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.




Zufallsbefund
einer Kolloidzyste am Foramen Monroi. Links axiale native Computertomographie, rechts coronare ebenfalls native MRT. Der Befund wurde nicht histologisch gesichert, ist aber typisch.

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

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

Tuberöse
Sklerose in der MRT: Hamartome (Tubera) subkortikal und subependymale Knötchen. T2 axial

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.

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.

Choroid
plexus carcinoma: a rare cause of hydrocephalus. On contrast enhanced T1-weighted image, the choroid plexus carcinoma enhances vividly (arrows).

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).
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
- intraventricular meningioma
- intraventricular metastasis
- oligodendroglioma
- pilocytic astrocytoma
- glioblastoma
- intraventricular CNS lymphoma
- medulloblastoma
- primitive neuroectodermal tumor
- sarcoma
- intraventricular teratoma
- chordoid glioma of the third ventricle
- rosette-forming glioneuronal tumors
Non-neoplastic lesions
See also
Siehe auch:
- Hirnmetastase
- Ependymom
- central neurocytoma
- pilocytic astrocytoma
- Tuberöse Sklerose
- tuberculoma
- subependymal giant cell astrocytoma
- Aunt Minnie
- subependymoma
- colloid cyst
- Kraniopharyngeom
- Glioblastoma multiforme
- Plexuspapillom
- Tumoren der Pinealisregion
- Oligodendrogliom
- Medulloblastom
- intraventricular simple cysts
- choroid plexus metastases
- syndrome of the trigone
- Kolloidzyste des dritten Ventrikels
- Cavum septi pellucidi
- intraventrikuläre Kolloidzyste
- Hämangioblastom
- Neurozystizerkose
- primäres ZNS-Lymphom
- Karzinom des Plexus choroideus
- intraventrikuläres Meningeom
- atypical teratoid / rhabdoid tumour
- Cavum septi pellucidi et vergae
- cavum velum interpositum
- Xanthogranulome des Plexus choroideus
- sPNET
- intraventricular haemorrhage (IVH)
- primitive neuroectodermal tumour
- Tumoren des Plexus choroideus
- intraventrikuläre Neoplasien und Läsionen - Überblick
und weiter:
