One to three percent of childhood brain tumors are choroid plexus tumors. Of these, 30-40% are considered to be choroid plexus carcinoma. We report one case of choroid plexus carcinoma without parenchymal invasion, which showed rapid dissemination along whole CSF pathway and developed postoperative hydrocephalus in spite of gross total resection.
Brain Neoplasms ; Choroid Plexus Neoplasms ; Choroid Plexus* ; Choroid* ; Hydrocephalus

Papillomas of the choroid plexus constitute 3.4~3.9 percent of intracranial tumors in childhood, much higher incidence rate than that in adulthood. Although relatively rare, this is an important tumor since it is usually a benign resectable lesion with satisfactory result. It is also an unusually interesting tumor because of its association with a communicating hydrocephalus. Its site of occurrence is also characteristic according to the age, being usually lateral ventricle and rarely the 4th or 3rd ventricle in childhood. We present a case of 4th ventricle choroid plexus papilloma in a child with its characteristic CT finding.
Child* ; Choroid Plexus* ; Choroid* ; Humans ; Hydrocephalus ; Incidence ; Lateral Ventricles ; Papilloma ; Papilloma, Choroid Plexus*

The choroid plexus papillomas are uncommon neoplasms of the central nervous system, and constitute 0.5~0.6 percent of intracranial tumors. These tumor are surgically treatable and the encouraging results of surgical removal justify an aggeressive surgical approach. We present a case of lateral ventricle choroid plexus papilloma in a child with communicating hydrocephalus.
Central Nervous System ; Child* ; Choroid Plexus* ; Choroid* ; Humans ; Hydrocephalus ; Lateral Ventricles* ; Papilloma, Choroid Plexus*

A case of primary choroid plexus papilloma of the cerebellopontine angle with spinal leptomengeal seeding is reported, and the literature pertinent to this subject reviewed. CT scan revealed a well-demarcated elliptical homogeneousely high density lesion with definite contrast enhancement within right cerebellopontine angle, which could hardly be differentiated from that of acoustic neurinoma.
Cerebellopontine Angle* ; Choroid Plexus* ; Choroid* ; Neuroma, Acoustic ; Papilloma, Choroid Plexus* ; Tomography, X-Ray Computed

The choroids plexus papillomas are rare neoplasms of central nervous system, constituting about 0.5% of intracranial tumors. They are most common in children, especially in the first two year of life. In adult, they usually occur within posterior fossa, but cerebellopontine(CP) angle choroids plexus tumor is extremely rare. The authors report two cases of 4th ventricle and CP angle choroids plexus papilloma in adult.
Adult* ; Central Nervous System ; Cerebellopontine Angle* ; Child ; Choroid Plexus* ; Choroid* ; Humans ; Papilloma ; Papilloma, Choroid Plexus*

BACKGROUND: The pigmented or melanotic variant of choroid plexus carcinoma is very rarely encountered. CASE REPORT: We report herein a case of melanotic or pigmented choroid plexus carcinoma in the posterior fossa of an 11-year-old female. CONCLUSIONS: A histopathological study supported by immunohistochemistry helped the authors to diagnose this rare entity. How to differentiate this tumor from pigmented papillary medulloblastoma, cerebellar papillary ependymoma, and metastatic malignant melanoma is discussed.
Carcinoma ; Child ; Choroid ; Choroid Plexus ; Choroid Plexus Neoplasms ; Ependymoma ; Humans ; Immunohistochemistry ; Medulloblastoma ; Melanins ; Melanoma

The case of a 6-month-old male infant with a choroid plexus papilloma showing unusual features is presented. This case is very unusual because the tumor did not have any connection with the choroid plexus but was attached to the normal brain parenchyme, encapsulated with thick hyalinized membrane and surrounded with large multi-septated cyst. At the surgery, it was confirmed that the tumor was in fact located at the right temporal lobe without having any connection to the normal choroid plexus and surrounding cyst was not lateral ventricle. Histopathological examination revealed a choroid plexus papilloma. We present this unusual case of choroid plexus papilloma with review of literature. Also, the pathogenesis of the tumor capsule and surrounding cyst is discussed.
Brain ; Choroid Plexus* ; Choroid* ; Humans ; Hyalin ; Infant ; Lateral Ventricles ; Male ; Membranes ; Papilloma, Choroid Plexus* ; Temporal Lobe

