PMC8168652_01
Preoperative T2-weighted magnetic resonance imaging (MRI) performed at the age of 43 (a), 44 (b), and 45 years (c) shows an enlarging mass lesion in the right middle cranial fossa. (d) Preoperative postcontrast T1-weighted MRI. (e) Postoperative postcontrast T1-weighted MRI.
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F1
The meningioma enlarged over time [Figures 1a-c], alongside worsening symptoms [Video 1]. The postoperative magnetic resonance imaging (MRI) demonstrated complete resolution of the mass effect on the brain [Figures 1d and e].
N-isopropyl-p-[123I]-iodoamphetamine single-photon emission computed tomography (123I-IMP SPECT) performed before surgery (upper panels) demonstrates decreased regional cerebral blood flow to the right ventral midbrain, thalamus (arrows), and frontotemporal lobe cortex. SPECT performed 5 months after surgery (lower panels) reveals a slight improvement.
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F2
N-isopropyl-p-[123I]-iodoamphetamine single-photon emission computed tomography (123I-IMP SPECT) performed before the surgery demonstrated a decrease in the regional cerebral blood flow (CBF) of the right ventral midbrain, right thalamus, and frontotemporal lobe cortex. 123I-IMP SPECT performed 5 months after the surgery revealed a slight improvement in the regional CBF [Figure 2].