University of Southern California


Case Mix/Number of Cases: Anorectal - 200, Endoscopy - 315, Colon/Rectal – 200. The anorectal and colon cases include a broad mix of both routine and complex procedures as well as laparoscopic versus open procedures. The resident is expected to identify the problems, arrive at a diagnosis, perform the surgical procedure, and follow the patient postoperatively. Unlike many programs where the fellowship is primarily preceptorial, the resident has primary responsibility for the running of the colorectal service at L.A. County Hospital with in-house supervision from the faculty.

Strengths of Program: This is an academically oriented program that offers broad experience in continence preserving colonic procedures. In addition, there is an AIDS Colorectal clinic where patients with HIV associated anorectal problems are managed. The program offers the breadth of colorectal surgery and its affiliating institutions consist of a large County Hospital, a University Referral Center Hospital, and a Cancer Center. An anorectal physiology laboratory including three-dimensional ultrasound is also part of this program. Aggressive surgical management including continence preserving management for recurrent rectal cancer characterizes the program. There is an integrated research program including health sciences research, gene therapy, colonic physiology, laparoscopic physiology, and laparoscopic cancer management.

Clinic and/or Office Experience: There is a weekly clinic at the L.A. County Hospital in which 70 patients are seen. There are several weekly private clinics where patients are seen as well. Office exposure is provided to allow the resident broad experience in preoperative, postoperative and outpatient care.

Interaction with General Surgery Residents: There is a full general surgical residency program at the University of Southern California. The colorectal fellow supervises the colorectal service at L.A. County Hospital. The service is supported by surgical residents, a physician assistant and a nurse for ancillary support and has medical students. The academic practice rotation includes a Nurse Practitioner and an intern. The colorectal resident is expected to be active in the teaching of residents and students. No in-house night call is required for the colorectal fellow.

Conferences: Anorectal and colonic physiology, research conference, weekly colorectal case review conference, multidisciplinary GI tumor board, colorectal journal club monthly, general surgical M&M conference weekly, general surgical Grand Rounds weekly, biweekly colorectal pathology conference. Visiting Professors provide colorectal symposiums two times a year. Residents also have the opportunity to participate in weekly GI grand rounds as well as bi-monthly IBD conference.

Elective Rotation: Available upon request.

Research Year: Available; Research year can be coupled with being the Ano-rectal Physiology fellow.

Requirement for Paper: All residents are expected to participate in scholarly activity, which is a requirement for graduation. Scholarly activity includes a research paper, a book chapter, literature review, and presentation at local or national meetings.

Opportunity to Attend Meetings: The Division funds attendance to the annual ASCRS Meeting and any other meetings at which a paper is presented. The Division also funds participation in laparoscopic surgery course sponsored by the program directors association

ACGME Institutional Requirements: For additional information regarding the ACGME Institutional Requirements, please go to the following link

Faculty Listing

Sang Lee, MD (Faculty and Division Chief)
Glenn Ault, MD (Faculty and Program Director)
Kyle Cologne, MD (Faculty and Associate Program Director)
M. Phillip Duldulao, MD (Faculty)
Christine Hsieh, MD (Faculty)
Andreas Kaiser, MD (Faculty and Research Director)
Adrian Ortega, MD (Faculty)
Joongho Shin, MD (Faculty)

Recent Fellow Placement

Research, University of Southern California - Los Angeles, CA
Private Practice - Kansas City, MO
Private Practice - Helena, MT
Kaiser Permanent - Woodland Hills, CA
Private Practice - Olympia, WA
Private Practice - Connecticut
Torrance Memorial - Torrance, CA
Tulane University - New Orleans, LA
University of Southern California - Los Angeles, CA
University of Miami - Miami, FL

Recent Fellow Publications

Glenn Ault, MD
Celeste Mendoza
1520 San Pablo St., Ste. 4300

Los Angeles, CA 90033

Number of Positions Offered:

  • Clinical: 2
  • Research: 1

Accreditation Status

Next Scheduled (Self-Study) Visit
March 1, 2023

Case Numbers – Past Five Years

Abdominal Procedure 13/14 14/15 15/16 16/17 17/18
Segmental Colectomy 112 140 149 154 160
Laparoscopic Resection 97 124 159 178 189
Low Anterior Resection 63 63 61 74 103
Abdominoperineal Resection 30 21 32 19 25
Proctocolectomy Total
Proctocolectomy w/Ileostomy
Proctocolectomy w/Ileoanal Reservoir
Prolapse Repair Total 17 19 23 19 23
Prolapse Repair Abdominal 11 11 17 10 16
Prolapse Repair Perineal 6 8 6 8 7
Stomas Total 193 183 6 160 187
Stomas Complications 4 12 12 13 10
Pelvic Dissections 115 106 112 110 147
Abdominal Procedure Total 395 452 514 420 474
Endoscopy/Pelvic Floor 13/14 14/15 15/16 16/17 17/18
Proctoscopy/Anoscopy 107 95 102 82 65
Colonoscopy Total 465 322 312 324 313
Colonoscopy Diagnostic 359 253 242 249 227
Colonoscopy w/Intervention 105 69 70 75 86
Pelvic Floor Evaluation 83 41 35 35 35
Endoscopy/Pelvic Floor Total 697 530 544 516 439
Anorectoal Procedure 13/14 14/15 15/16 16/17 17/18
Hemorrhoidectomy 60 67 69 65 69
Fistulotomy 16 20 80 70 80
Endorectal Advancement Flap
Fecal Incontinence Procedures 14 11 14 8 5
Internal Sphincterotomy 9 4 8 15 6
Transanal Excision 31 29 39 41 38
Anorectoal Procedure Total 419 337 437 364 345