title: Malignant, locally recurring cystosarcoma phyllodes in an adolescent female. A case report.
abstract: A 16-year-old girl presented with a large and rapidly growing cystosarcoma phyllodes in her right breast. The excised tumour showed unequivocal malignant characteristics at light and electron microscopy and was oestrogen-receptor negative. After repeated early local recurrences, a subcutaneous mastectomy ultimately led to local tumour control and the patient is now disease free 5.5 years after diagnosis.
mesh_terms: D000293:Adolescent; D001943:Breast Neoplasms / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008408:Mastectomy; D009364:Neoplasm Recurrence, Local; D003557:Phyllodes Tumor / Q000473:pathology / Q000601:surgery*; D019736:Prostheses and Implants; D011960:Receptors, Estrogen / Q000032:analysis
chemical_list: D011960:Receptors, Estrogen