Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài:Dermatofibrosarcoma presenting as a nodule in the breast of a 75-year-old woman: a case report | JOURNALOF medical LrcASE reports Dermatofibrosarcoma presenting as a nodule in the breast of a 75-year-old woman a case report Cottier et al. BioMed Central Cottier et al. Journal of Medical Case Reports 2011 5 503 http content 5 1 503 5 October 2011 Cottier et al. Journal of Medical Case Reports 2011 5 503 http content 5 1 503 JOURNALOF medical case reports CASE REPORT Open Access Dermatofibrosarcoma presenting as a nodule in the breast of a 75-year-old woman a case report Olivier Cottier 1 Maryse Fiche2 Jean-Yves Meuwly3 and Jean-Frangois Delaloye11 Abstract Introduction Dermatofibrosarcoma protuberans is a rare neoplasm of soft tissues and its location in the breast is extremely uncommon. Confusion is possible with other primary breast lesions. Case presentation A 75-year-old Caucasian woman presented with a mass in her left breast 21 years after being diagnosed with invasive ductal carcinoma of the right breast treated by a right mastectomy and axillary dissection followed by radiotherapy and breast reconstruction. Mammography revealed a dish-shaped skin nodule formation in the upper outer quadrant of her left breast. Echography confirmed the presence of a lesion measuring X cm. Based on imaging the diagnosis was a probable angiosarcoma. Due to the presence of a pacemaker for cardiac arrhythmia and full anticoagulation therapy for a pulmonary embolism magnetic resonance imaging and a biopsy were not done. We proceeded directly to a quadrantectomy and the final diagnosis revealed a dermatofibrosarcoma protuberans 1. 8 cm in its greatest microscopic dimension located cm from the upper surgical margin. To ensure the wide resection margins required for this type of neoplasm a re-excision was performed. Conclusion A dermatofibrosarcoma protuberans of the breast is an uncommon discovery. The aim of this case report is to highlight the importance of the surgical procedure in cases of the discovery of