Abstract:

Objective: To investigate the phenotypes of choroids plexus papiloma in CT, MRI and comparatively analyze them with
pathologic manifestations so as to understand this disease. Methods: A retrospective analysis of CT and MRI phenotype was applied in
19 cases of choroids plexus papilloma, confirmed by surgery and pathology, among which 5 cases were checked with CT, 10 with MRI,
4 with CT and MRI. Image finding was compared with pathological result. Results: There were 13 cases of tumor in the fourth
ventricle, 5 in the lateral ventricle, 1 in cerebellum pontine angle；there were 18 cases of papillary tumor margins or ovulated, 13 cases
of tumor enhancement after internal mulberry-like or granular enhanced in MRI; And there were 6 cases of tumor lesions calcification,
2 of hemorrhage, 18 of hydrocephalus. There were 14 cases of tumor diagnosis choroids plexus papilloma（grade I）, 5 cases diagnosis
atypical choroids plexus papilloma（II level）in pathological diagnosis. Conclusion: A close link exists in imaging performance and
pathological features of choroids plexus papilloma, pathological features could help us understand imaging performance.

Key words: choroids plexus papilloma, tomography, X-ray computed, magnetic resonance imaging