神経鞘腫
WordNet
- tumor (usually benign) of the sheath surrounding a nerve
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/05/11 12:16:57」(JST)
[Wiki en表示]
Schwannoma |
Micrograph of a schwannoma showing both a cellular Antoni A area (center and right of image) and a loose paucicellular Antoni B area (left edge of image). HPS stain.
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Classification and external resources |
Specialty |
oncology |
ICD-10 |
C72.4 |
ICD-9-CM |
225.1 |
ICD-O |
M9560/0 |
DiseasesDB |
33713 |
MeSH |
D009442 |
[edit on Wikidata]
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A schwannoma (also known as an "neurilemoma,"[1]:621 "neuroma,"[2] "neurolemoma,"[2] and "Schwann cell tumor"[2]) is a benign nerve sheath tumor composed of Schwann cells, which normally produce the insulating myelin sheath covering peripheral nerves.
Schwannomas are homogeneous tumors, consisting only of Schwann cells. The tumor cells always stay on the outside of the nerve, but the tumor itself may either push the nerve aside and/or up against a bony structure (thereby possibly causing damage). Schwannomas are relatively slow-growing. For reasons not yet understood, schwannomas are mostly benign and less than 1% become malignant, degenerating into a form of cancer known as neurofibrosarcoma. These masses are generally contained within a capsule, and so surgical removal is often successful.[3]
Schwannomas can be associated with neurofibromatosis type II, which may be due to a loss-of-function mutation in the protein merlin.[4] They are universally S-100 positive, which is a marker for cells of neural crest cell origin.
Schwannomas of the head and neck are a fairly common occurrence and can be found incidentally in 3-4% of patients at autopsy.[5] Most common of these is an acoustic neuroma, a tumor of the vestibulocochlear nerve that may lead to tinnitus and hearing loss on the affected side. Outside the cranial nerves, schwannomas may present on the flexor surfaces of the limbs. Rare occurrences of these tumors in the penis have been documented in the literature.[6]
Verocay bodies are seen histologically in schwannomas.
Contents
- 1 See also
- 2 Additional images
- 3 References
- 4 See also
See also
- Intranodal palisaded myofibroblastoma
- List of inclusion bodies that aid in diagnosis of cutaneous conditions
Additional images
References
- ^ James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. ISBN 0-7216-2921-0.
- ^ a b c Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 1-4160-2999-0.
- ^ Biswas, Deb (September 2007). "Extracranial head and neck schwannomas—A 10-year review". Auris Nasus Larynx 34 (3): 353–359.
- ^ Hanemann, CO (December 2006). "News on the genetics, epidemiology, medical care and translational research of Schwannomas". Journal of Neurology 253 (12): 1533-1541.
- ^ Hanemann, CO (December 2006). "News on the genetics, epidemiology, medical care and translational research of Schwannomas". Journal of Neurology 253 (12): 1533-1541.
- ^ Nguyen, Austin Huy; Smith, Megan; Maranda, Eric; Punnen, Sanoj (24 December 2015). "Clinical Features and Treatment of Penile Schwannoma: A Systematic Review". Clinical Genitourinary Cancer. doi:10.1016/j.clgc.2015.12.018.
See also
- Neurofibroma
- Vestibular schwannoma (Acoustic neuroma)
Nervous tissue tumors/NS neoplasm/Neuroectodermal tumor (ICD-O 9350–9589) (C70–C72, D32–D33, 191–192/225)
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Endocrine |
Sellar: |
- Craniopharyngioma
- Pituicytoma
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Other: |
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CNS |
Neuroepithelial
(brain tumors,
spinal tumors) |
Glioma |
Astrocyte |
- Astrocytoma
- Pilocytic astrocytoma
- Pleomorphic xanthoastrocytoma
- Subependymal giant cell astrocytoma
- Fibrillary astrocytoma
- Anaplastic astrocytoma
- Glioblastoma multiforme
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Oligodendrocyte |
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Ependyma |
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Choroid plexus |
- Choroid plexus tumor
- Choroid plexus papilloma
- Choroid plexus carcinoma
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Multiple/unknown |
- Oligoastrocytoma
- Gliomatosis cerebri
- Gliosarcoma
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Mature
neuron |
- Ganglioneuroma: Ganglioglioma
- Retinoblastoma
- Neurocytoma
- Dysembryoplastic neuroepithelial tumour
- Lhermitte–Duclos disease
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PNET |
- Neuroblastoma
- Esthesioneuroblastoma
- Ganglioneuroblastoma
- Medulloblastoma
- Atypical teratoid rhabdoid tumor
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Primitive |
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Meningiomas
(Meninges) |
- Meningioma
- Hemangiopericytoma
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Hematopoietic |
- Primary central nervous system lymphoma
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PNS: NST |
- Cranial and paraspinal nerves: Neurofibroma
- Neurofibrosarcoma
- Neurofibromatosis
- Neurilemmoma/Schwannoma
- Malignant peripheral nerve sheath tumor
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Note: Not all brain tumors are of nervous tissue, and not all nervous tissue tumors are in the brain (see brain metastasis).
