Nodules are growths or small lumps that develop in various parts of the body, often appearing as firm or soft masses within tissues or organs. These abnormal structures can vary in size, shape, and texture and may be benign or malignant. Nodules can develop in different areas of the body, including the skin, lungs, kidneys, thyroid gland, joints, or lymph nodes.
In dermatology, nodules refer to small solid bumps or lesions that protrude from the skin. They can arise from the epidermis, dermis, or subcutaneous tissues and are typically larger than papules. Skin nodules can manifest as raised or palpable structures, sometimes with a well-defined border and a different color or texture compared to the surrounding skin. They may be caused by various conditions, such as infections, inflammation, tumors, or abnormal tissue growth.
In other medical contexts, nodules can refer to abnormal growths affecting internal organs. For instance, pulmonary nodules are small, round lesions found in the lungs, being either benign or indicative of lung cancer. Similarly, thyroid nodules are growths that form in the thyroid gland, which can be either benign or potentially cancerous.
Medical professionals often evaluate nodules through physical examination, imaging tests, or biopsies to determine their nature and potential underlying cause. Treatment options for nodules depend on the specific diagnosis and may include observation, medication, surgical intervention, or other targeted therapies.
