Shear Wave Elastography in Rectal Cancer Staging, Compared with Endorectal Ultrasonography and Magnetic Resonance Imaging

Fan, Zhihui; Cong, Yue; Zhang, Zhong-Yi; Li, Rongjie; Wang, Song; Yan, Kun

doi:10.1016/j.ultrasmedbio.2019.03.006

Cited by 11 publications

(9 citation statements)

References 25 publications

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“…It was first used in GI diseases in 2013 by Dillman et al (10), who conducted a Crohn's disease animal model. Several studies have reported the value of using SWE, especially in inflammatory bowel disease (IBD) and rectal neoplasms (10)(11)(12)(13)(14)(15)(16)(17)(18)(19). For instance, it has proven effective in the differentiation of fibrotic from inflammatory strictures in Crohn's disease (14,18) and in assessing and staging rectal tumors (12,13,15).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have reported the value of using SWE, especially in inflammatory bowel disease (IBD) and rectal neoplasms (10)(11)(12)(13)(14)(15)(16)(17)(18)(19). For instance, it has proven effective in the differentiation of fibrotic from inflammatory strictures in Crohn's disease (14,18) and in assessing and staging rectal tumors (12,13,15). However, there are only a few studies of SWE involving healthy subjects, especially trans-abdominally (20), and the normal elasticity values of the bowel wall measured by SWE remain uncertain (18,(21)(22)(23)(24)(25).…”

Section: Introductionmentioning

confidence: 99%

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Using shear wave elasticity in normal terminal ileum of a healthy southwest Chinese population: a pilot study of reference elasticity ranges

Zhao

Gao²,

Zhuang

et al. 2021

Quant Imaging Med Surg

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Background: Elastography has not been widely applied to the gastrointestinal tract. The bowel wall's normal elasticity values are still unknown and are necessary for studies of gastrointestinal diseases. This study explores the feasibility of using shear wave elastography (SWE) to measure the terminal ileum wall stiffness in healthy subjects and establish the corresponding normal ranges of elasticity values.Methods: This observational study recruited 139 healthy adult volunteers from April to July 2020.All examinations were performed in the anterior terminal ileum wall. Shear wave velocity (SWV) and Young's modulus (E) values were measured in the midline on longitudinal sections and replicated different operators' obtained data. Also, bowel wall thickness (BWT) and depth were recorded. Subgroups were classified according to the volunteers' gender, age, body mass index (BMI), BWT, and depth. The intra-class correlation coefficient was calculated to analyze inter-and intra-operator consistency, and independent t-tests and one-way analysis of variance were used to explore the differences in variables. Results:The inter-and intra-operator agreements were good to excellent by different operators and in the replicated measurements (intra-operator consistency: 0.963; inter-operator consistency: 0.842). In all volunteers, the mean SWV was 1.08±0.25 m/s, the mean E value was 3.84±1.84 kPa, and the median BWT was 2 mm. SWV and E did not show significant differences according to gender (P=0.589), age (P=0.738), BMI (P=0.678), depth (P=0.375), or BWT (P=0.410). BWT did not show significant differences according to age (P=0.142), BMI (P=0.863), or depth (P=0.368).Conclusions: SWE can be used in terminal ileum wall stiffness measurements with good reliability, and the SWE values do not appear to vary significantly according to different physiological factors. The corresponding elasticity ranges of the terminal ileum in normal adults were acquired.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using shear wave elasticity in normal terminal ileum of a healthy southwest Chinese population: a pilot study of reference elasticity ranges

Zhao

Gao²,

Zhuang

et al. 2021

Quant Imaging Med Surg

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“…The studies unanimously showed an increase in accuracy when compared with ERUS, although with lower sensitivity, specificity, PPV, NPV and accuracy compared to studies including both early and advanced tumor stages. A possible explanation is that the stiffness of malignant rectal tissue increases with T category [22,26]. Hence, advanced malignant tumors yield higher elastography values than adenomas and early carcinomas.…”

Section: Discussionmentioning

confidence: 99%

Can Ultrasound Elastography Discriminate between Rectal Adenoma and Cancer? A Systematic Review

