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MRI surveillance for local recurrence in extremity soft tissue sarcoma

2018; Elsevier BV; Volume: 45; Issue: 2 Linguagem: Inglês

10.1016/j.ejso.2018.08.032

1532-2157

Jong Woong Park, Hye Jin Yoo, Han-Soo Kim, Ja Young Choi, Hwan Seong Cho, Sung Hwan Hong, Ilkyu Han,

Cardiac tumors and thrombi

Introduction The role of MRI in surveillance for local recurrence (LR) remains uncertain in extremity soft tissue sarcoma (STS). The aims of this study were 1) to examine the usefulness of MRI in detecting LR, 2) to identify the characteristics of LR detected by MRI, and 3) to examine whether MRI surveillance is associated with oncologic outcome. Materials and Methods 477 patients who had regular surveillance for LR after surgery for extremity STS were reviewed. Surveillance was performed by routine MRI in 325 patients or other imaging modalities in 152 patients. Results The rate of MRI-detected LR, defined as clinically undetectable LR identified on MRI, was 10.5% in the MRI surveillance cohort. The detection rates of MRI-detected LR were significantly higher in the patients with high risk of LR. MRI-detected LRs were more commonly located in the thigh or buttock (p = 0.005), were smaller (p = 0.001) and had LRs without mass formation (p = 0.007) than non-MRI-detected LRs. On Kaplan-Meier analysis, patients with MRI-detected LR tended to have better post-LR survival (p = 0.104). Conclusion Routine MRI surveillance can detect a significant number of clinically undetectable LRs in extremity STS especially for LRs in the thigh or buttock, small LRs or LRs without mass formation.