Paraneoplastic Dermatoses in Breast Cancer: Malignant Acanthosis Nigricans with Tripe Palm

Our patient was a 43-year-old, single black woman, born and living in Paracambi, State of Rio de Janeiro, who worked as a surgical instrumentalist. She was sent to our sector of dermatology due to hypochromia and diffuse skin roughness that had first appeared 8 years previously. She had been diagnosed 6 months before admission with ductal infiltrating metastatic carcinoma in the right breast, with therapeutic failure of chemotherapy and radiotherapy. Her menarche had occurred at age 13 years, she reported normal menstrual cycles from there on, and she had never been pregnant. She denied neoplasias and other comorbidities in her family history.