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Colorectal Surgeon (colon & rectum), Surgical Specialist
17 years of experience

Video profile


Education ?

Medical School Score Rankings
University of Virginia (1995)
Top 25%

Awards & Distinctions ?

Patients' Choice Award (2011)
Compassionate Doctor Recognition (2011 - 2012)
American Board of Surgery
American College of Surgeons
American Board of Colon and Rectal Surgery

Affiliations ?

Dr. Nguyen is affiliated with 15 hospitals.

Hospital Affiliations



  • Methodist Dallas Medical Center
    3500 W Wheatland Rd, Dallas, TX 75237
    Top 25%
  • Texas Health Presbyterian Hospital Plano
    6200 W Parker Rd, Plano, TX 75093
    Top 25%
  • Baylor University Medical Center
    3500 Gaston Ave, Dallas, TX 75246
    Top 25%
  • Texas Health Harris Methodist Hospital Azle
    108 Denver Trl, Azle, TX 76020
    Top 50%
  • Baylor Medical Center At Garland
    2300 Marie Curie Dr, Garland, TX 75042
    Top 50%
  • Methodist Medical Center
    1441 N Beckley Ave, Dallas, TX 75203
    Top 50%
  • Medical Center Of Plano
    3901 W 15th St, Plano, TX 75075
  • Methodist Richardson Medical Center
    401 W Campbell Rd, Richardson, TX 75080
  • North Central Medical Center - West Park Campus
    130 S Central Expy, McKinney, TX 75070
  • Richardson Regional Med Ctr
  • Harris Methodist - Springwood
    1608 Hospital Pkwy, Bedford, TX 76022
  • Texas Health Plano
  • Doctors Hospital at White Rock Lake
  • North Texas Hospital
    2801 S Mayhill Rd, Denton, TX 76208
  • Medical Center Of Mckinney
    4500 Medical Center Dr, McKinney, TX 75069
  • Publications & Research

    Dr. Nguyen has contributed to 8 publications.
    Title Risk Factors Associated with Requiring a Stoma for the Management of Anal Cancer.
    Date July 2004
    Journal Diseases of the Colon and Rectum

    PURPOSE. Combination chemotherapy and radiation therapy has become the standard of care for epidermoid carcinoma of the anus. This treatment modality has allowed for preservation of the anus in most patients, sparing them the morbidity of a stoma. Some patients will ultimately require a stoma as a result of salvage surgery or to manage complications of chemoradiotherapy. We hypothesized that tumor characteristics and radiation dose had an impact on the requirement for stoma formation. METHODS. Data on all patients with epidermoid carcinoma of the anal canal who were treated with chemoradiation with curative intent at Ochsner Clinic Foundation were entered into a prospective registry. We excluded four patients who were lost to follow-up and one patient who died during chemoradiation therapy. RESULTS. Fifty-one patients were followed for an average of 5.6 years. Primary tumor size average was 3.9 cm. Six patients had Stage I disease, 33 patients had Stage II disease, and 12 patients had Stage III disease (N+ disease). The average radiation dose was 57 +/- 17 Gy. Univariate analysis revealed pretreatment tumor size to be the only significant factor associated with the need for a stoma ( P = 0.01). Radiation dose was not an important factor ( P = 0.38). An additional finding was that the pretreatment tumor size and N+ disease were significant predictors of mortality; however, logistic-regression analysis revealed that N+ disease was the only independent predictor of mortality ( P = 0.02). CONCLUSIONS. Patients who have large tumors on presentation should be made aware of the possibility of requiring salvage surgery to treat persistent or recurrent disease. Toxicities from chemoradiotherapy do arise, but patients are not at increased risk for requiring a stoma.

    Title Spontaneous Perforation of the Right Hepatic Duct.
    Date December 2001
    Journal Hepato-gastroenterology

    Spontaneous perforation of the biliary ductal system is a rare cause of peritonitis with a high morbidity and mortality rate. We present a case of an 80-year-old female who presented to the Emergency Department with acute onset abdominal pain and peritoneal signs. She was taken to the operating room for exploratory laparotomy and discovered to have a perforation of her right hepatic duct. Several risk factors were found to play a role in her biliary perforation: biliary calculi, infection, and vessel thrombosis. She underwent a cholecystectomy, choledochotomy with removal of gallstones, repair of the perforation, and placement of a T-tube. She had a prolonged recovery in the intensive care unit and was eventually discharged to a skilled nursing facility. We conclude that the management of this unique and highly fatal disease can be applied with an excellent outcome.

