PMC9984268_01
Preoperative photograph showing massive right frontoparietal scalp mass.
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A 72-year-old man who was admitted to our unit presented with a 7-year history of a scalp mass in right frontoparietal region ( Fig. 1 ).
Sagittal contrast magnetic resonance imaging (MRI) showing a T2 hyperintense extra-axial mass in the right frontoparietal convexity, with a dural tail and invasion through the skull bone into the scalp.
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Mild subfalcine herniation to the left side was observed ( Figs. 2 & 3 ).
The tumor at the dura mater was also composed of similar spindled cells. (
A
) Low magnification, 20X. (
B
) High magnification, 200X. (
C
) A small focus of necrosis was observed, 100X. The bone marrow spaces were infiltrated by tumor cells. (
D
) Low magnification, 20X. The bone marrow space infiltration by tumor cells. (
E
) High magnification, 200X. (
F
) Tumor cells infiltrating the subcutaneous connective tissue, 40X.
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The dura displayed multiple nodular growths ( Fig. 4 ).
The tumor was composed of syncytial sheets of spindled cells with whorl formation. (
A
) Low magnification, 40X, of the tumor. (
B
) High magnification, 200X, of the tumor. (
C
) A focus of necrosis was observed, 100X.
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Apart from a focal area of necrosis, no other atypical features were observed ( Fig. 5 ).