The word "meningocele" is a medical term used to describe a congenital disorder in which a portion of the spinal cord protrudes from the back of the neck encased in a sac. The word is spelled as /məˈnɪŋɡəʊsiːl/ in IPA phonetic transcription. In this word, the "meningo" portion comes from the Greek word "meninx," meaning membrane, and the "cele" portion comes from the Greek word "kele," meaning hernia or swelling. Together, they form the full term "meningocele," which accurately describes the condition.
A meningocele refers to a type of birth defect that affects the spinal cord and the protective membranes covering it, known as meninges. Specifically, it is a sac-like protrusion of the meninges through a hole or opening in the spinal column. This condition typically occurs during fetal development when the neural tube, which later becomes the spinal cord and brain, does not close properly.
The meningocele presents as a fluid-filled sac that may vary in size, usually located along the midline of the back. Unlike another similar condition called meningomyelocele, in which the sac also contains part of the spinal cord and nerves, a meningocele does not involve the neural tissues. Instead, it is filled only with the cerebrospinal fluid that normally surrounds the spinal cord and brain.
The precise causes of meningoceles are not yet fully understood but are likely multifactorial, involving both genetic and environmental factors. In some cases, it can be associated with genetic syndromes or occur as a result of exposure to certain teratogenic substances during pregnancy.
If left untreated, a meningocele can lead to complications such as infection, spinal cord damage, or subsequent development of hydrocephalus (abnormal accumulation of cerebrospinal fluid in the brain).
Treatment typically involves surgical intervention to remove the sac and repair the opening in the spinal column. Follow-up care may be necessary to monitor for any potential long-term effects and provide necessary support for the individual's overall health and well-being.
A protrusion of the membranes of the brain or spinal cord through a defect in the skull or spinal column.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "meningocele" is derived from two Greek roots: "meninx" meaning "meninges" (the membranous coverings of the brain and spinal cord) and "kele" meaning "tumor" or "hernia". Therefore, "meningocele" refers to a medical condition characterized by a protrusion of the meninges through an opening in the skull or spinal column.