57-year-old woman with 40-year history of growth on right mid back that has changed in color and size. This is a 2.2cm rough plaque with variable colors. Previous biopsy done 15-20 years ago was benign. Patient has a history of BCC and SCC. Biopsy was read as a squamous cell carcinoma by a dermatologist.
Subsequent reading by a dermatopathologist found this to be an inflamed seborrheic keratosis. This is a common case of pathology discordance.