Кистозное образование левого зрительного бугра. Хотелось бы узнать мнение коллег.

очень похоже на криблюр-киствидно расширенное периваскулярное пространство, в большинстве случаев являются случайной находкой , расширенные ПВП относятся к наиболее частым интракраниальным кистам неопухолевого происхождения, визуализируются пракстически у всех пациентов при использовании МРТ 3,0 Тл. Это, как правило, округлые или овальные образования с чектим вунтренним и внешним крнтуром , рсположенные по ходу перфорирующих артерий. ПВП идентичные по своим сигнальным характеристикам с ликвором в жлудочках мозга и САП. Отсутсвуют какие-либо признаки контрастного усиления , нет отложения кальция в стенках и пеифокального отека мозга. При больших размерах определяется масс-эффкт на окуржающие структуры . Та как самой часто локализацией является срелдний мозг., то может наблюдаться компрессия ликворных путей и водопровода. в

а нейроглиальная киста это тоже самое, о чем Вы говорите?

Вы, наверное, занкомы с этим текстом:

Cystic lesions are a common finding on MRI and CT brain imaging, representing a broad spectrum of
pathologies. Differentiation and diagnosis of these cysts can be difficult on the basis of imaging alone.
This case represents findings typical of a neuroglial cyst.
Neuroglial cysts are relatively uncommon, representing less than 1% of intracranial cysts. They can
occur anywhere in the neuraxis, however the frontal lobe is the most typical location. In addition,
intraparenchymal locations are more common than extraparenchymal.
These lesions are congenital, arising from sequestration of embyonic neural tube elements within the
developing white matter. As shown, they are typically benign appearing with smooth, rounded contours.
There is no surrounding signal intensity abnormality and they contain clear fluid resulting in
characteristics similar to that of CSF on imaging. These cysts are most commonly incidental findings, but
can present with symptoms such as headache, more commonly in adulthood than childhood.
The differential diagnosis for similar cystic abnormalities includes infectious cysts, cystic tumours,
arachnoid cysts, enlarged perivascular spaces (PVS), and porencephalic cysts.
Infectious cysts includes Neurocysticercosis and Hydatid cysts, both of which are parasitic infections.
Cysticercosis is the most common parasitic infection of the nervous system, and is caused by the larvae
of Taenia scolium (the pork tapeworm). Most neurocysticercosis cysts are found in the subarachnoid
space. Inflammation causes adhesion of adjacent gyral surfaces giving the impression the cyst is
intraparenchymal. The appearances on imaging depend on the stage of cyst evolution; early on the cyst
is thin walled often with a mural nodule which represents the larval scolex.
Hydatid disease is endemic to many parts of the world, can occur almost anywhere in the body, and is
caused by the larvae of Echinococcus granulosus. The cysts preferentially affect the liver, and cerebral
hydatid cysts are extremely rare. Intracranial Hydatid cysts commonly occur in the middle cerebral artery
territory, often within the parietal lobe. They are unilocular, thin walled, nonenhancing and large, growing
upto 10cm in size.
Cystic tumours includes astrocytomas and hemangioblastomas. Pilocytic astrocytoma is the most
common pediatric central nervous glial tumour. It has benign biological behaviour, thus, the survival rate
is extremely high. Hemangioblastomas account for 10% of posterior fossa tumours. Both these types of
tumours are typically thin walled with a mural nodule. These nodules enhance intensely following
administration of contrast.
Arachnoid cysts are typically extra-axial, often with scalloping of the adjacent calvarium. If symptomatic,
they tend to present in childhood. Enlarged PVSs are usually multiple and found in the basal ganglia
regions; some atypically large PVSs can appear very similar to neuroglial cysts and can only be truly
differentiated by pathology. Porencephalic cysts communicate with the lateral ventricles and show
surrounding gliosis.
Neuroglial cysts are a diagnosis of exclusion and no pathological confirmation is required. Treatment is
commonly to simply observe the lesion, however if symptomatic drainage or fenestration can be
performed.