Giant malignant phyllodes tumor with(99m)Tc-Ses-tamibi accumulation: Report of a case

We report a case of a giant malignant phyllodes tumor examined by(99m)Tc-ses-tamibi (MIBI) mammoscintigraphy. The patient was a 51 year-old woman who complained of bleeding from a large mass in her right breast. The tumor was well circumscribed, with an ulcerized surface. The accumulation of(99m)Tc-MIBI in the tumor was recognized on(99m)Tc-MIBI scintigraphy. A standard radical mastectomy was performed with a wide margin of skin. The resected specimen measured 20 X 17 X 13 cm, weighed 2100 g and was histologically diagnosed as a malignant phyllodes tumor. The skin defect was reconstructed by a rectus abdominis musculocutaneous flap, with good cosmetic results.(99m)Tc-MIBI scintigraphy may have the potential to distinguish a malignant from benign phyllodes tumors.