University of California San Francisco

Lygia Stewart - 144x
Lygia
Stewart
MD

Professor of Surgery
Division of General Surgery
Chief of the General Surgery Section, San Francisco VA Medical Center
Associate Director, General Surgery Residency Program 

Address

35 Medical Center Way
San Francisco, CA 94143
United States

Email: [email protected]
Phone: 415-750-2057
Fax: 415-750-2181

Education

Institution Degree Dept or School End Date
University of California Diversity, Equity, and Inclusion Champion Training 2018
University of California, San Francisco Clinical Fellowship

Board Certifications

  • American Board of Surgery, 1991; renewed 2000
  • American Board of Surgery, Surgical Critical Care, 1993; renewed 2003

Publications

MOST RECENT PUBLICATIONS FROM A TOTAL OF 43
  1. Pathogenesis of pigment gallstones in Western societies: the central role of bacteria.
    Stewart L, Oesterle AL, Erdan I, Griffiss JM, Way LW| | PubMed
  2. Gram-negative bacteria killed by complement are associated with more severe biliary infections and produce more tumor necrosis factor-alpha in sera.
    Stewart L, Oesterle AL, Griffiss JM, Jarvis GA, Aagaard B, Way LW| | PubMed
  3. Patch testing to cosmetics and topical drugs.
    Stewart LA| | PubMed
43
View all 43 Publications
MOST RECENT PUBLICATIONS FROM A TOTAL OF 43
  1. Alteration in the gut microbiome is associated with changes in bone metabolism after laparoscopic sleeve gastrectomy.
    Wu KC, McCauley KE, Lynch SV, Nayak RR, King NJ, Patel S, Kim TY, Condra K, Fadrosh D, Nguyen D, Lin DL, Lynch K, Rogers SJ, Carter JT, Posselt AM, Stewart L, Schafer AL| | PubMed
  2. Intestinal Calcium Absorption Decreases After Laparoscopic Sleeve Gastrectomy Despite Optimization of Vitamin D Status.
    Wu KC, Cao S, Weaver CM, King NJ, Patel S, Kim TY, Black DM, Kingman H, Shafer MM, Rogers SJ, Stewart L, Carter JT, Posselt AM, Schafer AL| | PubMed
  3. Prebiotic to Improve Calcium Absorption in Postmenopausal Women After Gastric Bypass: A Randomized Controlled Trial.
    Wu KC, Cao S, Weaver CM, King NJ, Patel S, Kingman H, Sellmeyer DE, McCauley K, Li D, Lynch SV, Kim TY, Black DM, Shafer MM, Özçam M, Lin DL, Rogers SJ, Stewart L, Carter JT, Posselt AM, Schafer AL| | PubMed
  4. Mesh on the move: a case report of total transmural surgical mesh migration causing bowel obstruction.
    Leach JR, Manoukian B, Stewart L| | PubMed
  5. Ampullary stenosis and choledocholithiasis post Roux-En-Y gastric bypass: challenges of biliary access and intervention.
    Wisneski AD, Carter J, Nakakura EK, Posselt A, Rogers SJ, Cello JP, Arain M, Kirkwood KS, Hirose K, Stewart L, Corvera CU| | PubMed
  6. Hyponatremia is associated with more severe biliary disease.
    Zobel MJ, Stewart L| | PubMed
  7. Increases in PYY and uncoupling of bone turnover are associated with loss of bone mass after gastric bypass surgery.
    Kim TY, Shoback DM, Black DM, Rogers SJ, Stewart L, Carter JT, Posselt AM, King NJ, Schafer AL| | PubMed
  8. Roux-en-Y gastric bypass is a safe and effective option that improves major Co-Morbidities associated with obesity in an older, veteran population.
    Lyo V, Schafer AL, Stewart L| | PubMed
  9. Changes in Lean Mass, Absolute and Relative Muscle Strength, and Physical Performance After Gastric Bypass Surgery.
    Alba DL, Wu L, Cawthon PM, Mulligan K, Lang T, Patel S, King NJ, Carter JT, Rogers SJ, Posselt AM, Stewart L, Shoback DM, Schafer AL| | PubMed
  10. Patient Co-Morbidity and Functional Status Influence the Occurrence of Hospital Acquired Conditions More Strongly than Hospital Factors.
    Moghadamyeghaneh Z, Stamos MJ, Stewart L| | PubMed
  11. Minimal-invasive approach to pancreatoduodenectomy is associated with lower early postoperative morbidity.
    Moghadamyeghaneh Z, Sleeman D, Stewart L| | PubMed
  12. Effects of Gastric Bypass Surgery on Bone Mass and Microarchitecture Occur Early and Particularly Impact Postmenopausal Women.
    Schafer AL, Kazakia GJ, Vittinghoff E, Stewart L, Rogers SJ, Kim TY, Carter JT, Posselt AM, Pasco C, Shoback DM, Black DM| | PubMed
  13. Bone Marrow Fat Changes After Gastric Bypass Surgery Are Associated With Loss of Bone Mass.
    Kim TY, Schwartz AV, Li X, Xu K, Black DM, Petrenko DM, Stewart L, Rogers SJ, Posselt AM, Carter JT, Shoback DM, Schafer AL| | PubMed
  14. Intestinal Calcium Absorption Decreases Dramatically After Gastric Bypass Surgery Despite Optimization of Vitamin D Status.
    Schafer AL, Weaver CM, Black DM, Wheeler AL, Chang H, Szefc GV, Stewart L, Rogers SJ, Carter JT, Posselt AM, Shoback DM, Sellmeyer DE| | PubMed
  15. Distractions during resident handoffs: incidence, sources, and influence on handoff quality and effectiveness.
    Anderson CE, Nicksa GA, Stewart L| | PubMed
