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Choroid plexus tumours: Classification, MR imaging findings and pathological correlation
Author(s) -
Yan Chenggong,
Xu Yikai,
Feng Jie,
Sun Chongpeng,
Zhang Ge,
Shi Jie,
Hao Peng,
Wu Yuankui,
Lin Bingquan
Publication year - 2013
Publication title -
journal of medical imaging and radiation oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.31
H-Index - 43
eISSN - 1754-9485
pISSN - 1754-9477
DOI - 10.1111/1754-9485.12013
Subject(s) - medicine , choroid plexus , pathological , pathology , radiology , magnetic resonance imaging , central nervous system
Choroid plexus tumours ( CPT s) are extremely rare intraventricular neoplasms and are prone to bleeding during surgery. The purpose of this study was to summarise the MR imaging characteristics of 13 CPT cases. Methods Magnetic resonance images of 13 patients (six men and seven women; mean age 21.1 years) with pathologically proved CPT s were retrospectively reviewed. MR findings of the tumours were evaluated, with emphasis on their location, size, shape, internal architecture, margin and pattern and degree of enhancement. Differences in signal intensity characteristics were also investigated on MR images and analysed according to histological subtypes. Results Lesions were in the lateral ventricles ( n = 7), fourth ventricle ( n = 5) and cisterna magna ( n = 1), with a mean size of 5.0 cm (range 2.0–7.9 cm). The tumour parenchyma was a mixture of nodular or patchy areas of inhomogeneous isointense to slightly hyperintense signal on T 2‐weighted images. On postcontrast MR images, all lesions, except for one, had moderate to marked contrast enhancement. Multiple tortuous areas of ‘flow void’ signal extended through all the tumours except for two. A thin capsule could be seen in six cases. Conclusion Observation of large intraventricular tumours with inhomogeneity on T 2‐weighted images and flow void is suggestive of CPT s. Checking for signs of a thin capsule, extensive peritumoural oedema and necrosis may be useful when classifying CPT s.