The etiological diagnosis for the colorectal strictures can be very difficult. With the colonoscopy, it was possible to obtain samples with direct vision of the lesion. Consequently, the cytologic efficiency improved, with similar or even better results than histopathology. In the present study (107 patients) it was used the cytopathology performed during colonoscopy. After a specimen was obtained, it was smeared on glass slide, fixed in 95% alcohol, stained by HE, and examined microscopically, with conclusions during the procedure. The results were compared and further correlated to the histopathology of surgical specimen or based on clinical follow-up in those case not submitted to operation. The results showed a striking degree of correlation between both exams. For the cytopathology there were no inconclusive results, false-negative were less frequent than with histopathology, and only one case of false-positive (rectal villus adenoma) was observed. Considering the type, localization and perviousness of the lesion, similar conclusions were drawn, and did not affect the results, except that there were more false-negatives in both exams when the lesions were impervious. The cytopathological and histopathological studies were both highly sensitive and specific for the diagnosis of carcinoma. In conclusion, cytopathology performed during colonoscopy is safe and efficient in the study of colorectal strictures, which contributes to improve the orientation of these patients.
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Aliment Pharmacol Ther
January 2025
Division of Gastroenterology and Hepatology, Department of Medicine, McGill University Health Center, Montreal, Quebec, Canada.
Background: Novel colorectal cancer endoscopic surveillance techniques for inflammatory bowel disease (IBD) have recently been developed.
Aims: Compare the efficacy of currently available techniques for dysplasia detection in colonic IBD.
Methods: We conducted a systematic literature search from inception to March 2024 for randomized controlled trials (RCTs) or prospective cohort studies enrolling adults with IBD and having surveillance colonoscopy for dysplasia screening.
J Imaging Inform Med
January 2025
Faculty of Medicine and Pharmacy of Rabat, Mohammed V University of Rabat, Rabat, 10000, Morocco.
Gastrointestinal (GI) disease examination presents significant challenges to doctors due to the intricate structure of the human digestive system. Colonoscopy and wireless capsule endoscopy are the most commonly used tools for GI examination. However, the large amount of data generated by these technologies requires the expertise and intervention of doctors for disease identification, making manual analysis a very time-consuming task.
View Article and Find Full Text PDFJAMA Netw Open
January 2025
Fred Hutchinson Cancer Research Center, Hutchinson Institute for Cancer Outcomes Research and Biostatistics Program, Public Health Sciences Division, Seattle, Washington.
Importance: Several noninvasive tests for colorectal cancer screening are available, but their effectiveness in settings with low adherence to screening and follow-up colonoscopy is not well documented.
Objective: To assess the cost-effectiveness of and outcomes associated with noninvasive colorectal cancer screening strategies, including new blood-based tests, in a population with low adherence to screening and ongoing surveillance colonoscopy.
Design, Setting, And Participants: The validated microsimulation model used for the decision analytical modeling study projected screening outcomes from 2025 to 2124 for a simulated cohort of 10 million individuals aged 50 years in 2025 and representative of a predominantly Hispanic or Latino patient population served by a Federally Qualified Health Center in Southern California.
J Gastroenterol Hepatol
January 2025
Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Background And Aim: Colorectal cancer (CRC) is a significant global health burden, and screening can greatly reduce CRC incidence and mortality. Previous studies investigated the economic effects of CRC screening. We performed a systematic review to provide the cost-effectiveness of CRC screening strategies across countries with different income levels.
View Article and Find Full Text PDFTransl Cancer Res
December 2024
Department of Anorectal Surgery, the Second Hospital of Tianjin Medical University, Tianjin, China.
Background: Early detection for colorectal cancer (CRC) can enhance the patient prognosis. We aimed to validate the combined multi-gene detection in plasma of , , , and for early diagnosing of CRC in this prospective study.
Methods: Overall, 124 participants including 45 CRC patients, 8 advanced adenoma patients, 34 small polyp patients, and 37 normal controls who underwent colonoscopy were enrolled.
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