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| The value of MRI in the diagnosis of desmoid tumor |
| LIN Bing-quan1, XU Yi-kai1, LI Hua-yu2, CAO Jing1 |
| 1. Diagnostic Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China; 2. Department of Radiology, 458th Hospital of PLA, Guangzhou 510602, China |
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Abstract Objective: To summarize MRI manifestation of desmoid tumor and to investigate the fundamental histo-pathology. MRI finding of desmoid tumor including location, shape, margin, signal intensity on T1WI and T2WI, homogeneity of signal, and enhancement were analyzed retrospectively in this study. Methods: Eight cases of desmoid tumor proved by surgery were enrolled. MRI manifestations were comparatively studied with histopathologic findings. T1 and T2 sequence were used in non-contrast scan, while STIR sequence were performed in 4 cases and enhanced scan in 7 cases. Results: ①Six cases were located in haunch, 1 case was in right chest wall and 1 case in the soft tissue around left femoral bone; ②Desmoid tumor’s size was various, the shape of 7 cases was irregular, 1 case was elliptical; ③The margin in six cases was indistinct with soft tissue around the tumor. The margin in 1 case was well defined; ④Compare to the signal intensity of muscle, 6 cases were isointense and 2 cases were slightly hypointese on T1WI. On T2WI 4 cases were hyperintense and 4 cases were slightly hyperintense but all of their signal intensity was lower than that of fat and the interior was inhomogeneous. Four cases which used STIR appeared hyperintense. Two cases were homogeneously enhanced and 5 cases were inhomogeneously enhanced. Conclusion: There are certain regularities of desmoid tumor on MRI, and these are helpful in determining the nature of the tumor.
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Received: 25 March 2009
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Corresponding Authors:
XU Yi-kai
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2009, Vol. 20 
