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Ryan C. Fields, MD

Professor, Surgery
Division of General Surgery
Chief, Section of Surgical Oncology

Specialty Areas

Melanoma
Hepatobiliary Cancer
Sarcoma
Gastrointestinal Oncology
Liver Surgery
Pancreatic Cancer

Hospital Affiliations

Barnes-Jewish West County Hospital
Barnes-Jewish Hospital

Areas of Clinical Interest

Dr Fields specializes in surgical oncology, the surgical treatment of cancer including  tumors of the upper gastrointestinal tract, pancreatic cancer, liver tumors, primary liver tumor, metastatic liver tumor, gastric cancer, stomach cancer, GI stromal tumor, GIST, small bowel tumor,  neuroendocrine tumors, carcinoid tumors.  He has advanced training in surgical treatment of skin cancer, melanoma, Merkel cell carcinoma, basal cell, squamous cell cancer, sarcoma,  retroperitoneal sarcoma.  Also he treats patients with benign hepatobiliary disease, pancreatic conditions.  Dr. Fields also performs  isolated limb Infusion (ILI) and isolated limb perfusion (ILP) for advanced extremity melanoma and other skin/soft tissue malignancies.

  • Location(s)
  • Education
  • Publication & Research

Location(s)

Location(s)

Center for Advanced Medicine
Gastrointestinal Center

4921 Parkview Place
St. Louis, MO 63110

Suite: C
Floor: 8
Office Phone: 314-286-1694
Fax: 314-222-6255

Barnes-Jewish West County Hospital 
Siteman Cancer Center
Medical Building Two

10 Barnes West Drive
Creve Coeur, MO 63141
Phone: 314-747-7222

Office Phone: 314-286-1694

Education

Education

Fellowship (Research): Surgery and Immunology, Washington University School of Medicine, St. Louis, MO 2006
Medical School : Duke University School of Medicine, Durham, NC, 2003
Residency: General Surgery, Barnes-Jewish Hospital, St. Louis MO 2008
Chief Resident (Administrative): General Surgery, Barnes-Jewish Hospital, St. Louis MO 2009
Fellowship: Surgical Oncology, Memorial Sloan-Kettering Cancer Center, New York, NY 2011

Publication & Research

Publication & Research

Precision delivery of RAS-inhibiting siRNA to KRAS driven cancer via peptide-based nanoparticles.
Strand MS, Krasnick BA, Pan H, Zhang X, Bi Y, Brooks C, Wetzel C, Sankpal N, Fleming T, Goedegebuure SP, DeNardo DG, Gillanders WE, Hawkins WG, Wickline SA, Fields RC
Oncotarget. 2019 Jul 30; 10(46)4761-4775. doi: 10.18632/oncotarget.27109.

PMID:
    31413817
    [PubMed]
Related citations


Interaction of race and pathology for neuroendocrine tumors: Epidemiology, natural history, or racial disparity?
DePalo DK, Lee RM, Lopez-Aguiar AG, Gamboa AC, Rocha F, Poultsides G, Dillhoff M, Fields RC, Idrees K, Nathan H, Abbott D, Maithel SK, Russell MC, other members of the United States Neuroendocrine Tumor Study Group.
J Surg Oncol. 2019 Aug 6; doi: 10.1002/jso.25662.

PMID:
    31385621
    [PubMed - as supplied by publisher]
Related citations


Lung Surveillance Strategy for High-Grade Soft Tissue Sarcomas: Chest X-Ray or CT Scan?
Gamboa AC, Ethun CG, Switchenko JM, Lipscomb J, Poultsides GA, Grignol V, Howard JH, Gamblin TC, Roggin KK, Votanopoulos K, Fields RC, Maithel SK, Delman KA, Cardona K
J Am Coll Surg. 2019 Aug 1; pii: S1072-7515(19)30446-6. doi: 10.1016/j.jamcollsurg.2019.07.010.

PMID:
    31377411
    [PubMed - as supplied by publisher]
Related citations


A 22-year experience with pancreatic resection for metastatic renal cell carcinoma.
Anderson B, Williams GA, Sanford DE, Lu J, Dageforde LA, Hammill CW, Fields RC, Hawkins WG, Strasberg SM, Doyle MB, Chapman WC, Khan AS
HPB (Oxford). 2019 Jul 23; pii: S1365-182X(19)30569-6. doi: 10.1016/j.hpb.2019.05.019.

PMID:
    31345661
    [PubMed - as supplied by publisher]
Related citations


Assessing the Role of Neoadjuvant Chemotherapy in Primary High-Risk Truncal/Extremity Soft Tissue Sarcomas: An Analysis of the Multi-institutional U.S. Sarcoma Collaborative.
Zaidi MY, Ethun CG, Tran TB, Poultsides G, Grignol VP, Howard JH, Bedi M, Mogal H, Tseng J, Roggin KK, Chouliaras K, Votanopoulos K, Krasnick B, Fields RC, Oskouei S, Reimer N, Monson D, Maithel SK, Cardona K
Ann Surg Oncol. 2019 Jul 24; doi: 10.1245/s10434-019-07639-7.

