Case of congenital dermatofibrosarcoma protuberans: Change of clinical features and pathological findings over 10 years. Issue 11 (16th October 2013) - Iwata, Yohei; Kodera, Masanari; Usuda, Toshikazu; Murakami, Sakae; Hisaoka, Masanori; Arima, Masaru; Yagami, Akiko; Matsunaga, Kayoko