terminal branch, Anterior temporal branch)
- posterior communicating
- anterior choroidal
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| SC |
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vertebral artery
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- meningeal
- spinal (posterior, anterior)
- basilar: pontine
- labyrinthine
- cerebellar (AICA, SCA, PICA)
- cerebral (PCA)
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thyrocervical trunk
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inferior thyroid
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- inferior laryngeal
- tracheal
- esophageal
- ascending cervical
- pharyngeal
- glandular branches
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transverse cervical
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- superficial branch
- deep branch / dorsal scapular
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suprascapular
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costocervical trunk
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- deep cervical
- Supreme Intercostal artery
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anat (a:h/u/t/a/l,v:h/u/t/a/l)/phys/devp/cell/prot
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noco/syva/cong/lyvd/tumr, sysi/epon, injr
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proc, drug (C2s+n/3/4/5/7/8/9)
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UpToDate Contents
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- 1. 後方循環系の脳血管症候群 posterior circulation cerebrovascular syndromes
English Journal
- Developmental anomalies of the distal vertebral artery and posterior inferior cerebellar artery: diagnosis by CT angiography and literature review.
- Kim MS1.
- Surgical and radiologic anatomy : SRA.Surg Radiol Anat.2016 Nov;38(9):997-1006. Epub 2016 Feb 22.
- PURPOSE: The aim of this study was to identify variations in the anatomy of the distal vertebral artery (VA) and posterior inferior cerebellar artery (PICA) with computed tomography (CT) angiography.METHODS: CT angiography was performed at two hospitals. And the results were analyzed for VA anomalie
- PMID 26899969
- Safety and efficacy of treatment strategies for posterior inferior cerebellar artery aneurysms: a systematic review and meta-analysis.
- Petr O1,2, Sejkorová A3,4,5, Bradáč O6, Brinjikji W7, Lanzino G3.
- Acta neurochirurgica.Acta Neurochir (Wien).2016 Oct 7. [Epub ahead of print]
- INTRODUCTION: We conducted a systematic review of the literature to evaluate the safety and efficacy of treatment strategies for PICA aneurysms.METHODS: A systematic search of Medline, EMBASE, Scopus, and Web of Science was done for studies published through November 2015. We included studies that d
- PMID 27718027
- Endovascular treatment of PICA aneurysms with a Low-profile Visualized Intraluminal Support (LVIS Jr) device.
- Samaniego EA1, Abdo G2, Hanel RA3, Lima A3, Ortega-Gutierrez S4, Dabus G5.
- Journal of neurointerventional surgery.J Neurointerv Surg.2016 Oct;8(10):1030-3. doi: 10.1136/neurintsurg-2015-012070. Epub 2015 Nov 3.
