PMC7332703_01
Axial brain CT scans showing the hypodense mass with partially calcified rim and bone erosion of the adjacent left temporal bone. (a,b) Axial T2-weighted MR image showing hyperintense lesion at the left temporal bone. (c) Axial T1-weighted MR image showing hypointense circumferential mass and hyperintense fluid component in the mass. (d) Axial and coronal enhanced T1-weighted MR images showing heterogeneous contrast enhancement of the tumor. (e,f)
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F1
Brain magnetic resonance imaging (MRI) revealed a heterogeneously contrast-enhanced mass with significant displacement of the adjacent temporoparietal lobes [Figure 1].
Intraoperative photos after the left frontotemporal skin flap was raised, illustrating the yellowish gelatinous tumor and the involved temporal bone. (a) After removal of the outer table. (b) Removal of the tumor and the inner table. (c) The gross pathological specimen. (d)
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F2
The tumor was meticulously dissected from the dura and gross total resection of the tumor was achieved [Figure 2].
Postoperative brain CT scans showing removal of the tumor and reconstruction with titanium mesh plate. (a,b) Axial T2-weighted MR image showing decompression of the left temporal lobe. (c) T1 (d) and enhanced T1-weighted (e,f) MR images showing total removal of the tumor.
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F3
Postoperative imaging confirmed gross total tumor resection [Figure 3].
Macroscopic view showing a proliferation of bland spindle cells with myxoid stroma. (a) Microscopic view showing spindle cells having ovoid to elongated and atypical hyperchromic nuclei with prominent macrophages and no cartilage, osteoid, or bone. (b)
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F4
There were prominent macrophages and no cartilage, osteoid, or bone were identified [Figure 4].