Extraventricular and Intra-Cerebellar Papilloma of the Choroid Plexus

Greene, Ralph C.

doi:10.1097/00005072-195104000-00007

Cited by 39 publications

(21 citation statements)

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“…2,3,6,7,15,20) Choroid plexus papilloma developing between the cerebellar hemispheres is presumed to have developed from the medial segment of the fourth ventricle or the peduncular part of the lateral segment and then extended in the direction of the cisterna magna. 7) Choroid plexus papilloma may also develop at a primary intraparenchymal location completely unrelated to the ventricular system, such as the intrinsic brainstem region, 18) cerebellar parenchyma, 9,19) frontotemporal cortex, 1) and spinal intramedullary region, 4) as well as the suprasellar region on the surface of the brain but not intraparenchymally, 11) and in the sacral canal. 12) These papillomas arise from ectopic development or metaplasia of an ependymal rest.…”

Section: Discussionmentioning

confidence: 99%

Choroid Plexus Papilloma Originating in the Sella Turcica -Case Report-

Sameshima

Tanikawa

Sugimura

et al. 2010

Neurol. Med. Chir.(Tokyo)

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A 51-year-old female presented with a rare case of choroid plexus papilloma originating in the sella turcica manifesting as headaches that was not readily distinguishable preoperatively from pituitary adenoma. Head magnetic resonance imaging revealed a tumor extending from the sella turcica to the suprasellar cistern. The tumor was removed via an endonasal transsphenoidal approach. Histological examination indicated a papillary structure covered with a layer of columnar epithelial cells that resembled normal choroid plexus. These findings, together with immunohistochemistry, led to a diagnosis of choroid plexus papilloma.

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Section: Discussionmentioning

confidence: 99%

Choroid Plexus Papilloma Originating in the Sella Turcica -Case Report-

Sameshima

Tanikawa

Sugimura

et al. 2010

Neurol. Med. Chir.(Tokyo)

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“…Approximately 10% of the papillary tumors of the choroid plexus reported were malignant. At times, these tu mors have been noted to recur in situ after apparently total removal, to extend into contiguous ventricular chambers or cisterns [19], to be bilat eral [25], to seed along the cerebral spinal fluid pathways [26], and to ex pand within either the cerebral or cerebellar hemispheres [16].…”

Section: Introductionmentioning

confidence: 99%

Diagnosis and Surgical Treatment of Choroid Plexus Papillomas

Raimondi¹,

Gutiérrez²

1975

Pediatr Neurosurg

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This is a report of 22 cases of papillomas of the choroid plexus diagnosed and managed personally by the author. The angiographic diagnosis and extension of choroid plexus papillomas are described, as is the surgical technique for removing these tumors from the lateral, third, and fourth ventricles. Specific attention is given to using the angiogram as the study of choice upon which surgical technique is planned. The diagnosis of choroid plexus papilloma of the lateral ventricle is made by observing the presence of a hypertrophied anterior choroidal artery, a ‘double tumor’ sign with one tumor at the trigone and the other within the temporal or frontal horn, tumor stain at the trigone, and asymmetrical hydrocephalus, generally, with a shift away from the side of the larger ventricle. Posterior fossa papillomas cause symmetrical hydrocephalus and generally have tumor stain located within the mid-line, with the major feeding coming from either the superior cerebellar or the posteroinferior cerebellar arteries. Surgical removal of the tumor should entail an ‘en bloc’ resection following occlusion of the feeding and draining vessels. The tumor should be removed directly when it is in the lateral ventricle and following ventriculocerebral spinal fluid shunting when it is in the posterior fossa.

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“…A single case of extraventricular CPP in the suprasellar region has also been reported (26). In addition, 3 cases of infratentorial, extraventricular CPP and 2 cases of supratentorial, extraventricular choroid plexus cysts have also been described (4,18,20,23,24,39). A single case of CPP has also been described in the pineal region (34).…”

Section: Discussionmentioning

confidence: 97%