A 14 year old presents to the physician with hyperpigmented lesions (cafe-au-lait spots), hamartomas of the iris (Lisch nodules), and axiliary freckling (Crowe's sign). The patient had previously been diagnosed with neurofibromatosis, but is now complaining of generalized pain and tingling. The physician discovers multiple neurolemmomas, classifying the disease as a form of neurofibromatosis. Neurilemmomas are a neoplasm of myelin producing cells in the peripheral nervous system known as.
- Schwann cell
- Microglial cell
- Satellite cell
- Schwann cell (also called neurolemmocyte or neurolemma cell). In the PNS they serve as supportive, nutritive and service facilities for neurons. Gaps between adjacent Schwann cells are called nodes of Ranvier.
- ** There are no Schwann cells in the CNS; they myelin sheath in the CNS is formed by the processes of oligodendrocytes.
- Microglial cells: are the resident immune cells of the CNS, they function like macrophages.