Understanding Nodules: Causes, Types, and Treatment Approaches in Dermatology and Pulmonology

nodule

elevated, firm, circumscribed lesion; deeper in dermis than a papule; 1 to 2 cm in diameter; examples are dermatofibroma, erythema nodosum, lipomas, melanoma, hemangioma, neurofibroma

A nodule is a small, solid or cystic, abnormal growth that can occur in various parts of the body, including the skin, lungs, thyroid gland, and other organs. Nodules can vary in size and appearance, and can be single or multiple.

In dermatology, nodules are skin lesions that are usually deeper and more firm compared to other lesions such as papules or pustules. Nodules can be caused by a variety of factors such as infections, inflammatory conditions, and tumors. Common examples of skin nodules include sebaceous cysts, lipomas, and neurofibromas.

In pulmonology, nodules are abnormal growths in the lung that are detected through imaging tests such as chest X-rays or CT scans. Pulmonary nodules can be benign or malignant, and their cause can range from infection to lung cancer. Further evaluation through additional imaging tests or biopsies may be necessary to determine the nature of the nodule and the proper treatment approach.

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