File:Acoustic schwannoma (Radiopaedia 39170-41389 Axial C+ 7).png

Summary:

• Radiopaedia case ID: 39170
• Image ID: 15402717
• Image stack position: 7/32
• Plane projection: Axial
• Aux modality: C+
• Study description: CT Brain
• Study findings: The iso-mildly hyperdense (pre-contrast), homogeneously enhancing right cerebellopontine angle mass, favored to be a meningioma, is unchanged in overall size, with perhaps slightly more convex margins. It demonstrates marginally increased surrounding vasogenic edema. There is persisting stable 4th ventricular effacement and mass-effect on the right cerebellar hemisphere and cerebral peduncle and stable leftward cerebellar midline shift. There is also mildly increased obstructive hydrocephalus involving the 3rd and lateral ventricles since the previous imaging. A small amount of high density is present within the dependent part of the 4th ventricle, not convincing for blood, similar to the previous CT. No intracranial hemorrhage or extra-axial collection. No evidence of acute infarction. No other new findings since the MRI.
• Modality: CT
• System: Oncology
• Findings: Right cerebellopontine angle mass is noted causing mass effect on the adjacent right cerebellum and slight distortion of the fourth ventricle but does not occlude it. No significant ventricular dilation. Remainder brain is unremarkable. Further investigation with MRI is recommended.
• Published: 24th Aug 2015
• Source: https://radiopaedia.org/cases/acoustic-schwannoma-21
• Author: Bruno Di Muzio
• Permission: http://creativecommons.org/licenses/by-nc-sa/3.0/

Licensing:

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