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. 2024 Feb 28;34(3):511–521. doi: 10.1055/s-0044-1779587

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Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ )

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 8 — A pontine cavernous malformation (CM) in a 27-year-old female patient with headache and ataxia. (A) Axial T2-weighted magnetic resonance (MR) image shows a pontine CM with cystic components, showing hematocrit levels ( arrow ). (B) Axial and (C) sagittal T2-weighted MR images show a prominent progression of the lesion in the 6-month follow-up period after Gamma Knife surgery treatment, causing fourth ventricle compression ( arrows ). (D) Sagittal T2-weighted postoperative MR image shows partially resected CM ( arrow ) and postoperative porencephaly ( arrowhead ).