Comparison of flexible endoscopy and magnetic resonance imaging in determining the tumor height in rectal cancer

• Published in: Cancer reports Vol. 6; no. 2; pp. e1705 - n/a
• Main Authors: Basendowah, Mohammed H., Ezzat, Mohammed A., Khayyat, Aseel H., Alamri, Eyad Saleh A., Madani, Turki A., Alzahrani, Anas H., Bokhary, Rana Y., Badeeb, Arwa O., Hijazi, Hussam A.
• Format: Journal Article
• Language: English
• Published: United States John Wiley & Sons, Inc 01-02-2023; John Wiley and Sons Inc; Wiley
• Subjects: Age; Agreements; Body Mass Index; Chemotherapy; Chronic obstructive pulmonary disease; Colorectal cancer; comparison; Demographics; Endoscopy; flexible endoscopy; Heart failure; Histopathology; Humans; Hypothyroidism; Liver diseases; Magnetic resonance imaging; Magnetic Resonance Imaging - methods; Melanoma; Metabolic disorders; Metastasis; MRI; Original; Patients; Radiation therapy; rectal cancer; Rectal Neoplasms - diagnosis; Skin cancer; Surgery; Ulcers; histopathology; comparison; MRI; flexible endoscopy; rectal cancer
• ISSN: 2573-8348; 2573-8348
• DOI: 10.1002/cnr2.1705

Background
Several modalities are available for the diagnosis of rectal cancer, including conventional gold standard rigid endoscopy and recent flexible endoscopy and magnetic resonance imaging (MRI). Each modality affects the management of these patients.
Aim
To compare the accuracy of flexible endoscopy and MRI in the measurement of tumor height in patients with rectal cancer.
Methods and Results
This study included 174 patients with rectal cancer who underwent flexible endoscopy and MRI for the measurement of tumor height. Data on patient demographics, comorbidities, treatment, and histopathology were identified and collected. We evaluate intraclass correlation coefficient (ICC) and Bland–Altman plot to test the agreement between the measurements. ICC were excellent with an ICC of 89% (95%CI 48%–99%). The mean ± standard deviation of the distance from the anal verge to the distal part of the tumor was 7.73 ± .47 for flexible endoscopy and 6.21 ± 0.39 for MRI, with mean difference of 1.52 (p ˂ .001). The accordance between the two modalities was not affected by sex, age, body mass index, histopathology, or metastasis.
Conclusion
Excellent agreement between flexible endoscopy and MRI was noted, and no factor was found to affect such concordance.