What is Histiocytosis? Histiocytosis is the uncontrolled and excessive production of histiocytes. Histiocytes are white blood cells, also called macrophages. Bone marrow-derived histiocytes fight bacteria, viruses, and other pathogens of foreign diseases that enter...
What is Schwannoma Of the Brain? Schwannomas are relatively common low-grade brain tumors (abnormal proliferation of the cells) that arise from the myelin sheath (Schwann-cells) surrounding the cranial nerves. The cranial nerves are 12 nerves that originate from the...
What is Oligoastrocytoma of the Brain? Oligoastrocytoma is a type of brain tumor that results from the rapid proliferation of astrocytoma and oligodendrocyte cells. These cells usually protect and support nerve cells. It usually develops in people between the ages of...
What is Hepatosplenic T cell Lymphoma? Hepatosplenic T cell lymphoma is a rare cancer that results from the excessive and uncontrolled production of white blood cells, especially cytotoxic T cells that invade the spleen, liver, and bone marrow. Neutrophils, basophils,...
What is a Meningioma? A meningioma is a tumor of the meninges. The meninges are the three layers of membrane that cover the brain and spinal cord. These membranes provide support and blood supply to the brain, spinal cord, and skull. Meningiomas are low-grade tumors....