  16. Innovative approach using interprofessional simulation to educate surgical residents in technical and nontechnical skills in high-risk clinical scenarios.
    Nicksa GA, Anderson C, Fidler R, Stewart L| | PubMed
  17. Importance of nutrition visits after gastric bypass surgery for American veterans, San Francisco, 2004-2010.
    Win AZ, Ceresa C, Schafer AL, Mak P, Stewart L| | PubMed
  18. Iatrogenic biliary injuries: identification, classification, and management.
    Stewart L| | PubMed
  19. The association between body mass index and severe biliary infections: a multivariate analysis.
    Stewart L, Griffiss JM, Jarvis GA, Way LW| | PubMed
  20. Laparoscopic treatment of liver tumours using a two-needle probe bipolar radiofrequency ablation device.
    Alemi F, Kwon E, Chiu J, Aoki H, Stewart L, Corvera CU| | PubMed
  21. Yield and performance characteristics of endoscopic ultrasound-guided fine needle aspiration for diagnosing upper GI tract stromal tumors.
    Watson RR, Binmoeller KF, Hamerski CM, Shergill AK, Shaw RE, Jaffee IM, Stewart L, Shah JN| | PubMed
  22. Bringing the skills laboratory home: an affordable webcam-based personal trainer for developing laparoscopic skills.
    Kobayashi SA, Jamshidi R, O'Sullivan P, Palmer B, Hirose S, Stewart L, Kim EH| | PubMed
  23. Hepatic surgery at a VA tertiary medical center: lessons learned.
    Alemi F, Kwon E, Freise C, Kang SM, Hirose R, Stewart L, Corvera CU| | PubMed
  24. Operative reports: form and function.
    Stewart L, Hunter JG, Wetter A, Chin B, Way LW| | PubMed
  25. The efficacy of medical team training: improved team performance and decreased operating room delays: a detailed analysis of 4863 cases.
    Wolf FA, Way LW, Stewart L| | PubMed
  26. Laparoscopic bile duct injuries: timing of surgical repair does not influence success rate. A multivariate analysis of factors influencing surgical outcomes.
    Stewart L, Way LW| | PubMed
  27. Neuroendocrine tumors of the ampulla of Vater: biological behavior and surgical management.
    Carter JT, Grenert JP, Rubenstein L, Stewart L, Way LW| | PubMed
  28. Tumors of the ampulla of vater: histopathologic classification and predictors of survival.
    Carter JT, Grenert JP, Rubenstein L, Stewart L, Way LW| | PubMed
  29. Implementation of a multidisciplinary treatment team for hepatocellular cancer at a Veterans Affairs Medical Center improves survival.
    Chang TT, Sawhney R, Monto A, Davoren JB, Kirkland JG, Stewart L, Corvera CU| | PubMed
  30. Elderly patients have more severe biliary infections: influence of complement-killing and induction of TNFalpha production.
    Stewart L, Grifiss JM, Jarvis GA, Way LW| | PubMed
  31. Bacteria entombed in the center of cholesterol gallstones induce fewer infectious manifestations than bacteria in the matrix of pigment stones.
    Stewart L, Griffiss JM, Jarvis GA, Way LW| | PubMed
  32. Endoscopic treatment of Boerhaave syndrome using a removable self-expandable plastic stent.
    Ghassemi KF, Rodriguez HJ, Vesga L, Stewart L, McQuaid KR, Shah JN| | PubMed
  33. Gallstones containing bacteria are biofilms: bacterial slime production and ability to form pigment solids determines infection severity and bacteremia.
    Stewart L, Griffiss JM, Jarvis GA, Way LW| | PubMed
  34. Biliary bacterial factors determine the path of gallstone formation.
    Stewart L, Grifiss JM, Jarvis GA, Way LW| | PubMed
  35. Bipolar pulse coagulation for resection of the cirrhotic liver.
    Corvera CU, Dada SA, Kirkland JG, Garrett RD, Way LW, Stewart L| | PubMed
  36. Local resection of ampullary tumors.
    Meneghetti AT, Safadi B, Stewart L, Way LW| | PubMed
  37. Spectrum of gallstone disease in the veterans population.
    Stewart L, Griffiss JM, Way LW| | PubMed
  38. Right hepatic artery injury associated with laparoscopic bile duct injury: incidence, mechanism, and consequences.
    Stewart L, Robinson TN, Lee CM, Liu K, Whang K, Way LW| | PubMed
  39. Causes and prevention of laparoscopic bile duct injuries: analysis of 252 cases from a human factors and cognitive psychology perspective.
    Way LW, Stewart L, Gantert W, Liu K, Lee CM, Whang K, Hunter JG| | PubMed
  40. Cholangitis: bacterial virulence factors that facilitate cholangiovenous reflux and tumor necrosis factor-alpha production.
    Stewart L, Oesterle AL, Grifiss JM, Jarvis GA, Way LW| | PubMed
  41. Pathogenesis of pigment gallstones in Western societies: the central role of bacteria.
    Stewart L, Oesterle AL, Erdan I, Griffiss JM, Way LW| | PubMed
  42. Gram-negative bacteria killed by complement are associated with more severe biliary infections and produce more tumor necrosis factor-alpha in sera.
    Stewart L, Oesterle AL, Griffiss JM, Jarvis GA, Aagaard B, Way LW| | PubMed
  43. Patch testing to cosmetics and topical drugs.
    Stewart LA| | PubMed