Choroid plexus papillomas are rare tumors, representing less than 1% of all intracranial neoplasms in our review of the English literature. Derived from the neuroepithelial cells of the choroid plexus, these tumors recapitulate the structure of the normal choroid plexus, often demonstrating a well-developed papillary architecture. This tumor most commonly affects children and typically arises i...

The choroid plexus and the third ventricle wall of the rat brain were observed by scanning electron microscopy. Macrophages of various shapes known as Kolmer cells were attached to the ependymal surface of the choroid plexus densely covered with microvilli. Some cells possessed numerous fine processes radiating from the centrally located cell body and ending, often with an attenuated web-like t...

OBJECTIVE Choroid plexus carcinomas are rare and occur more frequently in children than in adults. The differential diagnosis includes choroid plexus papilloma and papillary ependymoma. The prognosis is generally poor. The objective of this paper is to discuss the epidemiological characteristics, diagnosis, treatment, and prognosis of this rare childhood tumor. CASE REPORT A three-year-old ch...

Epiplexus cells are a population of innate immune cells in the choroid plexus of the brain ventricles. They are thought to contribute to the immune component of the blood-cerebrospinal-fluid-barrier (BCSFB). Here we have developed a novel technique for studying epiplexus cells in acutely isolated, live and intact choroid plexus. We show that epiplexus cells are potently activated by exogenous A...

Choroid plexus tumors are rare intraventricular papillary neoplasms derived from choroid plexus epithelium, which account for approximately 2% to 4% of intracranial tumors in children and 0.5% in adults. Almost all choroid plexus carcinomas are seen in children and are extremely rare in adults. Headache, diplopia, and ataxia are the most common symptoms usually caused by mechanical obstruction ...

Neural progenitors in the developing neocortex, neuroepithelial cells and radial glial cells, have a bipolar shape with a basal process contacting the basal membrane of the meninge and an apical plasma membrane facing the lateral ventricle, which the cerebrospinal fluid is filled with. Recent studies revealed that the meninges and the cerebrospinal fluid have certain roles to regulate brain dev...

Choroid plexus cysts (CPC) are usually found at the end of the second trimester of pregnancy. Sometimes they can be accidentally and found on prenatal ultrasound examinations. Vast majority of CPC resolve spontaneously by 28th weeks gestation. In the older aged group the choroid plexus cysts are extremely rare pathomorphologic medical entity. Since they are almost always asymptomatic, they are ...

Histologically, Alzheimer's disease (AD) is characterized by senile plaques and cerebrovascular amyloid deposits. In previous studies we demonstrated that in AD patients, amyloid-beta (A beta) peptide also accumulates in choroid plexus, and that this process is associated with mitochondrial dysfunction and epithelial cell death. However, the molecular mechanisms underlying A beta accumulation a...

Cerebrospinal fluid (CSF) within the cerebral ventricular system is secreted by a neuroepithelial tissue which is called as the choroid plexus. Tumors arising from these tissues are rare. Choroid plexus papillomas (CPPs) have been denoted as WHO grade I of the choroid plexus tumors. Among the intracranial tumors, neoplasms of the choroid plexus constitute around 0.36-0.6%. CPPs are mostly slow ...

s Background Intracranial calcifications are veritable radiological pointer to pathologies. Therefore there is need to differentiate physiological and pathological calcifications. Objective Todetemine the incidence of physiological intracranial calcifications and relationship to age and sex. Materials And Methods A cross sectional descriptive study of the computed tomograms (CT) of the brain wa...