case_images: PMC7298525_01
case_images: On CT scan, an occipital well-defined isodensity round mass had a thin enhanced peripheral rim, invaded skull bone, and superior sagittal sinus.
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case_images: PMC7298525_01_gr1.jpg
case_images: fig0005
case_images: The preoperative CT scan showed an occipital well-defined isodensity round mass, which had a thin peripheral rim enhancement, invaded skull bone and superior sagittal sinus (SSS) (Fig. 1).
case_images: On preoperative MRI, an extra-axial isointense mass on T1W enhanced peripherally and invaded superior sagittal sinus on gadolinium-enhanced T1W, was hyperintense on FLAIR and hypoperfused on DWI.
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case_images: PMC7298525_01_gr2.jpg
case_images: fig0010
case_images: T1W, which enhanced peripherally on gadolinium-enhanced T1W. This mass was hyperintense on FLAIR and restricted diffusion on diffusion-weighted imaging (DWI) (Fig. 2).
case_images: (A) the patient was in the prone position and U-shaped incision was used. (B) The pus (green arrow) was taken and sent for culture. (C) The skull bone was invaded (blue arrow). (D) Operative field after opening dura and tumor excision.
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case_images: PMC7298525_01_gr3.jpg
case_images: fig0015
case_images: After the elevation of the skin flap, we encountered the pus from the infected mass invading the skull bone and the subcutaneous layer (Fig. 3).
case_images: On macroscopic pathology, the tumor was a well-defined, lobulated, pearly mass.
case_images: gr4.jpg
case_images: PMC7298525_01_gr4.jpg
case_images: fig0020
case_images: The tumor was a well-defined, lobulated, pearly mass (Fig. 4).
case_images: At a one-month postoperative follow-up, CT scan shows no remnant mass.
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case_images: PMC7298525_01_gr5.jpg
case_images: fig0025
case_images: At a one-month postoperative follow-up, the CT scan showed no remnant mass (Fig. 5).