Loft

Pedersen

Rahr

et al. 2021

Cancers

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Background: Rectal cancer is a common malignancy. Since the introduction of bowel-screening programs, the number of patients with advanced adenomas and early rectal cancer has increased. Despite improved diagnostics, the discrimination between rectal adenomas and early rectal cancer (i.e., pT1–T2) remains challenging. The purpose of this systematic review was to evaluate the diagnostic performance of endorectal ultrasound (ERUS) elastography in discriminating rectal adenomas from cancer. Method: Using PRISMA guidelines, a systematic search was performed on PubMed, Embase, and MEDLINE databases. Studies evaluating the primary staging of rectal adenomas and cancer using ERUS elastography were included. Results: Six studies were identified; three evaluated the discrimination between adenomas and cancer; two evaluated adenomas and early rectal cancer (i.e., pT1–T2); one evaluated performance on different T categories. All studies reported increased diagnostic accuracy of ERUS elastography compared to ERUS. Sensitivity, specificity and accuracy ranged 0.93–1.00, 0.83–1.00 and 0.91–1.00, respectively, when discriminating adenomas from cancer. In the differentiation between adenomas and early rectal cancer, the sensitivity, specificity and accuracy were 0.82–1.00, 0.86–1.00 and 0.84–1.00, respectively. Conclusion: Elastography increases the accuracy of ERUS and may provide valuable information on malignant transformation of rectal lesions.

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“…It can avoid the blindness of resection of the low pelvic tumor. In addition, it can also avoid tumor implantation caused by compression ( 6 – 8 ). Meanwhile, in many studies, laparoscope had lower blood loss, less analgesics, better recovery speed and quality, earlier restoration of intestinal function, and shorter hospital stay as compared with open surgery ( 6 – 8 ).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it can also avoid tumor implantation caused by compression ( 6 – 8 ). Meanwhile, in many studies, laparoscope had lower blood loss, less analgesics, better recovery speed and quality, earlier restoration of intestinal function, and shorter hospital stay as compared with open surgery ( 6 – 8 ). However, laparoscope has its drawbacks, such as two-dimensional images, low motion flexibility, and unstable lens.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Clinical Efficacy and Safety Between da Vinci Robotic and Laparoscopic Intersphincteric Resection for Low Rectal Cancer: A Meta-Analysis

Zhang

et al. 2021

Front. Surg.

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Background and Aims: The intersphincteric resection (ISR) is beneficial for saving patients' anus to a large extent and restoring original bowel continuity. Laparoscopic ISR (L-ISR) has its drawbacks, such as two-dimensional images, low motion flexibility, and unstable lens. Recently, da Vinci robotic ISR (R-ISR) is increasingly used worldwide. The purpose of this article is to compare the feasibility, safety, oncological outcomes, and clinical efficacy of R-ISR vs. L-ISR for low rectal cancer.Methods: PubMed, EMBASE, Cochrane Library, and Web of Science were searched to identify comparative studies of R-ISR vs. L-ISR. Demographic, clinical, and outcome data were extracted. Mean difference (MD) and risk ratio (RR) with their corresponding confidence intervals (CIs) were calculated.Results: Five studies were included. In total, 510 patients were included, of whom 273 underwent R-ISR and 237 L-ISR. Compared with L-ISR, R-ISR has significantly lower estimated intraoperative blood loss (MD = −23.31, 95% CI [−41.98, −4.64], P = 0.01), longer operative time (MD = 51.77, 95% CI [25.68, 77.86], P = 0.0001), hospitalization days (MD = −1.52, 95% CI [−2.10, 0.94], P < 0.00001), and postoperative urinary complications (RR = 0.36, 95% CI [0.16, 0.82], P = 0.02).Conclusions: The potential benefits of R-ISR are considered as a safe and feasible alternative choice for the treatment of low rectal tumors.

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Shear Wave Elastography in Rectal Cancer Staging, Compared with Endorectal Ultrasonography and Magnetic Resonance Imaging

Cited by 11 publications

References 25 publications

Using shear wave elasticity in normal terminal ileum of a healthy southwest Chinese population: a pilot study of reference elasticity ranges

Using shear wave elasticity in normal terminal ileum of a healthy southwest Chinese population: a pilot study of reference elasticity ranges

Can Ultrasound Elastography Discriminate between Rectal Adenoma and Cancer? A Systematic Review

Comparison of Clinical Efficacy and Safety Between da Vinci Robotic and Laparoscopic Intersphincteric Resection for Low Rectal Cancer: A Meta-Analysis

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