Objective: This retrospective study aimed to evaluate the consistency of transrectal contrast-enhanced ultrasonography (TR-CEUS) with post-operative pathology and the value of contrast-enhanced ultrasonography (CEUS) in staging surgically treated cervical cancer when combined with conventional ultrasonography (US).
Methods: From October 2020 to March 2023, hospitalized patients with stage IB and II cervical cancer confirmed by total hysterectomy were consecutively enrolled. The standard images of US and CEUS by transabdominal (TA-US/CEUS) and transrectal (TR-US/CEUS) approaches and magnetic resonance imaging (MRI) were acquired, on which the size and stage of the tumors were evaluated, and the consistency of results with the pathological specimen was analyzed.
Results: Thirty-nine patients with cervical cancer were finally enrolled in this study. The results showed that CEUS significantly improved the reliability of TA-US in evaluating tumor diameter; the intraclass correlation coefficient (ICC) was from 0.672 to 0.735. TR-US indicated good reliability with or without the addition of CEUS (ICC = 0.796 and 0.780). In terms of tumor staging, CEUS improved the consistency of transabdominal (weighted κ values from 0.689 to 0.731) and transrectal staging of tumors (κ from 0.758 to 0.785), and the staging of TR-US combined with TR-CEUS had the highest consistency with post-operative results, similar to MRI (κ, respectively 0.785 and 0.789). CEUS can reflect the heterogeneity of the tumor. Heterogeneous enhancement and perfusion defects were more common in >2 cm cervical cancer (50%, 20/40 and 52.5%, 21/40), respectively, and perfusion defects were more common in moderately to poorly differentiated tumors (66.67%, 20/30).
Conclusion: For stage IB and IIA cervical cancer, CEUS can aid in assessing the International Federation for Gynecology and Obstetrics staging of tumors alongside TA-US and TR-US. The combination of TR-US and TR-CEUS has shown good consistency with pathology in the staging of cervical cancer, comparable to that of MRI.
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| http://dx.doi.org/10.1016/j.ultrasmedbio.2023.06.018 | DOI Listing |
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