C44.321

Clinical Causes: Prolonged exposure to ultraviolet (UV) radiation from the sun or tanning beds. Fair skin that is more susceptible to UV damage. History of frequent sunburns, especially during childhood or adolescence. Chronic skin injuries or irritation in the affected area. Weakened immune system, such as from immunosuppressive therapy or HIV infection. Exposure to certain carcinogenic substances, including arsenic. Previous history of skin cancer or precancerous skin lesions.

Key Symptoms: A persistent, scaly, or crusted bump on the nose that does not heal. A sore or open lesion that bleeds or oozes and fails to recover. A firm, raised nodule or growth on the nose with a rough surface. Changes in the skin's appearance, like redness, thickening, or pigmentation alterations. A wart-like growth that persists over time. In advanced cases, ulceration or bleeding from the lesion.

Diagnosis Path: Diagnosing squamous cell carcinoma involves a thorough physical examination of the skin. The healthcare provider may perform the following steps: - Visual inspection of the lesion to assess its appearance and characteristics. - Dermoscopy, a specialized skin examination tool, to gather more detail. - A skin biopsy, where a small tissue sample is taken from the suspicious lesion and examined under a microscope to confirm cancerous changes. - Additional imaging tests, such as ultrasound or CT scans, if the cancer appears to have spread beyond the skin.

Treatment Protocols: Treatment options aim to remove the cancerous tissue and prevent recurrence or spread. Common approaches include: - Surgical excision to remove the tumor along with some surrounding healthy tissue. - Mohs micrographic surgery, a precise technique that involves examining tissue layers during surgery until all cancer cells are eliminated. - Curettage and electrodessication, where cancerous tissue is scraped away and the area is cauterized. - Radiation therapy for lesions difficult to excise or in patients where surgery is contraindicated. - Topical treatments like 5-fluorouracil or imiquimod for superficial lesions. - Systemic therapies or targeted treatments in advanced cases with regional or distant metastasis. Follow-up care is critical to monitor for potential recurrence or new lesion development.