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UpToDate Contents
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English Journal
- Large foot schwannoma with bone invasion - A case report.
- Flores Santos F1, Pinheiro M2, Felicíssimo P3.
- Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons.Foot Ankle Surg.2014 Jun;20(2):e23-6. doi: 10.1016/j.fas.2014.01.003. Epub 2014 Jan 30.
- A rare case of a large foot schwannoma with an intraosseous component is presented. Due to suspicion of malignancy, an amputation had previously been proposed. When the patient presented to us, the prolonged clinical course as well as some elements of the imaging exams suggested benignancy and we de
- PMID 24796841
- Neurofibromatosis type 2 and its head and neck manifestations: Literature review and population study in the Community of Cantabria and the province of Las Palmas.
- Guerra-Jiménez G1, Camargo Camacho P2, Ramos-Macías A3, Morales Angulo C4.
- Acta otorrinolaringologica espanola.Acta Otorrinolaringol Esp.2014 May - June;65(3):148-156. doi: 10.1016/j.otorri.2013.12.001. Epub 2014 Feb 28.
- INTRODUCTION AND OBJECTIVES: Neurofibromatosis type 2 (NF2) is an infrequent autosomal dominant disease characterised by the appearance of viii nerve schwannomas, meningiomas and ocular abnormalities. Incidence of 1:25,000 and prevalence above 1:80,000 are estimated in general. The objectives of our
- PMID 24582430
- Giant schwannoma of the first metatarsal: a rare entity.
- Ansari MT1, Rastogi S2, Khan SA3, Yadav C3, Rijal L4.
- The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons.J Foot Ankle Surg.2014 May-Jun;53(3):335-9. doi: 10.1053/j.jfas.2014.01.014. Epub 2014 Mar 20.
- Schwannomas of osseous origin are rare, and schwannomas of the short tubular bones are even rarer. These benign-looking tumors are difficult to diagnose using imaging alone. However, histopathologic evaluation of a biopsy specimen can establish the diagnosis by identifying Antoni type A and B zones.
- PMID 24656765
Japanese Journal
- 棚平 健,藤本 徹,谷脇 琢也,岡田 龍哉,田畑 聖吾,杉本 一樹,寺本 周平,水田 博志
- 整形外科と災害外科 64(2), 281-283, 2015
- 胸髄硬膜内髄外に発生した嚢腫性神経鞘腫の1例を経験したので報告する.症例は45歳,女性で,主訴は右背部,右側胸部痛であった.2年ほど前から右背部,右側胸部痛があり,疼痛が持続するためMRIを撮像したところ,第5から第6胸椎レベルに腫瘍性病変を認めた.造影MRI検査で強いring enhancementを呈する点が他の腫瘍性病変との鑑別に有用であった.病理所見で,嚢腫壁はシュワン細胞性の紡錘形細胞が …
- NAID 130005071274
- 臨床経験 嚢胞形成を伴った迷走神経肺枝由来葉間部神経鞘腫
- 松岡 隆久,今西 直子,長井 信二郎
- 胸部外科 = The Japanese journal of thoracic surgery 67(12), 1085-1088, 2014-11
- NAID 40020244245
- 機器 上頸部神経鞘腫手術におけるNerve Integrity Monitoring (NIM)の有用性
Related Links
- neurilemoma [noor″ĭ-lĕ-mo´mah] a tumor of a neurilemma (peripheral nerve sheath); called also schwannoma and neurinoma. neu·ri·no·ma (nū'ri-nō'mă), Obsolete term for schwannoma. neurinoma /neu·ri·no·ma/ (-no´mah) neurilemoma.
