PMC6925932_01
A head computed tomography (CT) scan showed a 90 x 90 mm mass in the right frontal lobe.
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August 2017 and visited a local doctor one month later. A head computed tomography (CT) scan showed a 90 x 90 mm mass in the right frontal lobe (Figure 1), and she was referred to our hospital.
(a) Head magnetic resonance imaging (MRI) revealed a mass presenting homogeneous hypointense signals on T1 images. (b) At the same site, hyperintense signals with a clear border on T2 images.
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Head MRI revealed a mass presenting homogeneous hypointense signals on T1 images (Figure 2(a)) and hyperintense signals with a clear border on T2 images (Figure 2(b)) at the same site.
Gadolinium- (Gd-) based contrast-enhanced MRI significantly enhanced the signals.
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Gadolinium- (Gd-) based contrast-enhanced MRI significantly enhanced the signals (Figure 3).
(a) Intraoperative findings showed that the tumor was hemorrhagic, dark red, and relatively soft and was partially accompanied by fibrous tissue. (b) After the MMA was treated, internal decompression was performed with Sonopet (Stryker Japan KK) to achieve total resection of the tumor, including removal of the infiltrated dura (Simpson grade I).
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Intraoperative findings showed that the tumor was hemorrhagic, dark red, and relatively soft and was partially accompanied by fibrous tissue (Figure 4(a)). After the MMA was treated, internal decompression was performed with Sonopet (Stryker Japan KK) to achieve total resection of the tumor, including removal of the infiltrated dura (Simpson grade I) (Figure 4(b)).
(a) Histopathological analysis showed that fibrous connective tissue containing numerous blood vessels was subfractioned into leaflet-like portions. (b) The areas inside the leaflets were stained with Alcian blue and contained a mucoid matrix.
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Histopathological analysis showed that fibrous connective tissue containing numerous blood vessels was subfractioned into leaflet-like portions (Figure 5(a)). The areas inside the leaflets were stained with Alcian blue and contained a mucoid matrix (Figure 5(b)).