Grants & Projects per year
Personal profile
Research interests
- Robotic, laparoscopic, and conventional surgery for colon and rectal cancer, familial polyposis, diverticulitis, and rectal prolapse
- High resolution anoscopy for anal cancer screening and prevention
- Inflammatory bowel disease, Crohn's disease, and ulcerative colitis
- Robotic and minimally invasive transanal excision of rectal polyps or cancer
- Treatment of anorectal abscess, fistula, fissure, anal condyloma, hemorrhoids, constipation, and fecal incontinence
- Screening and diagnostic colonoscopy
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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A Safety and Effectiveness Prospective Blinded clinical study to validate xBar system as monitoring tool for anastomotic leaks detection
Nagle, D. (PI), Ahn, N. (CoPI), Denoya, P. I. (CoPI) & Yelika, S. (CoPI)
06/20/24 → 12/31/26
Project: Research
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SafeHeal Diverting Ileostomy Pivotal Study (SH-SOC23)
Nagle, D. (PI), Ahn, N. (CoPI), Denoya, P. I. (CoPI) & Yelika, S. (CoPI)
03/26/25 → 02/12/26
Project: Research
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Who Should Undergo Drain Studies After Percutaneous Drainage in Complicated Diverticulitis?
Froehlich, M. H., Wady, H., Roy, I. V., Smithy, W. B., Yelika, S. B., Ahn, N. J., Denoya, P. I. & Nagle, D. A., Jul 2026, In: World Journal of Surgery. 50, 7, p. 1797-1806 10 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Robotic-Assisted Natural-Orifice Intracorporeal Anastomosis and Transrectal Extraction Procedure for Cancer: A Modified Approach With a Side-to-End Anastomosis and Stapled Colotomy Closure
Froehlich, M. H., Heimberger, M. A., Nagle, D. A. & Ahn, N., Nov 2025, In: Diseases of the Colon and Rectum.Research output: Contribution to journal › Article › peer-review
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Trends in operative time and patient outcomes in robotic colostomy reversal: surgeons’ short-term pain for patients’ long-term gain
Froehlich, M. H., Van Roy, I., Krichmar, A., Mazis, C. M., Roberts, D. A., Yelika, S. B., Ahn, N. J., Denoya, P. I. & Nagle, D. A., 2025, (Accepted/In press) In: Surgical Endoscopy.Research output: Contribution to journal › Article › peer-review
1 Scopus citations -
Prenatally Diagnosed Large Lung Lesions: Timing of Resection and Perinatal Outcomes
Bose, S. K., Stratigis, J. D., Ahn, N., Pogoriler, J., Hedrick, H. L., Rintoul, N. E., Partridge, E. A., Flake, A. W., Khalek, N., Gebb, J., Teefey, C. P., Soni, S., Hamaguchi, R., Moldenhauer, J., Adzick, N. S. & Peranteau, W. H., Dec 2023, In: Journal of Pediatric Surgery. 58, 12, p. 2384-2390 7 p.Research output: Contribution to journal › Article › peer-review
15 Scopus citations -
Pediatric cervical spine injury in the United States: Defining the burden of injury, need for operative intervention, and disparities in imaging across trauma centers
Kim, W., Ahn, N., Ata, A., Adamo, M. A., Entezami, P. & Edwards, M., Feb 2021, In: Journal of Pediatric Surgery. 56, 2, p. 293-296 4 p.Research output: Contribution to journal › Article › peer-review
15 Scopus citations