Is the bright mark inside the red circle on my brain MRI a mass?

Hello,

Welcome to icliniq.com.

I thoroughly read your query and understand your concern.

So to answer your specific query, the linear tissue seen within the fourth ventricle in your brain MRI (magnetic resonance imaging) (attachments removed to protect the patient's identity) is part of the cerebellar vermis, called uvula and nodule of vermis. It is non-enhancing. This is a normal finding. It is not a mass. A mass would usually cause a mass effect in and around the structures from where it arises. The fourth ventricular mass, in particular, would mostly distort the shape of the ventricle, cause ventricular enlargement, and lead to obstruction to the normal flow of CSF (cerebrospinal fluid), causing secondary hydrocephalous. A post-contrast enhancement would also be a finding in such masses. None of this is seen on this MRI.

Note: There are other sequences on MRI, such as diffusion, FLAIR (fluid-attenuated inversion recovery), etc., that help to characterize ventricular masses.

I hope this helps.

Take care.

Hello,

Welcome back to icliniq.com.

I understand your concern.

I have seen the red circle and the spot you are mentioning. It is part of the normal vermis, as I have already mentioned in my previous reply to you. Vermis is a normal part of our cerebellum.

I hope this has answered your query.

Kind regards.

Hello,

Welcome back to icliniq.com.

To answer your specific query - yes, a lesion that is seen in one section should be seen in the same region in other sections as well. In addition different sections give extra information about the extent of the mass lesion. For example anterior-posterior extent of the lesion from sagittal sections, superior-inferior extent from the coronal sections, and medial-lateral extent from the axial sections. I hope this helps you.

Thank you.

Hello,

Welcome back to icliniq.com.

My previous observation is based on all the images and sections provided by you.

Thank you.