Choroid plexus papilloma: a clinicopathological study of 23 cases.
BACKGROUND
Choroid plexus papillomas (CPPs) are rare, accounting for less than 1% of all intracranial tumors in adults. However, they are relatively more common in childhood and constitute 1.5 to 4% of intracranial tumors.


METHODS
They are most often located in the lateral ventricle, followed by the fourth and third ventricles and, rarely, in the cerebellopontine angle. 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 described in the literature. Neuromelanin production is also extremely rare and only 2 cases have been reported to date.


CONCLUSIONS
In the present communication, 23 cases of CPP are analyzed and rare clinical, pathological, and radiological features are described.
Sarkar
C
C
Department of Pathology, All India Institute of Medical Sciences, New Delhi.
Sharma
M C
MC
Gaikwad
S
S
Sharma
C
C
Singh
V P
VP
D000293:Adolescent; D000328:Adult; D002114:Calcinosis; D002648:Child; D002675:Child, Preschool; D016545:Choroid Plexus Neoplasms / Q000737:chemistry / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005260:Female; D005910:Glioma / Q000737:chemistry / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006801:Humans; D007223:Infant; D008297:Male; D008543:Melanins / Q000032:analysis; D008875:Middle Aged; D009999:Ossification, Heterotopic; D014057:Tomography, X-Ray Computed
D008543:Melanins