Clinical significance of the tail-like pattern in soft-tissue sarcomas on magnetic resonance imaging

Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association
Takeshi MoriiShoichi Ichimura

Abstract

An infiltrating abnormal signal around soft-tissue tumors along the fascial, neurovascular, or musculature plane on magnetic resonance imaging (T2-weighted, gadolinium-enhanced T1-weighted, or short-tau inversion recovery) is recognized as the "tail-like pattern". The tail-like pattern was intensively analyzed in myxofibrosarcoma, but not in other sarcomas. We aimed to answer some key questions about the tail-like pattern such as its incidence and effect on oncological outcomes. The presence of the tail-like pattern in 114 soft-tissue sarcomas was evaluated on T2-weighted images or gadolinium-enhanced T1-weighted images, or both. We analyzed the incidence of the tail-like pattern in all cases and in specific histological subtypes. We also assessed the clinical backgrounds of the presence of the tail-like pattern and its impact on achieving adequate surgical margins and oncological outcomes, including local recurrence and overall survival. The tail-like pattern was detected in 50% of cases. The tail-like pattern was most common in myxofibrosarcoma and undifferentiated pleomorphic sarcoma, and less common in low-grade sarcomas. Trans-compartmental invasion of the tumor and high-grade malignancy were common clinical backgrounds fo...Continue Reading

Citations

Dec 13, 2019·Virchows Archiv : an International Journal of Pathology·Susan M Armstrong, Elizabeth G Demicco
Aug 22, 2020·Expert Review of Anticancer Therapy·Robert NakayamaMakoto Endo

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