Choroid plexus papillomas are uncommon neoplasms of the central nervous system, accounting for 0.4% to 0.1% of all intracranial tumors. We present a choroid plexus papilloma in the trigone of the lateral ventricle in an 8 months old infant with hydrocephalus. We successfully controlled hydrocephalus and subdural fluid collection after total removal of the mass.
Central Nervous System ; Choroid Plexus* ; Choroid* ; Humans ; Hydrocephalus ; Infant* ; Lateral Ventricles* ; Papilloma, Choroid Plexus* ; Subdural Effusion

PURPOSE: The purpose of this study was to evaluate the sonographic features of normal choroid plexus, thushelping avoid misinterpretations such as intraventricular hemorrhage or abnormality. MATERIALS AND METHODS: Posterior coronal, parasagittal, and oblique sagittal scans of 400 choroid plexus in normal full-term neonates(100girls, 100 boys) were reviewed with special attention to coronal configuration, glomus patterns,and the shape ofanterior ends. Sonographic features were classified as follows ; tubular(type 1), posterior clubbing(type 2),mid-bulging(type 3), or double choroidal pattern(type 4), as seen on posterior coronal scans; crescent(type1),superior notching(type 2), dorsal bulging(type 3), or inferior notching(type 4), as seen on parasagittal scans;and anterior tapering(type 1) and clubbing shape (type 2) on oblique parasagittal scans. Maximal diameters of thechoroid plexus on posterior coronal scan and the glomus on parasagittal scan were measured. All sonographicmeasurements of normal choroid plexus were statistically analysed according to gender and side. RESULTS: Fourhundred normal choroid plexus were classified as 293 cases(73%) of tubular pattern(type 1), 50 cases(13%) ofposterior bulging(type 2), 44 cases (11%) of mid-bulging(type 3) and 13 cases(3%) of double choroidal pattern(type 4) as seen on posterior coronal scans ; 263 cases(66%) of crescent shape(type 1), 70 cases(17%) of superiornotching (type 2), 38 cases(9%) of dorsal bulging(type 3), and 29 cases(7%) of inferior notching(type 4), as seenon parasagittal scans; and 233 cases(58%) of anterior tapering(type 1) and 167 cases(42%) of anterior clubbing(type 2), as seen on oblique parasagittal scans. Maximal diameters of the choroid plexus on posterior coronal scanwere 7.17 +/-0.12 mm (95% confidence interval [CI]) on the right side and 7.13 +/-0.19mm (95% CI) on the left side,and 8.13 +/-0.24(95% CI) mm on the right and 8.57 +/-0.29mm on the left side glomus on parasagittal scan. There wereno significant statistical differences with regard to gender and side. CONCLUSION: We have observed themorphological variety of the choroid plexus in normal full-term neonates on ultrasonograms and believe that aknowledge of the various sonographic patterns involved can help differentiating normal choroid plexus fromintraventricular hemorrhage or choroidal abnormality.
Brain ; Choroid Plexus* ; Choroid* ; Hemorrhage ; Humans ; Infant, Newborn* ; Ultrasonography

The authors report a case of symptomatic choroid plexus cyst, located in the trigone of the left lateral ventricle in a 18-year-old man who presented with headache and seizure attack. The cyst was diagnosed by magnetic resonance image(MRI), and was confirmed with surgery. The cyst had no communication with the ventricular system orsubarachnoid space. Total removal of cyst adhering to the choroid plexus was accomplished, with subsequent disappearance of the seizure and headache. A brief review of the literature is included.
Adolescent ; Choroid Plexus* ; Choroid* ; Headache ; Humans ; Lateral Ventricles* ; Seizures