Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 57 3 2019 05 13 197 199 EN Asie Sadeghi Department of Pathology, Iran University of Medical Sciences, Tehran, Iran. Azam Mardani Department of Pathology, Iran University of Medical Sciences, Tehran, Iran. Shahin Mortazi Department of Pathology, Iran University of Medical Sciences, Tehran, Iran. Naser Rakhshani Department of Pathology, Iran University of Medical Sciences, Tehran, Iran. 2018 03 26 2018 12 15 Pleomorphic hyalinizing angiectatic tumor (PHAT) is a rare, slow-growing mass, which is locally aggressive and classified as tumors of borderline malignancy. In this study, we report a case of subcutaneous ankle mass in 43-year-old female since 2 years ago with a pathological diagnosis of PHAT, characterized by clusters of ectatic, fibrin-lined, and thin-walled vessels which are surrounded by a spindled or pleomorphic neoplastic stroma. https://acta.tums.ac.ir/index.php/acta/article/view/7143 https://acta.tums.ac.ir/index.php/acta/article/download/7143/5237