Nodule

Nodule is a term used in medicine to describe a small aggregation of cells or tissue, often abnormal, that forms a lump or bump under the skin or within an organ. Nodules can be found in various parts of the body, including the lungs, thyroid, and skin. They can be benign (non-cancerous) or malignant (cancerous).

Causes

Nodules can be caused by a variety of conditions, including infections, inflammation, tumors, and cysts. In some cases, the cause of a nodule may be unknown.

Diagnosis

The diagnosis of a nodule often involves a physical examination, imaging tests such as X-rays or CT scans, and sometimes a biopsy to examine the cells of the nodule under a microscope.

Treatment

The treatment of a nodule depends on its cause. Some nodules may not require treatment if they are not causing symptoms or problems. Others may need to be removed surgically or treated with medication.

See also

• Lung nodule
• Thyroid nodule
• Skin nodule

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References

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External links

• Mayo Clinic - Lung Nodules
• Mayo Clinic - Thyroid Nodules
• American Academy of Dermatology - Skin Nodules

Further reading

• "Nodules and Tumors of the Skin: Clinical and Pathologic Correlations"
• "Evaluation and Management of Thyroid Nodules"
• "Lung Nodules: A Comprehensive Review"

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