Solitary fibrous tumour/haemangiopericytoma of the spinal cord.

Solitary fibrous tumours/haemangiopericytomas (SFT/HPC) are fibroblastic mesenchymal neoplasms that harbour a genetic fusion of NAB2/STAT6. There are few reported cases in the central nervous system (CNS), of which spinal tumours are minority. We present a case of a 63-year-old woman with progressive paraparesis and a sensory level of T6.

[High-grade glioma after stereotactic radiosurgery for vestibular schwannoma].

Stereotactic radiosurgery undoubtedly represents an important therapeutic procedure for various intracranial pathologies, especially tumours, although they are not entirely complication-free. Radiosurgery have been considered a good management strategy for the majority of small-to-medium size vestibular schwannomas. The authors describe a case of high-grade glioma associated with a previous radiosurgery treatment for a vestibular schwannoma in a 69 year-old woman.

Ultrastructural pathology of anaplastic and grade II ependymomas reveals distinctive ciliary structures--electron microscopy redux.

Ependymoma tumors likely derive from the ependymal cells lining the CNS ventricular system. In grade II ependymomas, tumor cells resemble typical ependymocytes, while anaplastic ependymomas are poorly differentiated. We studied three grade II and one anaplastic ependymoma, focusing on the ciliary structures.

[Cervical lymphatic metastasis of an intracranial meningioma].

Introduction: Meningioma is the most common primary intracranial tumor, accounting for around a third of all primary brain tumor. In most cases, they are benign neoplasms that start in the cells of the arachnoid mater. Meningiomas are typically slow growing; however they can metastasize in 0.

[Paediatric neurocysticercosis: two case reports].

Introduction: Neurocysticercosis, caused by the larvae of Taenia solium, is the most common parasitic infection of the central nervous system in humans. Considered an endemic parasitosis in developing countries including Latin America, Asia and Africa while in Europa, the cases of neurocysticercosis are anecdotal.

Case Reports: We report two cases of neurocysticercosis in children of non-Spanish origin who presented with seizures, with the initial diagnosis of brain tumors both were treated with surgery; later, to be the diagnosis of neurocisticercosis antiparasitic therapy was administered.

[Primary cranial vault lymphoma].

Introduction: Primary bone lymphomas account for 3-7% of all malignant bone tumours and less than 2% of lymphomas in adults. Having the cranial vault as their primary location is very infrequent.

Case Report: A 59-year-old female who presented a painful tumour on the cranial vault which, following radical surgical removal, was found to be an ALK-negative primary large-cell lymphoma.

Telomerase expression and proliferative activity suggest a stem cell role for thyroid solid cell nests.

Solid cell nests of the human thyroid gland are composed of main cells and C cells. In order to investigate the putative stem cell nature of the role for solid cell nests, we evaluated the histological features, and the immunohistochemical expression of p63, bcl-2, telomerase catalytic subunit, and two proliferative markers (Ki-67 and minichromosome maintenance protein 2), in a series of 24 cases of solid cell nests. Proliferative indices were determined in (a) solid cell nests, (b) thyroid follicular cells in the vicinity of solid cell nests within a low-power field, and (c) distant thyroid tissue, at a distance of at least three low-power fields from solid cell nests.

Mesenchymal hamartoma of the liver; Clinicopathological, immunohistochemical and flow cytometric study of two cases.

Mesenchymal hamartoma (MH) is a rare liver lesion of infancy. Due to its rapid increase in size, it is often misdiagnosed clinically as a malignant tumour or as a hepatic cyst because of its cystic appearance. We present the clinicopathological, immunohistochemical and flow cytometric features of two cases, involving an 11-month-old boy and a 13-month-old girl.

Spinal extradural angiolipoma, with a literature review.

Introduction: Angiolipoma is a benign tumour composed of mature adipocytes admixed with abnormal vascular elements. It reportedly accounts for 0.1-0.