Choroid plexus papilloma: A clinicopathological study of 23 cases

BACKGROUND Choroid plexus papillomas (CPPs) are rare, accounting for less t han 1% of all intracranial tumors in adults. However, they are relatively m ore common in childhood and constitute 1.5 to 4% of intracranial tumors. DESCRIPTION They are most often located in the lateral ventricle, followed by the fourth and third ventricles and, rarely, in the cerebellopontine ang le. The radiological appearance of a CPP as a cyst with a mural nodule is a curiosity. Bone formation is rare in CPPs and only 6 cases have been descr ibed in the literature [1]. Neuromelanin production is also extremely rare and only 2 cases have been reported to date [2,3]. CONCLUSION In the present communication, 23 cases of CPP are analyzed and r are clinical, pathological, and radiological features are described. (C) 19 99 by Elsevier Science Inc.