case_images: PMC9168291_01
case_images: Axial (a) T1- and (b) T2-weighted MRI scans demonstrating a contrast-enhancing oval tumor located in the right lateral ventricle trigone causing obstructive hydrocephalus.
case_images: SNI-13-227-g002.jpg
case_images: PMC9168291_01_SNI-13-227-g002.jpg
case_images: F2
case_images: At admission, her neurological examination was intact with no focal deficits and normal anal and urinary sphincter continence. A head, contrast-enhanced, and magnetic resonance imaging (MRI) investigation demonstrated a homogeneously contrast enhancing, 5 cm oval mass presumably originated from the choroid plexus in the trigone of the right lateral ventricle with signs of obstruction and dilation of the temporal horn and atrium of the contralateral ventricle [Figure 2].
case_images: Postoperative CT scan showing no signs of residual tumor and intraventricular hemorrhage.
case_images: SNI-13-227-g003.jpg
case_images: PMC9168291_01_SNI-13-227-g003.jpg
case_images: F3
case_images: The patient's amnesia gradually improved, and the headaches disappeared, and she was discharged after a control computed tomography (CT) [Figure 3] confirmed gross-total resection of the tumor with no signs of intraventricular hemorrhage.
case_images: Metastatic clear cell renal carcinoma. Proliferation of anaplastic epithelial cells with clear cytoplasm and hyperchromatic, irregular nuclei, displayed in sheets detached by fine conjunctive septa including capillaries. a: 100x magnification, b: 400x magnification
case_images: SNI-13-227-g004.jpg
case_images: PMC9168291_01_SNI-13-227-g004.jpg
case_images: F4
case_images: The final pathological examination revealed the peculiar pattern of gland tissue with nests of clear cells set within a sinusoidal vascular network [Figure 4], consistent with the diagnosis of clear cell renal carcinoma metastasis.