視神経腫瘍
WordNet
- any bundle of nerve fibers running to various organs and tissues of the body (同)nervus
- optical properties; "the optics of a telescope"
- the branch of physics that studies the physical properties of light
- an abnormal new mass of tissue that serves no purpose (同)tumour, neoplasm
PrepTutorEJDIC
- 〈C〉『神経』 / 〈C〉《複数形で》『神経過敏』,いらだち / 〈U〉『勇気』,度胸(courage) / 〈U〉《時にa ~》厚かましさ,ずぶとさ;無礼 / 〈C〉葉脈;(昆虫の)翅脈(しみゃく) / 〈人,特に自分〉‘に'力を与える,‘を'元気づける
- 光学
- (・・・を)選ぶ《+『for』+『名』》;(・・・するほうを)選ぶ《+『to』 do》
- 目の;視覚の
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/10/19 10:10:14」(JST)
[Wiki en表示]
An optic nerve melanocytoma is a tumor made up of melanocytes and melanin. These tumors are typically a benign; they can grow, but rarely transform into a malignancy. Even so, local growth can affect adjacent tissues.
Contents
- 1 Epidemiology
- 2 Symptoms
- 3 Diagnosis
- 4 References
Epidemiology
Most optic nerve tumors (65 percent) are gliomas that occur somewhere along the anterior visual pathway.[1]
Symptoms
Patients who have malignant gliomas of the optic nerve have rapidly progressive, painful visual loss accompanied by signs of an optic neuropathy. Initial visual loss may be unilateral or bilateral (chiasmal involvement), but rapid progression to bilateral blindness and death are constant features. Depending on the initial location of the tumor, visual loss may be accompanied by exophthalmos, extraocular motility
Optic nerve melanocytoma does not usually produce symptoms or grow. If they slowly grow, optic nerve melanocytoma can produce afferent pupillary defects (30%), subretinal fluid (10%), and an enlarged blind spot (75%).
On fundoscopic exam, the optic disc may be swollen, atrophic, or even normal.[1] Central retinal vein occlusion may occur.
If the tumor is next to the optic nerve, growth can compress the nerve and cause gradual loss of vision and unilateral proptosis.[2] Dyschromatopsia may occur.[1] Growth can also cause compressive vascular problems like central retinal vein occlusion. Lastly, growth also causes the tumor to exceed its blood supply. In these cases, necrotic areas form inside the tumor. Necrosis can (in turn) cause intraocular and rarely orbital inflammation.
Diagnosis
Most optic nerve melanocytomas are small, black, and do not grow.
References
- ^ a b c Yanoff, Myron; Duker, Jay S. (2008). Ophthalmology (3rd ed.). Edinburgh: Mosby. p. 981. ISBN 978-0323057516.
- ^ Goldman, Lee (2011). Goldman's Cecil Medicine (24th ed.). Philadelphia: Elsevier Saunders. p. 2430. ISBN 1437727883.
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Eye neoplasm (C69/D31, 190/224)
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| Melanoma |
- Uveal melanoma
- Ciliary body melanoma
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| Other |
- Medulloepithelioma/Diktyoma
- Intraocular lymphoma
- Orbital lymphoma
- Optic nerve sheath meningioma
- Optic nerve tumor
- Retinoblastoma
- Schwannoma
- Visual pathway glioma
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UpToDate Contents
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English Journal
- Reduction in serum aquaporin-4 antibody titers during development of a tumor-like brain lesion in a patient with neuromyelitis optica: a serum antibody-consuming effect?
- Aboulenein-Djamshidian F1, Höftberger R, Waters P, Krampla W, Lassmann H, Budka H, Vincent A, Kristoferitsch W.
- Journal of neuropathology and experimental neurology.J Neuropathol Exp Neurol.2015 Mar;74(3):194-7. doi: 10.1097/NEN.0000000000000173.
- Neuromyelitis optica (NMO) is an inflammatory demyelinating disease of the CNS with severe involvement of the optic nerve and spinal cord. Highly specific serum IgG autoantibodies (NMO-IgG) that react with aquaporin-4 (AQP4), the most abundant CNS water channel protein, are found in patients with NM
- PMID 25668569
- Interstitial radiotherapy using phosphorus-32 for giant posterior fossa cystic craniopharyngiomas.
- Yu X1, Zhang J, Liu R, Wang Y, Wang H, Wang P, Chen J, Liu S.
- Journal of neurosurgery. Pediatrics.J Neurosurg Pediatr.2015 Feb 13:1-9. [Epub ahead of print]
- OBJECT The treatment for giant posterior fossa cystic craniopharyngiomas remains an important challenge in neurosurgery. The authors evaluated the effects of treating 20 patients with giant posterior fossa cystic craniopharyngiomas using phosphorus-32 (P-32) interstitial radiotherapy at their hospit
- PMID 25679384
- Endoscopic transsphenoidal resection of sellar tumors with conchal sphenoid sinus: A report of two cases.
- Song Y1, Wang T1, Chen J1, Tan G1.
- Oncology letters.Oncol Lett.2015 Feb;9(2):713-716. Epub 2014 Nov 24.
- A conchal non-pneumatized sphenoid sinus was previously considered to be a contraindication to the endoscopic transsphenoidal route to the sella due to its small sellar floor and poor anatomical landmarks, such as the optic nerve canal, opticocarotid recess and internal carotid arteries canal. The p
- PMID 25621041
Japanese Journal
- 腫瘍壊死因子誘発視神経障害モデルと軸索保護 (平成24年度日本眼科学会学術奨励賞 受賞論文総説)
- Medial sphenoid wing meningioma の手術 : compartment formation に基づいた分類と手術の注意点について
- 宮原 宏輔,市川 輝夫,向原 茂雄,岡田 富,郭 樟吾,谷野 慎,瓜生 康浩,田中 悠介,久保田 純一,藤津 和彦
- 脳神経外科ジャーナル = Japanese journal of neurosurgery 21(9), 724-730, 2012-09-20
- … Medial sphenoid wing meningioma, at the advanced stage of its growth, creates several compartments partitioned by the internal carotid artery, Willis arterial ring and its perforators, the optic nerve, and the tentorial edge. … For example when infra-Willis portions of the tumor make the main attachment on the skull base, total removal is often difficult because these tumors tend to form more complicated compartments. …
- NAID 10031131634
- 髄膜腫圧迫と診断されるも,無治療で髄膜腫が縮小し視神経障害が改善した一例
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- Top of page Abstract Purpose To describe the clinical, neuroimaging, and pathologic features of primary tumours of the optic nerve and its sheath. Methods Review of published cases and personal series. Results The ...
★リンクテーブル★
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- 英
- optic nerve tumor, optic nerve neoplasm
- 関
- 視神経新生物
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- 関
- choice、choose、elect、elective、option、optional、prefer、select、selection、selective
[★]
- 関
- nervi、nervous、nervus、neural、neuro、neuron
[★]
- 関
- ocular、vision、visual
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- 関
- optical
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