title: Malignant phyllodes tumor with pleomorphic liposarcomatous stroma diagnosed by fine needle aspiration cytology: a case report.
abstract: BACKGROUND
  Liposarcomatous differentiation within a phyllodes tumor is extremely rare. Cytologic and histologic findings of a case of malignant phyllodes tumor with liposarcomatous stroma of the breast are presented.
  
  
  METHODS
  A 45-year-old female had a malignant phyllodes tumor with pleomorphic liposarcomatous stroma diagnosed by fine needle aspiration (FNA) cytology. The cytologic findings were representative of the histologic features.
  
  
  CONCLUSIONS
  Malignant phyllodes tumor of the breast can be diagnosed by FNA. It is very important to acknowledge the morphologic variants of sarcomatous stroma and to recognize the cytologic features of such rare tumors to prevent misdiagnosis as primary sarcomas of the breast. Preoperative diagnosis is important in planning the most appropriate type of treatment. It is also important to follow patients for long periods for recurrence and metastasis after surgery for this tumor.
authors.affiliation: Department of Pathology, San Jorge Hospital, Huesca, Spain.
authors.forename: Jesús
authors.initials: J
authors.lastname: Vera-Alvarez
authors.forename: Miguel
authors.initials: M
authors.lastname: Marigil-Gómez
authors.forename: Manuel
authors.initials: M
authors.lastname: Abascal-Agorreta
authors.forename: María Dolores
authors.initials: MD
authors.lastname: García-Prats
authors.forename: José Ignacio
authors.initials: JI
authors.lastname: López-López
authors.forename: Javier
authors.initials: J
authors.lastname: Pérez-Ruiz
mesh_terms: D001707:Biopsy, Needle; D001943:Breast Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008080:Liposarcoma / Q000473:pathology*; D008875:Middle Aged; D003557:Phyllodes Tumor / Q000473:pathology*