PT - JOURNAL ARTICLE AU - D Nejc AU - G. Pasz-Walczak AU - J. Piekarski AU - P. Pluta AU - A. Bilski AU - P. Sek AU - P. Potemski AU - A. Durczynski AU - K. Wronski AU - A. Jeziorski TI - Astonishingly rapid growth of malignant cystosarcoma phyllodes tumor in a pregnant woman— a case report AID - 10.1136/ijgc-00009577-200807000-00041 DP - 2008 Jul 01 TA - International Journal of Gynecologic Cancer PG - 856--859 VI - 18 IP - 4 4099 - http://ijgc.bmj.com/content/18/4/856.short 4100 - http://ijgc.bmj.com/content/18/4/856.full SO - Int J Gynecol Cancer2008 Jul 01; 18 AB - There are very few reports concerning the presence of malignant cystosarcoma phyllodes (CSP) in breasts of pregnant women. In the hereby described case, a 28-year-old woman presented in our department with huge (18 × 11 × 8 cm) tumor of left breast, 2 weeks after labor. The patient discovered a tumor in 34th week of pregnancy, 6 weeks before labor. Histopatholgic examination of excised tumor revealed the presence of malignant CSP tumor. Simple mastectomy was proposed to patient as a best treatment modality. However, the patient refused. She underwent excision of tumor bed (2-cm tumor-free margin was achieved). Despite insufficient treatment, she remains free of disease 20 months after the wide excision of breast malignancy. It is not known how pregnancy influences prognosis of patients with malignant CSP. Lack of such information prompted us to describe the clinical course of our patient.