Podiatric Dermatology Quiz: Can You Identify This Skin Lesion?

Can you identify the condition shown in the photo on the left? This pre-cancerous skin lesion occurs on sun-exposed areas. It appears as a scaly, erythematous papule with a hyperkeratotic texture. The risk of one of these lesions transforming into a squamous cell carcinoma ranges between 0.025 to 16 percent per year. Treatment options for these lesions include cryotherapy, curettage and electrodessication, and shave excision. Topical therapies include 5-fluorouracil, diclofenac 3% gel and imiquimod cream. Which of the following is your diagnosis? a) Pyogenic granuloma b) Kaposi’s sarcoma c) Seborrheic keratosis d) Actinic keratosis e) Spitz nevus Editor’s note: This blog is adapted from the handbook, Skin Disease Of The Lower Extremities: A Photographic Guide, from Tracey Vlahovic, DPM, and Stephen M. Schleicher, MD. The book is available for purchase at www.lowerextremityderm.com . The e-book version is available for purchase at https://tinyurl.com/7itt66v , https://tinyurl.com/7j44vez and https://tinyurl.com/couepf5 . The answer to the last blog (https://www.podiatrytoday.com/blogged/can-you-diagnose-malignant-lesion ) is c) Basal cell carcinoma.