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. 2024 Mar 25;7(13):CASE2432. doi: 10.3171/CASE2432

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FIG. 4 — Case 4. Preoperative axial noncontrast CT (A) and axial (B) and coronal (C) contrast-enhanced T1-weighted MRI showing a large enhancing lesion along the splenium of the corpus callosum and pineal region. Postoperative axial noncontrast CT (D) and axial (E) and coronal (F) contrast-enhanced T1-weighted MRI following a stage 1 supracerebellar infratentorial approach for partial resection of the lesion. Axial noncontrast CT (G) and axial (H) and coronal (I) contrast-enhanced T1-weighted MRI following a stage 2 interhemispheric occipital approach for STR of the lesion 2.5 months after stage 1. Axial noncontrast CT (J) and axial (K) and coronal (L) contrast-enhanced T1-weighted MRI showing recurrence of the hemangiopericytoma along the pineal region. Axial noncontrast CT (M) and axial (N) and coronal (O) contrast-enhanced T1-weighted MRI following a posterior occipital interhemispheric approach for STR of the lesion. Axial (P) and coronal (Q) contrast-enhanced T1-weighted MRI 8 months after the third surgery.