damage to Meyer Loopcaused by a lesion in the right inferior temporal lobe, specifically the right fusiform gyrus (PCA region)
→contralateral upper homonymous quadrantanopia
¥the major cause of prosopagnosia (inability to recognize faces)
→right ventral occipitotemporal cortex
(fusiform face area(FFA)) neurologyneurosurgeryAmboss level4 Dec 18, 2019, 9:34 PM HirotoShishido
pilocytic astrocytoma
region, histology, characteristics on imaging(Juvenile) pilocytic astrocytomas usually arise in the ☆cerebellum, brainstem, hypothalamic region, or optic pathways.
Microscopically, pilocytic astrocytomas are well-differentiated neoplasms comprised of ☆spindle cells with hair-like glial processes that are associated with microcysts. These cells are mixed with ☆Rosenthal fibers and granular eosinophilic bodies.
inferior→ input(ipsilateral proprioceptive information, spinocerebellar tract→ cerebellar cortex(vermis of anterior lobe)) neurosurgeryneurology Dec 22, 2019, 12:14 AM HirotoShishido
the first manifestation caused by cavernous carotid aneurysmCNⅥ
→ initially cause diplopia as CNⅥ runs next to the ICA neurologyneurosurgeryUWorld Jul 7, 2020, 4:19 AM HirotoShishido
sensory spinal tract
homunculusthe closer to the first neuron cell body the fibers are located, the upper parts of the body innervated by these fibers get
PRL産生腫瘍か非機能性腺腫か下垂体腺腫の治療の第一選択は，PRL産生下垂体腺腫は薬物療法（ドパミン作動薬：ブロモクリプチン，テルグリド，カベルゴリン），その他の腫瘍（GH産生下垂体腺腫，非機能性下垂体腺腫など）では手術である．一般的にプロラクチン産生下垂体腺腫のプロラクチン値は200ng/mL以上となる（実際には数千もの高値をとることもある）．PRL 34.8ng/mLが下垂体茎圧迫による軽度上昇の範囲 neurologyneurosurgery国試 Aug 24, 2020, 8:15 PM HirotoShishido
onset of complications of subarachnoid hemorrhage(SAH)・vasospasm occurs in approx. 30% of patients with SAH 3–10 days(especially 7,8 days) after SAH
・recurrent bleeding occurs in 4–14% of patients with SAH in the first 24 hours (especially in the first 2–12 hours after SAH)
・Hydrocephalus
Occurs in 20–30% of patients with SAH
①Acute obstructive hydrocephalus
Usually occurs within minutes to hours after SAH
② Chronic communicating hydrocephalus
Usually occurs weeks or months after SAH neurologyneurosurgeryUWorld Jun 12, 2020, 12:17 AM HirotoShishido
orbital apex syndromea collection of cranial nerve deficits associated with a mass lesion near the apex of the orbit of the eye
