Final Answer:
The 5 cm irregular lentigo maligna on the cheek of the 75-year-old woman is indicative of a type of melanoma associated with prolonged sun exposure. A prompt biopsy is crucial to confirm the diagnosis and guide appropriate treatment.
Step-by-step explanation:
The presence of a 5 cm irregular lentigo maligna, commonly referred to as Hutchinson freckle, is concerning for melanoma. Lentigo maligna is often associated with chronic sun exposure, especially in elderly individuals. The irregular borders and gradual enlargement suggest malignant transformation. Given the potential for malignancy, a prompt biopsy is essential for accurate diagnosis, determining the extent of the lesion, and planning appropriate intervention.
Melanoma, especially in its lentigo maligna form, necessitates early detection and intervention to prevent metastasis. Treatment options may include surgical excision, Mohs micrographic surgery, or other forms of therapy depending on the depth and stage of the melanoma. Regular surveillance and sun protection measures are crucial in the post-treatment period.
Early recognition of suspicious skin lesions, particularly in elderly individuals with a history of significant sun exposure, is vital for timely diagnosis and management. Public awareness campaigns emphasizing the importance of regular skin examinations and the significance of any changes in moles or pigmented lesions can contribute to early detection of melanoma.