A Rare Case of the Malignant Phyllodes Breast Tumor - Case Report

Abstract The phyllodes tumor (cystosarcoma phyllodes) is a rare fibroepithelial neoplasm presenting less than 1% of all breast tumors. Based on histologic features World Health Organization (WHO) classifies into benign, border line and malignant tumors (the rarest). Only around 5-15% of all malignant form cases metastasize hematogeneosly in the lung, bone and brain. Clinically are mostly presented the phyllodes tumor mostly presents as a rapid growth, palpabile, painless, elastic, oval or lobulated masses over 5 cm among women between 40 to 50 years old. On ultrasound and mammography these tumors usually resembles other round or oval benign lesions, mostly like fibroadenomas. These tumors on ultrasound and mammography usually resembles other round or oval benign tumors, mostly like fibroadenomas. Ultrasound guided core needle biopsiy (CNB) performed under ultrasound is a gold standard for palpabile breast masses. Surgical resection remains the gold standard of treatment. To date, there is no consensus regarding the recommendations for radiotherapy, hormonal therapy and systemic chemotherapy. We present the case of 30 years old woman, who noted a painless mass in her left breast, which was gradually increasing in size. Clinical, ultrasound and magnetic resonance examination confirmed the existence of tumor formation without the possibility of making an accurate diagnosis. Malignant phyllodes tumor was initially diagnosed by core biopsy. The patient underwent a radical modified mastectomy and postoperative radiotherapy. During the follow-up for the first 11 months, our patient has been feeling well without signs of local recurrence and metastasis. The aim of our case is to emphasize the importance of early diagnosis and treatment of this rare breast tumor. Treatment is based on the size and the extent of the mass with surgical resection and adequate margins extremely important in successful outcome. We present the case of 30 old woman, who noted a painless mass in her left breast, which was gradually increasing in size. She was diagnosed with ultrasound and magnetic resonance imaging and the diagnosis of the malignant phyllodes tumor was confirmed by patohistological verification.