Nodule (medicine)
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| Nodule | |
|---|---|
| File:Nodules.svg | |
| Synonyms | Nodular lesion |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Lump, swelling, pain |
| Complications | Infection, malignancy |
| Onset | Varies depending on cause |
| Duration | Can be temporary or persistent |
| Types | N/A |
| Causes | Inflammation, infection, neoplasm |
| Risks | Smoking, exposure to radiation, genetic predisposition |
| Diagnosis | Physical examination, imaging studies, biopsy |
| Differential diagnosis | Cyst, tumor, abscess |
| Prevention | Depends on underlying cause |
| Treatment | Observation, surgical removal, medication |
| Medication | N/A |
| Prognosis | Depends on underlying cause and treatment |
| Frequency | Common |
| Deaths | N/A |
A nodule in medicine is a growth of abnormal tissue. Nodules can develop just below the skin. They can also develop in deeper skin tissues or internal organs.
Definition[edit]
The American Heritage Dictionary defines a nodule as a small knot, protuberance, or swelling. In medicine, a nodule is a solid, spherical, abnormal growth, or lump, of tissue that is present in or on the body. It is less than 2 cm (0.8 inches) in size. If the lesion is larger than 2 cm, it is referred to as a tumor.
Causes[edit]
Nodules can be caused by a variety of conditions, including infections, inflammation, tumors or neoplasms. The type of cells involved can also differ, ranging from epithelial cells to fat cells.
Diagnosis[edit]
The diagnosis of a nodule depends on the location of the nodule. For example, a nodule on the skin or under the skin can often be diagnosed by physical examination. However, a nodule in an internal organ usually requires imaging tests for diagnosis.
Treatment[edit]
The treatment of a nodule depends on the cause. Some nodules will resolve spontaneously and require no treatment. Others may require surgical removal or medical treatment.
See also[edit]
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