1 MCQs in Dermatology for NEET PG
A 68-year-old man with a 20-year history of sun exposure presents with a 1.5 cm indurated plaque on his left temple with ill-defined borders, central erosion, and surrounding erythema. Dermoscopy reveals a target-like appearance with peripheral telangiectasia. Histopathology shows infiltrative growth pattern with perineural invasion. Which of the following is the most important prognostic factor that would necessitate adjuvant radiotherapy in this patient?
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