File:Choroid plexus papilloma (Radiopaedia 38522-40629 Axial FLAIR 24).png

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Choroid_plexus_papilloma_(Radiopaedia_38522-40629_Axial_FLAIR_24).png ‎(512 × 512 pixels, file size: 144 KB, MIME type: image/png)

Summary:

Description
  • Radiopaedia case ID: 38522
  • Image ID: 14755670
  • Image stack position: 24/24
  • Plane projection: Axial
  • Aux modality: FLAIR
  • Study description: MRI Brain
  • Study findings: There is a 2.9 x 1.9 x 2.4 cm mass within the right inferior fourth ventricle extending through the right foramina of Luschka with distortion of the right medulla and partial effacement of the ventricle. It is predominantly solid with a few small cystic foci at its periphery. The solid component is hyperintense to brain parenchyma on T2 weighted sequence, isointense on T1, and enhances vividly. There are multiple vascular flow voids. No abnormal diffusion restriction within the lesion. Multiple foci of coarse calcification on recent non-contrast CT scan is noted. Inferiorly, the mass abuts the right PICA at its origin. T2 flow-void in the right vertebral artery is preserved. There is mass effect and partial effacement of the inferior aspect of the fourth ventricle. No upstream ventricular dilation or evidence of transependymal CSF shift.No other abnormal enhancement is demonstrated. Conclusion: Enhancing mass with peripheral cystic foci within fourth ventricle and extending through foramina of Luschka, without obstructive hydrocephalus. Hemangioblastoma would be the most common adult solid/cystic posterior fossa tumor with flow voids, but classically should not contain calcification. Medulloblastoma, choroid plexus papilloma and infratentorial ependymoma are possibilities although rare in adults.
  • Modality: MRI
  • System: Oncology
  • Findings: There is a 2.9 x 1.9 x 2.4 cm solid mass within the right inferior fourth ventricle extending through the right foramina of Luschka with distortion of the right medulla and partial effacement of the ventricle. Small foci of calcifications are present and the lesion enhances vividly. There is mass effect and partial effacement of the inferior aspect of the fourth ventricle. No upstream ventricular dilation or evidence of transependymal CSF shift. No other abnormal enhancement is demonstrated.
Date Published: 23rd Jul 2015
Source https://radiopaedia.org/cases/choroid-plexus-papilloma-7
Author RMH Neuropathology
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

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current00:21, 20 August 2021Thumbnail for version as of 00:21, 20 August 2021512 × 512 (144 KB)Fæ (talk | contribs)Radiopaedia project rID:38522 (batch #7937-76 C24)

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