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  2. Hemangiopericytoma - Wikipedia

    en.wikipedia.org/wiki/Hemangiopericytoma

    Hemangiopericytoma is an aggressive mesenchymally derived tumor with oval nuclei with scant cytoplasm. There is dense intercellular reticulin staining. Tumor cells can be fibroblastic, myxoid, or pericytic. These tumors, in contrast to meningiomas, do not stain with epithelial membrane antigen.

  3. Meningioma - Wikipedia

    en.wikipedia.org/wiki/Meningioma

    Meningioma, also known as meningeal tumor, is typically a slow-growing tumor that forms from the meninges, the membranous layers surrounding the brain and spinal cord. [1] Symptoms depend on the location and occur as a result of the tumor pressing on nearby tissue. [3] [6] Many cases never produce symptoms. [2]

  4. Infantile hemangiopericytoma - Wikipedia

    en.wikipedia.org/wiki/Infantile_hemangiopericytoma

    Infantile hemangiopericytoma is a cutaneous condition characterized by single or multiple dermal and subcutaneous nodules that may be alarmingly large at birth or grow rapidly. [ 1 ] [ 2 ] Signs and symptoms

  5. Brain tumor - Wikipedia

    en.wikipedia.org/wiki/Brain_tumor

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 February 2025. Neoplasm in the brain Medical condition Brain tumor Other names Intracranial neoplasm, brain tumour, brain cancer Brain metastasis in the right cerebral hemisphere from lung cancer, shown on magnetic resonance imaging Specialty Neurosurgery, neuro-oncology Symptoms Vary depending on the ...

  6. The symptoms of influenza A and B can be identical, experts ...

    www.aol.com/news/symptoms-influenza-b-identical...

    It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the same. There are some notable differences between flu A and flu B strains ...

  7. Leptomeningeal cancer - Wikipedia

    en.wikipedia.org/wiki/Leptomeningeal_cancer

    Leptomeningeal cancer is a rare complication of cancer in which the disease spreads from the original tumor site to the meninges surrounding the brain and spinal cord. [1] This leads to an inflammatory response, hence the alternative names neoplastic meningitis (NM), malignant meningitis , or carcinomatous meningitis .

  8. Cutaneous meningioma - Wikipedia

    en.wikipedia.org/wiki/Cutaneous_meningioma

    Cutaneous meningioma, also known as heterotopic meningeal tissue, and rudimentary meningocele [1] is a developmental defect, and results from the presence of meningocytes outside the calvarium. [ 2 ] : 622

  9. Hemangioblastoma - Wikipedia

    en.wikipedia.org/wiki/Hemangioblastoma

    Hemangioblastomas, or haemangioblastomas, are vascular tumors of the central nervous system that originate from the vascular system, usually during middle age.Sometimes, these tumors occur in other sites such as the spinal cord and retina. [1]