Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Natural evolution of desmoplastic fibroblastoma on magnetic resonance imaging: a case report. | Kamata et al. Journal of Medical Case Reports 2011 5 139 http content 5 1 139 JOURNALOF medical Ur Case REPORTS CASE REPORT Open Access Natural evolution of desmoplastic fibroblastoma on magnetic resonance imaging a case report 1 1 1 2 1 3 1 Yusaku Kamata Ukei Anazawa Hideo Morioka Takeshi Morii Keiko Miura Makio Mukai Hiroo Yabe and Yoshiaki Toyama1 Abstract Introduction Desmoplastic fibroblastoma collagenous fibroma is a recently described tumor thought to arise predominantly from subcutaneous tissue or skeletal muscle. The natural evolution of this tumor on magnetic resonance imaging has never been described to the best of our knowledge. We herein report a case of desmoplastic fibroblastoma arising in the thigh and show the longitudinal magnetic resonance imaging findings. Case presentation A 60-year-old Japanese man presented with swelling of the medial side of his right thigh and he complained of nighttime pain and slight tenderness. Magnetic resonance imaging demonstrated a 4 X 4 cm mass in the right thigh. Open biopsy was performed. The mass was diagnosed histologically as a benign fibrous tumor and we maintained follow-up without surgical therapy. After one year magnetic resonance imaging showed an increase in tumor size to 4 X 5 cm but the histologic findings were the same as those obtained one year earlier. Resection was performed with narrow surgical margins. Pathologic diagnosis was desmoplastic fibroblastoma. Two years after surgery the patient is free from pain and shows no signs or symptoms of recurrence. Conclusion The natural evolution of desmoplastic fibroblastoma is characterized by no changes in patterns on magnetic resonance imaging despite increasing size. This finding is clinically helpful for distinguishing desmoplastic fibroblastoma with increasing pain from the desmoid tumor. Introduction In 1995 Evans 1 first described desmoplastic fibroblas-toma a unique fibrous soft tissue tumor comprising spindle-shaped to .
