Neuroma
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| Neuroma Classification and external resources | |
| ICD-O: | 9570/0 |
|---|---|
| MeSH | D009463 |
Neuroma originally was defined as a tumor of a nerve. (Neuro- is from the Greek for nerve). Today, neuroma commonly refers to any tumor of cells of the nervous system.[1] though some use the term only to describe tumors of the cell of the nerve and related fibers.[2]
Because of the ambiguity inherent to the term, it is usually better to use a more specific description when possible.
Neuromas can be either benign or malignant.
Types
Non-tumors
Although the "-oma" suffix usually is usually reserved for tumors, the term "neuroma" is also sometimes used for conditions that are not usually considered tumorous:
- Traumatic neuroma follows different forms of nerve injury (often as a result of surgery). They occur at the end of injured nerve fibres as a form of uneffective, unregulated nerve regeneration; it occurs most commonly near a scar, either superficially (skin, subcutaneous fat) or deep (e.g., after a cholecystectomy). They are often very painful. It is also known as "pseudoneuroma".[3]
- Morton's neuroma (a mononeuropathy of the foot) is not considered a tumor in modern sources,[4] and therefore cannot be considered a true neuroma. The name is entrenched, and remains commonly used, but "Morton's metatarsalgia" is more accurate.
True tumors
According to ICD-O and MeSH, the term "Neuroma" refers to a nerve sheath tumor. Subtypes include:
- Neurinoma (Neurilemmoma) - a benign slow growing tumor of the neurolemma (myelin sheath) of a nerve fibre.
- Acoustic neurinoma (or "acoustic neuroma")
Ganglioneuroma could be considered a type of neuroma, though it is not a nerve sheath tumor.
References
- ↑ Neuroma at eMedicine Dictionary
- ↑ n_07/12569500 at Dorland's Medical Dictionary
- ↑ n_07/12569601 at Dorland's Medical Dictionary
- ↑ -664076278 at GPnotebook
Nervous tissue tumors (ICD-O 9350-9589) | |
|---|---|
| Miscellaneous tumors (9350-9379) | Craniopharyngioma - Pinealoma - Chordoma |
| Glioma (9380-9489) | Gliomatosis cerebri - Oligoastrocytoma - Choroid plexus papilloma - Ependymoma - Astrocytoma (Pilocytic astrocytoma, Glioblastoma multiforme) - Dysembryoplastic neuroepithelial tumour - Oligodendroglioma - Medulloblastoma - Primitive neuroectodermal tumor |
| Neuroepitheliomatous (9490-9529) | Ganglioneuroma - Neuroblastoma - Atypical teratoid rhabdoid tumor - Retinoblastoma - Esthesioneuroblastoma |
| Meningiomas (9530-9539) | Meningioma |
| Nerve sheath tumor (9540-9579) | Neurofibroma (Neurofibrosarcoma, Neurofibromatosis) - Schwannoma - Neurinoma - Acoustic neuroma - Neuroma |
| see also brain tumors (though not all brain tumors are of nervous tissue) | |
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
