Abstract
The aim of this article is to summarize the MRI features of each sarcoma subtype and to correlate them with its pathological findings. Literature review through PubMed/Medline database to identify relevant articles on uterine sarcomas, with a special emphasis on their MRI findings and pathological features. While several, more generalistic, MRI findings of a uterine tumour should raise suspicion for malignancy (including irregular contour, intra-tumoral necrosis/hemorrhage and low ADC values), some particular features may suggest their specific histological subtype such as the gross lymphovascular invasion associated with endometrial stromal sarcomas, the “bag of worms” appearance of the low-grade endometrial stromal sarcoma and the “lattice-like” aspect of adenosarcomas which results from the mixed composition of solid and multiseptated cystic components. Knowledge of the different histological uterine sarcoma subtypes, their specific MRI features and comprehension of their pathological background allows for a more confident diagnosis and may indicate the correct histological subtype.
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Abbreviations
- ADC:
-
Apparent diffusion coefficient
- AS:
-
Adenosarcoma
- ESS:
-
Endometrial stromal sarcoma
- CA125:
-
Cancer antigen 125
- CE-MRI:
-
Contrast-enhanced magnetic resonance imaging
- DWI:
-
Diffusion-weighted imaging
- HG-ESS:
-
High-grade endometrial stromal sarcoma
- HLRCC:
-
Hereditary leiomyomatosis and renal cell carcinoma
- LDH:
-
Lactate dehydrogenase
- LG-ESS:
-
Low-grade endometrial stromal sarcoma
- LM:
-
Leiomyoma
- LMS:
-
Leiomyosarcoma
- MRI:
-
Magnetic resonance imaging
- T2WI:
-
T2-weighted imaging
- SI:
-
Signal intensity
- UUS:
-
Undifferentiated uterine sarcoma
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All authors contributed to this paper with conception and design, literature review, critical revision, and approval of the final version. Manuscript writing and preparation of figures and tables were made by FAS. JF contributed with partial writing of the manuscript concerning pathology concepts and collected histology and macroscopy figures. TMC collected all cases and supervised the manuscript writing and editing.
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Sousa, F.A.e., Ferreira, J. & Cunha, T.M. MR Imaging of uterine sarcomas: a comprehensive review with radiologic-pathologic correlation. Abdom Radiol 46, 5687–5706 (2021). https://doi.org/10.1007/s00261-021-03263-w
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DOI: https://doi.org/10.1007/s00261-021-03263-w