Abstract：
INTRODUCTION:This study aimed to establish a specified magnetic resonance imaging (MRI) signal and size criterion for assessing the response of desmoid-type fibromatosis (DF). METHODS:This retrospective study included 129 patients with DF who received non-surgical therapy. All patients underwent pretreatment and 6-month-interval follow-up MRI for >3 years (6 follow-up visits). The correlation between signal grade and size was determined. Signal grade and size among three response groups (partial response [PR], stable disease [SD], progression disease [PD]) were compared. The specified signal and size criterion was established, used to assess tumour response at each follow-up, and compared with the reference. The Response Evaluation Criteria in Solid Tumours (RECIST)1.1 criterion at the end of the 3rd year was considered the reference. RESULTS:MRI signals were moderately correlated with size changes (r = -0.56 and -0.41 for T2 grade and contrast-enhanced T1 grade, respectively). Changes in T2 grade and size in the three response groups were significantly different (all p < 0.01). The signal and size criterion accurately predicted 95% of PR patients at 2nd follow-up and 81.2% of PD patients at the 3rd follow-up, while only 13.1% of PR and 56.3% of PD patients were predicted by RECIST1.1. However, the accuracy of the signal & size criterion for predicting SD was lower than that of RECIST1.1. CONCLUSIONS:MRI signal is useful in assessing the response of DF. Signal & size criterion can identify patients with PR and PD earlier than RECIST1.1.
journal_name
Clin Imagingjournal_title
Clinical imagingauthors
Zhu HC,Li XT,Ji WY,Li S,Sun YSdoi
10.1016/j.clinimag.2020.06.021subject
Has Abstractpub_date
2020-12-01 00:00:00pages
111-120eissn
0899-7071issn
1873-4499pii
S0899-7071(20)30222-9journal_volume
68pub_type
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