Abstract Background Crohn’s disease with perianal involvement is a more aggressive phenotype, accounting for approximately one-third of patients, and is associated with high rates of hospitalization and surgery. Diagnosis involves clinical, laboratory, endoscopic, histological, and radiological data. In this context, a proctological examination under sedation facilitates identification of the affected anatomy, but does not assess its functionality. The proposed study was an anorectal manometry study for sensory-motor correlation of the anal canal, given the pelvic floor damage. Methods This cross-sectional, descriptive, and quantitative study was approved by the Research Ethics Committee of the Faculty of Medicine of Botucatu - Brazil. The sample consists of 20 patients who signed the informed consent form and underwent conventional manometry during the follow-up period at the Inflammatory Bowel Disease Outpatient Clinic at Hospital of the Clinics – Botucatu Medical School, from August 2022 to January 2025. Results The profile studied was slightly higher in the male population, at 55%, with a mean age of 41.5 years, 70% white, and a mean time since diagnosis of 9 years. 35% presented some type of comorbidity such as hypertension or diabetes, and of these, 65% presented clinical and endoscopic remission of the disease. The results show that 90% of the operated sample had some manometric alteration, and in 81.82%, manometric alterations occurred even after healing of the fistula diagnosed by pelvic MRI. Conclusion Despite the sample size, there is a tendency toward earlier diagnosis of anorectal functional alterations, even in asymptomatic patients, reinforcing the hypothesis of this tool’s contribution to the assessment of anorectal disease. Further studies, including high-resolution manometry, should be conducted to confirm this trend, which could support surgical planning decisions and the introduction of new therapies. References: 1. Belilos, E. A., Post, Z., Anderson, S., DeMeo, M. The Clinical Utility of Anorectal Manometry: A Review of Current Practices. Gastro Hep Advances 2024 Oct 10;4(2):100562. DOI: 10.1016/j.gastha.2024.10.002 2. Truong A, Zaghiyan K, Fleshner P. Anorectal Crohn’s Disease. Surg Clin North Am. 2019 Dec;99(6):1151-1162. DOI: 10.1016/j.suc.2019.08.012 3. Lewis R. T. 90(1):83-97. DOI: 10.1016/j.suc.2009.09.004 Conflict of interest: Ms. Yamamoto, Lucy Junka: No conflict of interest de Oliveira Vizioli, Ednir: No conflict of interest Baima, Julio: No conflict of interest Saad-Hossne, Rogerio: No conflict of interest Yukie Sassaki, Ligia: No conflict of interest
Yamamoto et al. (2026) studied this question.