- OBJECTIVE: To describe the treatment of posterior inferior cerebellar artery (PICA) aneurysms with the Low-profile Visualized Intraluminal Support Device (LVIS Jr) stent.MATERIALS AND METHODS: The databases of three institutions were retrospectively reviewed. Patients who underwent endovascular trea
- PMID 26534868
Japanese Journal
- 妊娠38 週に右後下小脳動脈瘤破裂によるくも膜下出血を来した1 例
- 木村 啓佑,栗本 太志,阿部 節,田島 隼人,中村 茂和,渡邉 和彦
- 脳卒中, 2019
- … ・嘔吐あり当院救急搬送された．当院到着直後に意識レベル低下しJapan Coma Scale（JCS）：200 となった．直ちに頭部CT 検査施行し，右小脳に血腫を伴うくも膜下出血と右posterior inferior cerebellar artery（PICA）に動脈瘤を認めた．母体状態不安定であったため脳外科手術を先行することも考慮されたが，妊娠に伴い腹臥位困難と思われ，胎児娩出可能な状態であったこ …
- NAID 130007688943
- A 29-year-old Woman with Recurrent Pregnancy-induced Hypertension Based on Vascular Compression of the Medulla Oblongata
- Akaishi Tetsuya,Tominaga Teiji,Ishii Tadashi,Kiyomoto Hideyasu,Abe Michiaki,Okuda Hiroshi,Ishizawa Kota,Endo Toshiki,Miyata Masahiro,Nakayama Keisuke,Ito Sadayoshi
- Internal Medicine 58(15), 2257-2261, 2019
- … We suspected medullary compression by the curved posterior inferior cerebellar artery as the cause of her intractable hypertension, and she underwent Jannetta's decompression surgery. …
- NAID 130007686858
- 急性期にステント支援下コイル塞栓術を行い，慢性期にOA‒PICA bypass併用trapping術を施行した破裂解離性椎骨動脈瘤の１例
- 乾 敏彦,古部 昌明,須山 武裕,端 和夫
- NEUROSURGICAL EMERGENCY 24(1), 72-77, 2019
- … 59歳男性，突然の頭痛にて近医受診，診察中に意識レベル低下し，緊急頭部CTにてクモ膜下出血が認められ当院に搬送された．来院時JCS 200，WFNS grade VのSAHで，病変はPICAを含む右解離性椎骨動脈瘤（vertebral artery dissecting aneurysm: VADA）であった．重症例であり，血管内治療による迅速な治療が必要と考えられた．不整形の瘤であるためステント支援下コイル塞栓術（stent‒assisted coiling: SAC）を行った．術後経過は良好でmRS …
- NAID 130007623453
Related Links
- Posterior inferior cerebellar artery (PICA) is one of the three vessels that provide arterial supply to the cerebellum. It is the most variable cerebral artery.Gross anatomyOriginIts origin is also variable: 18-20% arise extracranially, inferior ...
- Looking for online definition of cerebellar artery, posterior inferior in the Medical Dictionary? cerebellar artery, posterior inferior explanation free. What is cerebellar artery, posterior inferior? Meaning of cerebellar artery, posterior ...
★リンクテーブル★
[★]
- 英
- cerebellum
発生
解剖
-
血管
機能概要
- 運動のタイミング決定と一つの運動から次の運動への急速な切り替え
機能
- ①運動開始に関与
- ②運動学習に関与
- ③多関節にわたる運動に関与
- ④フィードバックモード、フィードフォワードモードに関与
-
- 熟練した運動で、早く動かさないとき
- 素早い運動を行うとき。学習を行うとき
入力経路
障害 (KAPLAN USMLE STEP 1 QBOOK p.54)
障害
-
- 体幹失調=姿勢の制御不良
- 失調性歩行
- 注視方向への眼振(注意方向性眼振=注視眼振)
- Tomberg兆候(-)(両側をそろえて開眼して立つ、その後閉眼しても倒れない)
- 体幹筋失調による歩行障害(体幹歩行失調, 失調性歩行)
- 四肢の運動失調(協調運動障害)
- ①推尺障害
- ②変換運動障害
- ③運動解離
- ④共同運動不能
- ⑤失調性構音障害
臨床関連
[★]
- 英
- posterior inferior cerebellar artery (KH) , PICA
- ラ
- arteria cerebelli inferior posterior
- 関
- 椎骨動脈、大脳動脈、前下小脳動脈
起始
走行
- 延髄と小脳の間の凹みに入り込んで背側に回り込む
- 延髄の下部あたりで分岐し、副神経の枝を通り抜けつつ背面に向かう (N.134)
分布
- 延髄両側を支配し、小脳に枝を出す。(CNUR.48)
- 小脳の後下面
枝
臨床関連
- ワレンベルグ症候群：CN X, CN XI, CN XIIの脳神経核がある部位は後下小脳動脈が支配しており、この動脈の閉塞により延髄外側部の梗塞が生じて発症する。
[★]
後下小脳動脈症候群
[★]
- 関
- after、afterward、afterwards、backward、behind、following、late、post、posteriorly、subsequent
[★]
- 関
- inferio、inferiorly、infra、lower、recessive、recessively、recessiveness
[★]
- 関
- inferior、inferiorly、infra、lower、sub、underneath
[★]
- 関
- cerebelli、cerebellum