intraventrikuläre Neoplasien und Läsionen

Plexuspapillom
im vierten Ventrikel: Oben axial T2 , DWI, T1 nativ und FLAIR. Unten T2 sagittal und T1 KM sagittal, axial und coronar.
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Ependymom des
4.Ventrikels in der MRT. T2 axial.
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Ependymom des
4.Ventrikels in der MRT. FLAIR sagittal.
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Neurocytome
du ventricule latéral droit en coupe axiale
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Zufallsbefund
einer Kolloidzyste am Foramen Monroi. Links axiale native Computertomographie, rechts coronare ebenfalls native MRT. Der Befund wurde nicht histologisch gesichert, ist aber typisch.
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This image
is part of a series which can be scrolled interactively with the mousewheel or mouse dragging. This is done by using Template:Imagestack. The series is found in the category Medulloblastoma - MRI - case 001. Medulloblastom in der MRT
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This image
is part of a series which can be scrolled interactively with the mousewheel or mouse dragging. This is done by using Template:Imagestack. The series is found in the category Medulloblastoma - MRI - case 001. Medulloblastom in der MRT
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Tuberöse
Sklerose in der MRT: Hamartome (Tubera) subkortikal und subependymale Knötchen. T2 axial
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Tuberöse
Sklerose in der MRT: Subependymales Knötchen im Seitenventrikel in der Nähe des Foramen Monroi mit deutlicher Kontrastmittelaufnahme. Die Entwicklung eines Riesenzelltumors kann nur im Verlauf (Größenzunahme oder Änderung der Kontrastmittelaufnahme) vermutet werden.
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This 36
year-old male patient presented with a headache. This axial FLAIR (fluid-attenuated inversion recovery) MR image shows a right ventricular mixed solid/cystic mass limited by the septum pellucidum and ventricular walls. The solid portions of the tumour showed heterogeneous enhancement on post-gadolinium sequences. Based on these imaging characteristics a provisional diagnosis of central neurocytoma was made. The tumour was resected the next day - histology and immunocytochemistry confirmed the diagnosis.
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Choroid
plexus carcinoma: a rare cause of hydrocephalus. On contrast enhanced T1-weighted image, the choroid plexus carcinoma enhances vividly (arrows).
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Choroid
plexus carcinoma: a rare cause of hydrocephalus. On T2-weighted image, the lesion is slightly heterogenous and hyperintense compared to white matter. Adjacent white matter shows vasogenic oedema that is considered to occur due to invasion of choroid plexus carcinoma (arrows).
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Radiopaedia • CC-by-nc-sa 3.0 • de

Intraventricular neoplasms are rare and arise from periventricular structures such as the walls of the ventricular system, the septum pellucidum and the choroid plexus. Many tumor types arise from or can bulge into the ventricular system, although there are certain lesions that are relatively restricted to ventricles. A number of factors assist in defining the differential diagnosis, both radiological and clinical, including where the lesion is positioned within the ventricle as well as age and any associated conditions .

Neoplasms of the ventri­cular wall and septum pellucidum
Neoplasms of the choroid plexus

See: choroid plexus tumors.

Others
Non-neoplastic lesions 

See also

Siehe auch:
und weiter: