File:Cerebellar metastasis - lung tumor (Radiopaedia 69317-79147 Axial T1 3).jpg

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Cerebellar_metastasis_-_lung_tumor_(Radiopaedia_69317-79147_Axial_T1_3).jpg ‎(512 × 512 pixels, file size: 63 KB, MIME type: image/jpeg)

Summary:

Description
  • Radiopaedia case ID: 69317
  • Image ID: 50103593
  • Image stack position: 3/31
  • Plane projection: Axial
  • Aux modality: T1
  • Study findings: A ventriculoperitoneal shunt was inserted and an MRI exam was performed 10 days later. The vermian lesion shows a low signal intensity on T1WI, intermediate to high signal intensity on T2WI and FLAIR with heterogeneous irregular enhancement mainly peripheral with central necrosis, and restricted diffusion on DWI/ADC. Peripheral vasogenic edema with mass effect on the 4th ventricle is noted. The multivoxel MR spectroscopy shows a dominant peak in Lipids / Lactate (LL), elevated choline and NAA peak at the solid component of a tumor. Depressed metabolites within vasogenic edema around the tumor (not shown). The tip of the VP shunt is seen in the right occipital horn. Diffuse thickening with extensive pachymeningeal enhancement most likely due to intracranial hypotension (over-shunting). Left frontal parenchymal cleft extending from the cortical surface to the lateral ventricle. There is localized area where both sides of the cleft are in contact with no CSF (cleft walls in apposition), lined by abnormal gray matter (polymicrogyria), representing probably closed-lipped variety of schizencephaly. An area of the right frontal cortex appears abnormally thick. The septum pellucidum is absent.
  • Modality: MRI
  • System: Central Nervous System
  • Findings: There is a midline lobulated enhancing mass in the posterior cerebral fossa of vermian location with surrounding edema, and mass effect on the 4th ventricle. Dilated 3rd, and lateral ventricles with mild periventricular interstitial edema, indicating obstructive hydrocephalus. A left schizencephaly is noted (incidental finding).
Date Published: 12th Jul 2019
Source https://radiopaedia.org/cases/cerebellar-metastasis-lung-tumour
Author Dr Ammar Haouimi
Permission
(Permission-reusing-text)		 http://creativecommons.org/licenses/by-nc-sa/3.0/

Licensing:

Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0)

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