1. Transvaginal Ultrasound Versus Magnetic Resonance Imaging for Assessing Myometrial Infiltration in Endometrioid Low Grade Endometrial Cancer
- Author
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Juan Luis Alcázar, Begoña Gastón, Inés García de Eulate, Ana Modroño, Juan Carlos Muruzabal, Rosa Guarch, and Sonia Lapeña
- Subjects
Sensitivity and Specificity ,Tertiary care ,030218 nuclear medicine & medical imaging ,03 medical and health sciences ,0302 clinical medicine ,Biopsy ,Humans ,Medicine ,Neoplasm Invasiveness ,Radiology, Nuclear Medicine and imaging ,In patient ,Prospective Studies ,Prospective cohort study ,Neoplasm Staging ,Ultrasonography ,030219 obstetrics & reproductive medicine ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,business.industry ,Endometrial cancer ,Ultrasound ,Magnetic resonance imaging ,medicine.disease ,Magnetic Resonance Imaging ,Endometrial Neoplasms ,Transvaginal ultrasound ,Myometrium ,Female ,business ,Nuclear medicine ,Carcinoma, Endometrioid - Abstract
OBJECTIVE To compare the diagnostic accuracy of transvaginal ultrasound (TVS) and magnetic resonance imaging (MRI) for assessing myometrial infiltration (MI) in patients with low grade endometrioid endometrial cancer. METHODS Observational prospective study performed at a single tertiary care center from 2016 to 2020, comprising 156 consecutive patients diagnosed by endometrial sampling as having an endometrioid grade 1/grade 2 endometrial cancer. TVS and MRI were performed prior to surgical staging for assessing MI, which was estimated using subjective examiner's impression and Karlsson's method for both TVS and MRI. During surgery, intraoperative assessment of MI was also performed. Definitive pathological study considered as reference standard. Diagnostic accuracy for ultrasound, MRI, and intraoperative biopsy was estimated and compared. RESULTS Sensitivity and specificity of TVS for detecting deep MI were 75 and 73.5% for subjective impression and 65 and 70% for Karlsson method, respectively (P = .54). Sensitivity and specificity of MRI for detecting deep MI were 80 and 87% for subjective impression and 70 and 71.3% for Karlsson method. MRI subjective impression showed a significant better specificity than MRI Karlsson method (P = .03). MRI showed better specificity than TVS when subjective impression was considered (P
- Published
- 2021
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