PMC9805654_01
T1W post-contrast MRI coronal image showing encapsulated, peripherally enhancing lesion which is adherent to tent inferomedially.
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F1
The patient underwent an MRI scan that demonstrated a solid cum cystic lesion with only contrast enhancing cyst wall [Figures 1 and 2].
T1W post contrast MRI axial image showing the right parietotemporal encapsulated lesion.
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F2
The patient underwent an MRI scan that demonstrated a solid cum cystic lesion with only contrast enhancing cyst wall [Figures 1 and 2].
(a) Large and well encapsulated lesion in the right parietotemporal region which was adherent tentorium cerebelli and medially to midbrain. (b) Capsule of the lesion along with blood clot.
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F3
The intraoperative findings were large and well-encapsulated lesion in the right parietotemporal region which was adherent tentorium cerebelli and medially to midbrain [Figure 3a]; the opening pressure at ventriculostomy was not raised. A large abnormal thrombosed cortical vein was ending into the cystic part of the lesion, with the lumen filled with a clot [Figure 3b].
Section shows thick blood vessel lined by endothelial cells. Lumen of vessel shows organizing thrombus along with recanalization.
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F4
The vein was excised and final biopsy of the specimen was reported as a thick blood-filled vessel lined by endothelial cells and filled with organizing thrombus, showing recanalization [Figure 4].
Postoperative axial CT scan showing no residual lesion with dilated ventricles and the right-sided small subdural hematoma.
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F5
Repeat CT scan [Figure 5] showed no residual lesion, dilated ventricles, and right-sided small subdural hematoma.