case_images: PMC6744829_01
case_images: Image of the primary tumor, an intraventricular atypical choroid plexus papilloma. T1-weighted sagittal image with contrast shows a homogeneously enhancing lesion in the inferior fourth ventricle (arrow).
case_images: SNI-10-65-g001.jpg
case_images: PMC6744829_01_SNI-10-65-g001.jpg
case_images: F1
case_images: However, a cranial magnetic resonance imaging (MRI) showed a tumor mass within the fourth ventricle (3 cm x 2 cm of size [Figures 1 and 2]); the differential diagnosis included an ependymoma, a plexus papilloma, and an intraventricular meningioma.
case_images: Image of the primary tumor, an intraventricular atypical choroid plexus papilloma. T1-weighted axial image with contrast shows a homogeneously enhancing lesion in the fourth ventricle with contact to and impression on the left middle cerebellar peduncle (arrow).
case_images: SNI-10-65-g002.jpg
case_images: PMC6744829_01_SNI-10-65-g002.jpg
case_images: F2
case_images: However, a cranial magnetic resonance imaging (MRI) showed a tumor mass within the fourth ventricle (3 cm x 2 cm of size [Figures 1 and 2]); the differential diagnosis included an ependymoma, a plexus papilloma, and an intraventricular meningioma.
case_images: Image of the recurrent atypical choroid plexus papilloma in the middle cerebellar peduncle. T1-weighted axial image with contrast shows an enhancing intraparenchymal lesion with surrounding edema (arrow).
case_images: SNI-10-65-g003.jpg
case_images: PMC6744829_01_SNI-10-65-g003.jpg
case_images: F3
case_images: In September 2017, a cranial MRI showed a localized, inhomogeneous contrast-enhancing tumor mass in the middle left cerebellar peduncle (circa 17 mm x 17 mm) [Figure 3].