PMC9834806_01
Head computed tomography images from a 58-year-old male patient with lower
limb weakness and a mass in the right frontoparietal lobe, right lateral
ventricle, showing the solid part of the tumour (red arrows), the cystic
part of the tumour (white arrows), and calcification (black arrows).
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A head computed tomography (CT) scan (Figure 1) revealed a mass in the right frontoparietal lobe, right lateral ventricle.
Magnetic resonance images from a 58-year-old male patient with lower limb
weakness and a mass in the right frontoparietal lobe, right lateral
ventricle, showing: (a) T1-weighted images; (b) T2-weighted images; (c)
fluid-attenuated inversion recovery images; (d) diffusion-weighted images;
and (e) enhanced T1-weighted images.
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The MRI showed an irregular tumour signal (Figure 2).
Results of magnetic resonance spectroscopy in a 58-year-old male patient with
lower limb weakness and a mass in the right frontoparietal lobe, right
lateral ventricle. The choline (Cho), N-acetyl-aspartate (NAA), and lactate
(Lac) peaks supported a diagnosis of glioma.
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During magnetic resonance spectroscopy (MRS) imaging, the N-acetyl-aspartate (NAA) peak was low, the choline (Cho) peak was elevated, and the NAA/Cho ratio was 2.0 (Figure 3).
Intraoperative tumour images from a 58-year-old male patient with lower limb
weakness and a mass in the right frontoparietal lobe, right lateral
ventricle, showing: (a) capsule contents (red arrows); and (b) the solid
tumour (white arrows).
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The solid part of the tumour was grey-white and tough, with unclear boundary that was poorly differentiated from the brain tissue and rich in blood supply (Figure 4), which were features typical of epidermoid cysts.
Postoperative pathology showing haematoxylin and eosin-stained tumour tissue
sections from a 58-year-old male patient with lower limb weakness and a mass
in the right frontoparietal lobe, right lateral ventricle, confirming
malignant squamous cell carcinoma.
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Postoperative pathology confirmed that the epidermoid cyst had transformed into malignant squamous cell carcinoma (Figure 5).