    Title Polyethylene Glycol-superoxide Dismutase Inhibits Lipid Peroxidation in Hepatic Ischemia/reperfusion Injury.
    Date June 2001
    Journal Critical Care (london, England)

    BACKGROUND: Hepatic injury after ischemia/reperfusion is attributed to the development of oxygen free radical (OFR)-mediated lipid peroxidation--a process that can be measured through its byproducts, specifically malondialdehyde. The use of free radical scavengers can offer significant protection against OFR-induced liver injury. We hypothesize that a new potent OFR scavenger, polyethylene glycol-superoxide dismutase (PEG-SOD), can inhibit OFR-mediated lipid peroxidation in hepatic ischemia/reperfusion injury. METHODS: Twelve male Sprague-Dawley rats (300-350 g) were subjected to occlusion of the left and middle hepatic arteries and portal veins for 90 min, followed by 120 min reperfusion. PEG-SOD (5000 units/kg) was given intravenously before vascular occlusion and again immediately upon reperfusion to six rats. Normal saline was given to the remaining six rats to be used as a control group. The right hepatic lobe (used as internal control) and left hepatic lobe were harvested separately and tissue malondialdehyde was measured. RESULTS: A marked increase in lipid peroxide was found in the normal saline group after 2 h reperfusion. Treatment with PEG-SOD prevented the rise in tissue malondialdehyde. The mean difference in the malondialdehyde between the left and right hepatic lobes were 13.20 +/- 6.35 and 1.70 +/- 3.65 nmol/g in the normal saline (control) and PEG-SOD groups, respectively. This difference was found to be statistically significant (P < 0.005) using Student's t-test. CONCLUSIONS: PEG-SOD can effectively attenuate hepatic ischemia/reperfusion injury by inhibiting OFR-mediated lipid peroxidation.

    Title Xenogeneic Patch Closure of the Small Intestine: a Novel Approach to Fistula Management.
    Date July 2000
    Journal European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes

    Previous work from our laboratory demonstrated the feasibility of utilizing placental-derived collagen tissue matrix (CTM) as a bowel wall substitute. We reasoned that this technique would also be suitable in managing intestinal fistulae. To test this hypothesis, we created a chronic cecal fistula in rats and randomly managed some with primary repair and others with CTM replacement. Leak rates, mortality, bursting pressures and histologic scores were similar, suggesting that a chronic fistula can be successfully managed with either a CTM or primary repair.

    Title New Assistive Technology for Passive Standing.
    Date June 1999
    Journal The Journal of Burn Care & Rehabilitation

    The anesthetic skin of patients with spinal cord injuries makes these patients a high-risk population for burn injuries. Innovations in rehabilitation engineering can now provide the disabled with mechanical devices that allow for passive standing. Passive standing has been shown to counteract many of the effects of chronic immobilization and spinal cord injury, including bone demineralization, urinary calculi, cardiovascular instability, and reduced joint range of motion and muscular tone. This article will describe several unique assistive devices that allow for passive standing and an improvement in daily living for people with disabilities.

    Title Self-inflicted Burn Injury.
    Date October 1997
    Journal The American Journal of Emergency Medicine
    Title Evaluation of a New External Condom Catheter System.
    Date June 1997
    Journal Medical Progress Through Technology

    The purpose of this study was to perform a biomechanical performance study and a clinical trial on a new external condom catheter system. The biomechanical performance study demonstrated that the vented connector failed following exposure to urine for 14 days. In addition, angulation of the inlet adapter of anti-reflux valve of the urinary leg bag to an angle of 35 degrees (+/-5 degrees) caused complete obstruction of urinary flow. A clinical trial of the new condom catheter with its inner flap revealed twisting of the catheter that interrupted urinary flow in four of ten patients. This catheter twisting was not observed in condom catheters without inner flaps. Furthermore, this new system is not easily applied or removed by patients with neurosensory deficits or musculoskeletal weakness. Design modifications of the vent within the connection tubing, the anti-reflux valve in the collection bag, the condom catheter with its inner flap, as well as the leg bag attachments should remarkably improve the performance of this new urinary drainage system.

    Title "flaming Dr. Pepper"--another Cause of Recreational Burn Injury.
    Date February 1997
    Journal The American Journal of Emergency Medicine

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