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  • syndromes
  • The familial tumor syndromes (and respective chromosomal abnormalities that are associated with CNS neoplasms) include neurofibromatosis type I (17q11), neurofibromatosis type II (22q12), von Hippel-Lindau disease (3p25-26), tuberous sclerosis (9q34, 16p13), Li-Fraumeni syndrome (17p13), Turcot syndrome type 1 (3p21, 7p22), Turcot syndrome type 2 (5q21), and nevoid basal cell carcinoma syndrome (9q22.3). (uchile.cl)
  • Other clinical presentations of brain tumors include focal cerebral syndromes such as seizures. (uchile.cl)
  • focal
  • To date, NCM has been classified as a phacomatosis caused by congenital dysplasia of the neuroectodermal melanocyte precursors resulting in excessive (focal or diffuse) proliferation of melanin-producing cells in the skin and leptomeninges (3, 13). (upmc.edu)
  • spinal
  • Note: Information on brain tumors in children is available in the PDQ summary on Childhood Brain and Spinal Cord Tumors Treatment. (uchile.cl)
  • Sagittal T1-weighted MR image shows the spinal cord tumor at the level of the conus medullaris, which has a slight and homogeneous signal hyperintensity relative to that of the cord. (ajnr.org)
  • No clear limits of the tumor could be found in the spinal cord or on the nerve roots. (ajnr.org)
  • Axial T1-weighted images demonstrate the intramedullary position of the tumor, which occupies nearly the entire spinal canal. (ajnr.org)
  • patterns
  • In contrast, the tumor bulk in the presented case consisted of a typical schwannoma containing both Antoni A and Antoni B patterns. (upmc.edu)
  • frequency
  • Excluding hemangiomas and lymphangiomas, they are the leading group of tumors in infants overall and are second in frequency to teratoma in the newborn . (springer.com)
  • clinical
  • The clinical presentation of various brain tumors is best appreciated by considering the relationship of signs and symptoms to anatomy. (uchile.cl)
  • Genes
  • Using single stranded conformational polymorphism (SSCP), denaturing gradient gel electrophoresis and direct sequencing, the presence of somatic mutations in these genes could not be demonstrated in any tumor. (thedoctorsdoctor.com)
  • molecular
  • The paucity of published data on the molecular basis of these tumors prompted us to examine 22 adamantinomatous craniopharyngiomas looking for genetic abnormalities. (thedoctorsdoctor.com)
  • treatment
  • Treatment varies based on the severity of the condition, the location of the tumor and the overall health of the affected person. (malacards.org)
  • Treatment options for different types of tumors. (uchile.cl)
  • Treatment options for various tumor types and their subsets. (uchile.cl)
  • cells
  • Bednar tumor is also known as pigmented DFSP because it contains dark-colored cells that give may give the tumor a multi-colored (i.e red and brown) appearance. (malacards.org)
  • It is generally accepted that in embryogenesis, the Schwann cells are derived from the neural crest and are of neuroectodermal origin. (medscape.com)
  • The pigmented cells within the small fragments of tumor were attached to the schwannoma rather than part of it (Figures 7 and 8). (upmc.edu)
  • The tumor was composed of large epitheloid or spindle cells that frequently had intranuclear vacuoles ( Fig 6 ). (ajnr.org)
  • appearance
  • The pigmented tumors may have varied appearance on MR image because of their different degrees of melanin or hemorrhagic foci. (ajnr.org)
  • terms
  • It allows treated by Terms given to basic tumors and full products, effective Mantle-cell, third Library and terms, accessible characters, assistance and Waldeyer's theory, computer and bolus, and more. (baylieforbrains.com)