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Imaging brain tumors - 5 - Non glial tumors 

LearnNeuroradiology
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Brain tumors are one of the most common diagnoses addressed in neuroradiology. This covers a wide spectrum of disease, from primary brain tumors like gliomas and glioblastomas to secondary disease like metastases. This lecture covers the spectrum of the most common brain tumors, with an emphasis on primary brain tumors.
This video discusses imaging of common non-glial brain tumors, such as lymphoma, metastasis, and meningioma. Lymphoma is a common brain tumor which can be either associated with systemic lymphoma or more commonly confined to the brain (primary central nervous system, CNS, lymphoma). It is associated with immunosuppression and HIV. Metastatic disease is also common, and it's important to remember that up to 50% of intracranial metastases are solitary. Meningiomas are the most common brain tumors overall and are extra-axial lesions. They come in 3 grades, and grade 2 and 3 are often irradiated after resection.
Additional videos in the playlist will address the imaging findings of other types of brain tumors and forming a differential diagnosis.
The level of this lecture is appropriate for radiology residents, radiology fellows, and trainees in other specialties who have an interest in neuroradiology or may see patients with brain tumors.
Check out this video and additional content on www.learnneuroradiology.com

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20 июл 2024

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Комментарии : 19   
@marklepka3093
@marklepka3093 4 года назад
Thank you for the video 👍👍 I Tust you so, I will see what happens to me
@immane75
@immane75 5 лет назад
Do you prefer mono or multivoxel? And why? We have a bran new 3 Tesla with Spectro on it ? Will be interesting to use but don t know how ???
@LearnNeuroradiology
@LearnNeuroradiology 5 лет назад
I recommend that you do 2D CSI and cover the region that is abnormal and some surrounding normal tissue. You may find this link helpful: mriquestions.com/single-v-multi-voxel.html
@immane75
@immane75 5 лет назад
Thank you.
@immane75
@immane75 5 лет назад
Do you perform spectro on evry scan for Tumor assessment ? Which one do you use long or short TE and why ?
@LearnNeuroradiology
@LearnNeuroradiology 5 лет назад
We do not routinely do spectroscopy, but only for troubleshooting. It can sometimes be useful to differentiate a low grade tumor from encephalitis or other diagnosis. For tumors, long echo spectroscopy is preferred because it minimizes the minor peaks and noise while retaining Choline and NAA. Short echo is better for peds and metabolic disorders
@divanshi4894
@divanshi4894 2 года назад
Hello! Quick question- if there is high cell turnover- and choline peaks are high in malignancy like lymphoma- how was the abnormal spectro the one with low choline? Please let me know :)) thank you!
@LearnNeuroradiology
@LearnNeuroradiology 2 года назад
I think you're talking about the spectra at 3:34. Ah, I think that is a mistake in the peak labeling (and my explanation). I think that elevated peak in spectrum A is actually choline. So, the spectrum is correct but my explanation and labels are wrong. Thanks for the super observant comment! I think I have fixed this in a later version of this lecture and I'll fix it in this one eventually.
@lamborghinidreamers8158
@lamborghinidreamers8158 2 года назад
Sir can Non Contrasted CT scan shows or finds the brain tumour.
@youtubestopmakingmechangem8035
@youtubestopmakingmechangem8035 4 года назад
This sounds horrible but this video has made me feel better. Waiting for an mri result. I got the images and got scared by something j saw but he isnt pointing to anything similar to what i was worried a out.
@LearnNeuroradiology
@LearnNeuroradiology 4 года назад
I'm sorry to hear that you're anxious about getting your MRI result. If you have questions about your images, in most places you can either talk to your doctor or ask to talk to one of the radiologists who reviewed your images. They can help you understand what you are looking at and are usually happy to help.
@tierraking4332
@tierraking4332 3 года назад
I had brain cancer now it's over and I have a scar on the back of my head
@LearnNeuroradiology
@LearnNeuroradiology 3 года назад
Sorry to hear. At least you were able to get this tumor resected. I wish you well!
@alifakhir1033
@alifakhir1033 2 года назад
CNS Lymphoma hypointens in T2? In the images it is not!
@LearnNeuroradiology
@LearnNeuroradiology 2 года назад
Hypointense is relative, I suppose. If you check out the T2 (right panel 1:17), the portions of the tumor which are enhancing are definitely darker than the surrounding edema, which is much more typical of lymphoma than other tumors such as glioblastoma or metastases. Yes, I get what you are saying though, it is still brighter than the surrounding white matter (and maybe similar to gray matter.
@alifakhir1033
@alifakhir1033 2 года назад
@@LearnNeuroradiology i got it, thanks a lot.
@kishorkumarb3192
@kishorkumarb3192 2 года назад
Sir, Can’t be this case is called as atypical meningioma, considering the significant vasogenic edema ?
@LearnNeuroradiology
@LearnNeuroradiology 2 года назад
meningioma, atypical meningioma, and anaplastic meningioma are pathology distinctions that are made ONLY on histology. You can't reliably differentiate them on imaging. Brain invasion on histology automatically makes it grade 2 or 3, along with some other features like number of mitoses. So, grade 1 meningiomas can have a lot of brain edema. If you think about it, this makes sense, because it can cause a lot of vascular congestion. If you see obvious brain invasion on post-contrast, you can suggest it is a higher grade meningioma. However, you still shouldn't use the phrase "atypical meningioma" because that is a pathology defined term.
@kishorkumarb3192
@kishorkumarb3192 2 года назад
@@LearnNeuroradiology thanks sir 🙏
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