Derm Dx: A recurring firm and hyperpigmented nodule

A 45-year-old woman who is moderately obese presents with a recurrent lesion on her left leg. The lesion was removed elsewhere by shave excision but re-formed after several months. She was advised that the biopsy was benign. Trauma to the site has resulted in bleeding, but otherwise the lesion has been asymptomatic. The patient has a history of mild hypertension. ...