Andreas Charidimou MD, PhD Profile picture
Nov 6, 2022 7 tweets 7 min read Read on X
🌓🤪 Pac-Man ate my visual fields!

50 year old person presents with sudden onset headache and seeing "pieces of things" on the R.
Visual fields look like this👇👇

➡️What's happening?

#MedTwitter #MedStudentTwitter #neurotwitter #MedEd #Neurology #EndNeurophobia #stroke Image
🗺️🧠 Where across the visual system is likely the lesion?
#Ophthalmology
⭕️ Which artery has to be implicated, if this presentation is due to an ischemic #stroke and the rest of the neuro exam is normal?
➡️Answers:
- L lateral geniculate body (LGB): a highly organized, layered retinotopic structure
- L. Lat. post. choroidal a. infarct (PCA branch)

PAC-man visual field defects=wedge shaped
aka "homonymous sectoranopsias"
#neurotwitter Image
⭕️ Blood supply / 👁️ Visual pathway segments

via: @FredLepore

🗞️FB Walsh J. Neurosurg 9:517-37 (1952)

#MedTwitter #neurotwitter #EndNeurophobia #FOAMrad #NeuroRad #Neurology #Neurosurgery #stroke #Ophthalmology #Neuroophthalmology Image
Here is another nice case, this time of quadruple sectoranopia due to LGB infarct

via: @PracticalNeurol
pn.bmj.com/content/10/3/1… Image

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More from @a_charidimou

Mar 10
🧵👇Cerebral Amyloid Angiopathy🩸🧠

Illustrations and tweetorials on CAA, SVD and related disorders

by @a_charidimou

#NeuroTwitter #stroke #Neurology #neuropath #stroke #dementia #Alzheimers #biomarker #brain #MedStudentTwitter #AmyloidAngiopathy #CAA #cSVDImage
🧠⭕️Cerebral Small Vessel Disease Classification
Cerebral Amyloid Angiopathy Classification
Read 66 tweets
Feb 19, 2023
Beating Clinical MCQs in #USMLE or #boards2023 when you don’t know the answer! 🩺📝

🧵👇Check out 10 strategies to approach this challenge

#MedTwitter #MedEd #IMG #ECFMG #foamed #medicalstudent #internalmedicine #BoardExams #medicaleducation
Don't panic! 😱

Try to work through the question, use strategies below to narrow down the choices and make an educated guess. 💪🤔💡

1/10
General approach to MCQs: Reverse reading 📖🔙💭

a) read the MCQ starting at the last sentence in the stem (the actual question)
b) glance over the answer options
c) then work your way back to the stem

🧠I find this an effective technique to prompt & orient the brain.

2/10
Read 11 tweets
Nov 7, 2022
🩸🧠What’s new in Cerebral Amyloid Angiopathy?

🚀Updates from the 8th International CAA Conference
#iCAAPerth2022 🌏🇦🇺
..and my take (denoted by:🧔🏻)

*Focus of 🧵 will be on clinical/translational aspects*

#AmyloidAngiopathy #neurotwitter #stroke #Neurology #dementia #NeuroRad
🔥🧠CAA-ri (CAA-related inflammation)

@Ellis_van_Etten provided a clinical update on CAA-ri
-Key need for improving diagnostic tools and clarifying best 🧯treatment options

🧔🏻: Subclinical, non-fulminant CAA-ri forms are beginning to be appreciated!

/2
🔥🧠CAA-ri

Focal microglial activation found in areas of edema, also correlating with anti-Aβ autoAbs CSF levels
via: @iCABNetwork @Prof_Piazza

🧔🏻: we urgently need validation of 🧪CSF anti-Aβ Abs for clinical use-will be a game changer in CAA-ri
n.neurology.org/content/99/12/…
/3
Read 24 tweets
Oct 2, 2022
⭕️ Vascular supply /🧠 Regions

🚀The whole lineup (10x🧵)

via: @HBlumenfeld
(🔖NEUROANATOMY through Clinical Cases)

#MedTwitter #MedStudentTwitter #neurotwitter #FOAMrad #NeuroTwitter #NeuroRad #neuroradiology #Neurology #Neurosurgery #radiology #stroke #neuroscience Image
⭕️Circle of Willis 🐳🧠 - Main Branches

via: @HBlumenfeld
(🔖NEUROANATOMY through Clinical Cases)

#MedTwitter #MedStudentTwitter #neurotwitter #FOAMrad #NeuroTwitter #NeuroRad #neuroradiology #Neurology #Neurosurgery #radiology #stroke #neuroscience
1/🧵 Image
⭕️ ACA & PCA /🧠 - medial surface

via: @HBlumenfeld
(🔖NEUROANATOMY through Clinical Cases)

#MedTwitter #MedStudentTwitter #neurotwitter #FOAMrad #NeuroTwitter #NeuroRad #neuroradiology #Neurology #Neurosurgery #radiology #stroke #neuroscience
2/🧵 Image
Read 11 tweets
Aug 26, 2022
🧠🩸Intracerebral Hemorrhage (ICH) Location Quiz

⚜️ Is it lobar or deep? That is the question...

👇🏿👇🏿👇🏿 (🧵/6)

#neurotwitter #MedEd #FOAMed #EndNeurophobia #tweetorial #FOAMrad #radres #NeuroTwitter #NeuroRad #Neurology #Neurosurgery #RadEd #stroke
ICH CASE 1⃣
🧠🩸Is ICH CASE 1⃣ lobar or deep?
Read 17 tweets
Aug 16, 2022
📌 Major changes in the Boston Criteria v.2.0 for Cerebral Amyloid Angiopathy diagnosis 👇

(🧵 1/4)

#neurotwitter #FOAMrad #radres #NeuroTwitter #NeuroRad #Neurology #Neurosurgery #RadEd #stroke #dementia #brain #Alzheimers
📌 Summary Panel on "Probable CAA"👇🏿

🩸🧠Most commonly used CAA diagnostic category

#FOAMrad #NeuroTwitter #NeuroRad #Neurology #Neurosurgery #RadEd #stroke #DementiaJoe
🧠🎯Key MRI markers of Cerebral Amyloid Angiopathy

- Easy to look for in clinical MRI scans
- Typical examples and MRI signal 👇

@gboulouis @marco_pasi85 @lsveikata @Cuneatos @svinsociety @MayoClinicNeuro @MayoRadiology

Read 5 tweets

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