- neurinoma.htmlTEXTMW2J 4 $ lッ留cッ留c=ン; Brain Tumor/脳腫瘍 神経鞘腫・neurinoma (C)T.Fujimaki : all the copyrights of this page belong to Fujimaki T 脳からは12対の脳神経と呼ばれる神経が出ています。視神経(ものを ...
Related Pictures
★リンクテーブル★
[★]
- 英
- brain tumor, cerebral tumor
- 同
- 脳新生物 brain neoplasm
- 関
- 頭蓋内腫瘍
概念
分類
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疫学
- 発生率:10万人対10-15人。罹患率:10万人対46人 →
腫瘍別発生頻度
YN.J.188
小児の脳腫瘍
- SCN.173
- 腫瘍:星細胞腫、髄芽腫、頭蓋咽頭腫、胚細胞腫、上衣腫の順に多い。
- 部位:1歳まではテント上、2-7歳まではテント下、8-15歳まではテント上に多い。
- SRA.163
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後発年齢
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好発部位
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小脳星細胞腫
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5~10歳
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小脳半球
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髄芽腫
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5~10歳(男児に多い)
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小脳虫部から発生
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頭蓋咽頭腫
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10~15歳
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トルコ鞍上部
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上衣腫
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10~15,30~40歳
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第四脳室、側脳室
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髄芽腫
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10~30歳
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松果体部、トルコ鞍上部
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脳幹部膠腫
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~15歳
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橋
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視神経膠腫
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~15歳
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視神経視交叉
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放射線感受性
- SCN.173
転移性脳腫瘍
- 肺癌(約半数)、乳癌、消化器癌、腎癌
- 頻度:肺癌>乳癌>胃・腸癌 (SCN.173)
石灰化が見られる脳腫瘍
- 乏突起膠腫:CT上、低吸収領域の中に石灰化がみられる。(SCN.173)
- 上衣腫:CT:(単純CT)等~低吸収、(造影CT)中~強度の増強。小嚢胞や壊死、石灰化を認める
- 髄膜腫:腫瘍の一部石灰化が少なからず見られる
- 頭蓋咽頭腫:小児において石灰沈着が高頻度にみられる。
嚢胞性腫瘍
参考
- http://www.gsic.jp/cancer/cc_19/hc/02.html
- 1-1. がんサポートセンター 脳腫瘍 フローチャート
- http://www.gsic.jp/cancer/cc_19/hc/cc_19_021.html
- http://www.ebm.jp/disease/brain/07noshuyo1/guide.html
- http://ganjoho.ncc.go.jp/public/cancer/data/brain_adult.html
- http://ganjoho.ncc.go.jp/public/cancer/data/brain_child.html
- http://www.geocities.jp/ululu_o_ululu/report-11.html
国試
[★]
- 英
- neurinoma, neurilemoma
- 同
- シュワン細胞腫 Schwannoma、シュワン腫
- 関
- 脳腫瘍
概念
- 良性腫瘍
- 原発性脳腫瘍全体の10%
- 神経鞘腫の約90%はCN VIII原発(聴神経鞘腫)。その中でも前庭神経に由来するものが多い。
疫学
- 30-60歳に好発
- 男女比=1:1.3-1.5
- 前庭神経(神経鞘腫の90%を占める)>三叉神経>舌咽・迷走・副神経、顔面神経、舌下神経、滑車神経
遺伝性
病理
- 薄い皮膜
- 柔らかい
- 黄白色、赤褐色で易出血性。
- Antoni A型とAntoni B型が混在
症状
- 1. 初発症状:難聴(言語識別能の低下、高音域での聴力低下)、耳鳴り。15%の症例で突発性難聴で初発。5%の症例でめまいで初発。
- 2. 進展して三叉神経を障害:角膜反射の消失。顔面神経は障害されにくい。
- 3. 進展して小脳、脳幹を障害:四肢の運動失調、歩行障害
- 4. 進展して第4脳室の閉塞、テント切痕部での髄液の通過障害:水頭症による頭蓋内圧亢進症状。
- 5. 下方に進展した場合:舌咽神経、迷走神経などの下位脳神経障害:嚥下障害
検査
画像検査
- T1:低信号
- T2:高信号
- Gd造影:均一に強く造影
[★]
- 関
- malignant peripheral nerve sheath tumor、MPNST、nerve sheath neoplasm、neurilemmoma、neurilemoma、neurinoma、peripheral nerve sheath tumor
[★]
神経線維鞘腫 neurinoma