Growing plaque on foot
Was this irregularly shaped, hyperpigmented 2.5 cm × 1 cm plaque a malignant melanoma—or something else?
An 82-year-old African American woman with a history of pancreatic cancer came into the clinic for evaluation of a growing, asymptomatic lesion on her right dorsal foot. She first noticed the lesion a year ago, when it was pinpoint size. It was now a 2.5 cm × 1 cm hyperpigmented plaque.
The lesion was dark brown and black and had irregular borders. It also had a central hyperkeratotic area (FIGURE 1). There was no inguinal lymphadenopathy. We performed an incisional biopsy.
FIGURE 1
Growing lesion with irregular borders
What is your diagnosis?
How would you manage this condition?
