C44.509

Clinical Causes: Prolonged exposure to ultraviolet (UV) rays from the sun or tanning beds Skin damage from radiation therapy Exposure to carcinogenic chemicals or substances Immunosuppression (weakened immune system) Presence of precancerous skin lesions Genetic factors that increase susceptibility to skin cancer Previous history of skin cancer

Key Symptoms: A new, unusual growth or sore that doesn’t heal Changes in the appearance of existing moles or spots, such as asymmetry, irregular borders, or uneven coloring Persistent redness or swelling in a localized area Lesions that may be raised, ulcerated, or crusted Unexplained bleeding or oozing from the skin Appearance of a firm, irregular lump or bump on the skin

Diagnosis Path: Diagnosis of this type of skin cancer involves a combination of clinical evaluation and diagnostic tests. A healthcare provider will examine the affected area, noting any abnormal features. A biopsy — where a small tissue sample is removed and examined under a microscope — is essential to confirm malignancy and identify the specific type of skin cancer. Additional imaging tests, such as ultrasound, CT scans, or MRI, may be performed to determine the extent of the tumor and whether it has spread to nearby tissues or lymph nodes. Staging helps guide appropriate treatment strategies.

Treatment Protocols: Treatment options depend on the type, size, and spread of the tumor, as well as the patient’s overall health. Common approaches include: - **Surgical excision:** Removing the tumor and some surrounding healthy tissue to ensure complete removal. - **Mohs surgery:** A precise technique where thin layers of cancer-containing skin are progressively removed and examined until only cancer-free tissue remains. - **Cryotherapy:** Freezing the tumor with liquid nitrogen, typically used for superficial skin cancers. - **Radiation therapy:** Using targeted radiation to destroy cancer cells, especially when surgery isn’t feasible. - **Topical treatments:** Application of medicated creams for superficial lesions. - **Targeted therapy or chemotherapy:** In cases where the cancer has spread, systemic treatments may be considered. Early detection and treatment significantly improve outcomes, making routine skin examinations and prompt medical evaluation important for suspicious skin changes.