Application of ultrasound and magnetic resonance imaging in diagnosis of extra-abdominal desmoid-type fibromatosis

Abstract Objective : To investigate the imaging characteristics of ultrasound and magnetic resonance imaging in extra-abdominal desmoid-type fibromatosis. Methods : Ultrasonic images of 58 patients with extra-abdominal desmoid-type fibromatosis and MRI images of 59 patients with extra-abdominal desmoid-type fibromatosis were analyzed retrospectively. The imaging characteristics of the two methods in the diagnosis of extra-abdominal desmoid-type fibromatosis were analyzed. Results : Among the 58 patients detected by ultrasound, obvious strong cord-like, columnar, and flocculent echoes were seen in 50 patients; blood flow signal was abundant in 37 patients. Among the 59 patients detected by MRI, fat-suppressed sequence scanning mainly presented high signal intensities. Spot-like and cordlike low signal intensities could be seen in lesions. Enhancement was obvious in 59 patients. In 58 patients detected by ultrasound, preoperative tumor diameter (4.46 ± 1.95) cm was shorter than the postoperative pathological result (6.33 ± 1.32) cm ( P 0.05). Conclusion : Ultrasound can reveal the fiber composition of desmoid-type fibromatosis well. MRI has certain advantages in diagnosing the true size and invasion range of desmoid-type fibromatosis, and can provide imaging reference for preoperative and postoperative evaluation.