title: Tamoxifen-associated vasculitis in a breast cancer patient.
abstract: BACKGROUND
  Estrogen plays a critical role in breast cancer. Thereafter, endocrine therapy is a standard of care in patients with breast carcinoma, expressing ER or PR.
  
  
  METHODS
  Herein we report the case of a 53-year old patient, who developed cholestasis and vasculitis during the treatment with tamoxifen. This toxicity was reversable after the removal of the drug. Thereafter she continued adjuvant treatment for breast carcinoma with anastrazole. Since tamoxifen has been widely indicated for patients with breast carcinoma, we did a literature review, looking for other cases with this type of toxicity.
  
  
  CONCLUSIONS
  This case is the third with vasculitis informed in the literature, but the first one that additionally developed cholestasis and arthritis. Although it is rare, we discuss the indication of this drug in the actual era, where aromatase inhibitors offer a better security profile.
authors.affiliation: Department of Hematología Oncología, Hospital Angeles del Pedregal, Mexico City, Mexico. myrnac@prodigy.net.mx
authors.forename: Myrna
authors.initials: M
authors.lastname: Candelaria
authors.forename: Rafael
authors.initials: R
authors.lastname: Hurtado-Monroy
authors.forename: Pablo
authors.initials: P
authors.lastname: Vargas-Viveros
authors.forename: Silvia
authors.initials: S
authors.lastname: Carrillo-Muñnoz
authors.forename: Alfonso
authors.initials: A
authors.lastname: Duenas-Gonzalez
mesh_terms: D018931:Antineoplastic Agents, Hormonal / Q000009:adverse effects*; D001943:Breast Neoplasms / Q000188:drug therapy*; D002779:Cholestasis / Q000139:chemically induced*; D005260:Female; D006801:Humans; D008875:Middle Aged; D020845:Selective Estrogen Receptor Modulators / Q000009:adverse effects*; D017445:Skin Diseases, Vascular / Q000139:chemically induced*; D013629:Tamoxifen / Q000009:adverse effects*; D014657:Vasculitis / Q000139:chemically induced*
chemical_list: D018931:Antineoplastic Agents, Hormonal; D020845:Selective Estrogen Receptor Modulators; D013629:Tamoxifen