PMID:
    31342400
    [PubMed - as supplied by publisher]
Related citations


Association of preoperative monocyte-to-lymphocyte and neutrophil-to-lymphocyte ratio with recurrence-free and overall survival after resection of pancreatic neuroendocrine tumors (US-NETSG).
Panni RZ, Lopez-Aguiar AG, Liu J, Poultsides GA, Rocha FG, Hawkins WG, Strasberg SM, Trikalinos NA, Maithel S, Fields RC, and other members of US-NETSG.
J Surg Oncol. 2019 Sep; 120(4)632-638. doi: 10.1002/jso.25629.

PMID:
    31339198
    [PubMed - in process]
Related citations


Utility of Intraoperative Margin Assessment by Frozen Section in Gastric Cancer.
Squires MH 3rd, Maithel SK, Fields RC
Ann Surg Oncol. 2019 Jul 17; doi: 10.1245/s10434-019-07571-w.

PMID:
    31317379
    [PubMed - as supplied by publisher]
Related citations


Survival Outcomes Associated With Clinical and Pathological Response Following Neoadjuvant FOLFIRINOX or Gemcitabine/Nab-Paclitaxel Chemotherapy in Resected Pancreatic Cancer.
Macedo FI, Ryon E, Maithel SK, Lee RM, Kooby DA, Fields RC, Hawkins WG, Williams G, Maduekwe U, Kim HJ, Ahmad SA, Patel SH, Abbott DE, Schwartz P, Weber SM, Scoggins CR, Martin RCG, Dudeja V, Franceschi D, Livingstone AS, Merchant NB
Ann Surg. 2019 Sep; 270(3)400-413. doi: 10.1097/SLA.0000000000003468.

PMID:
    31283563
    [PubMed - in process]
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A Novel Validated Recurrence Risk Score to Guide a Pragmatic Surveillance Strategy After Resection of Pancreatic Neuroendocrine Tumors: An International Study of 1006 Patients.
Zaidi MY, Lopez-Aguiar AG, Switchenko JM, Lipscomb J, Andreasi V, Partelli S, Gamboa AC, Lee RM, Poultsides GA, Dillhoff M, Rocha FG, Idrees K, Cho CS, Weber SM, Fields RC, Staley CA 3rd, Falconi M, Maithel SK
Ann Surg. 2019 Sep; 270(3)422-433. doi: 10.1097/SLA.0000000000003461.

PMID:
    31283562
    [PubMed - in process]
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Predictors of Disease-Free and Overall Survival in Retroperitoneal Sarcomas: A Modern 16-Year Multi-Institutional Study from the United States Sarcoma Collaboration (USSC).
Schwartz PB, Vande Walle K, Winslow ER, Ethun CG, Tran TB, Poultsides G, Tseng J, Roggin K, Grignol V, Howard JH, Krasnick BA, Fields RC, Mogal H, Clarke CN, Senehi R, Votanopoulos K, Cardona K, Abbott DE
Sarcoma. 2019; 20195395131. doi: 10.1155/2019/5395131.

PMID:
    31281208
    [PubMed]
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Features of synchronous versus metachronous metastasectomy in adrenal cortical carcinoma: Analysis from the US adrenocortical carcinoma database.
Prendergast KM, Smith PM, Tran TB, Postlewait LM, Maithel SK, Prescott JD, Pawlik TM, Wang TS, Glenn J, Hatzaras I, Shenoy R, Phay JE, Shirley LA, Fields RC, Jin LX, Weber SM, Salem A, Sicklick JK, Gad S, Yopp AC, Mansour JC, Duh QY, Seiser N, Votanopoulos KI, Levine EA, Poultsides GA, Solórzano CC, Kiernan CM
Surgery. 2019 Jul 1; pii: S0039-6060(19)30286-7. doi: 10.1016/j.surg.2019.05.024.

PMID:
    31272813
    [PubMed - as supplied by publisher]
Related citations


Agonism of CD11b reprograms innate immunity to sensitize pancreatic cancer to immunotherapies.
Panni RZ, Herndon JM, Zuo C, Hegde S, Hogg GD, Knolhoff BL, Breden MA, Li X, Krisnawan VE, Khan SQ, Schwarz JK, Rogers BE, Fields RC, Hawkins WG, Gupta V, DeNardo DG
Sci Transl Med. 2019 Jul 3; 11(499)pii: eaau9240. doi: 10.1126/scitranslmed.aau9240.

PMID:
    31270275
    [PubMed - in process]
Related citations


Recurrence patterns after resection of retroperitoneal sarcomas: An eight-institution study from the US Sarcoma Collaborative.
Chouliaras K, Senehi R, Ethun CG, Poultsides G, Tran T, Grignol V, Gamblin TC, Roggin KK, Tseng J, Fields RC, Weber SM, Russell GB, Levine EA, Cardona K, Votanopoulos K
J Surg Oncol. 2019 Sep; 120(3)340-347. doi: 10.1002/jso.25606.

PMID:
    31246290
    [PubMed - indexed for MEDLINE]
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Cross Validation of the Monoclonal Antibody Das-1 in Identification of High-Risk Mucinous Pancreatic Cystic Lesions.
Das KK, Geng X, Brown JW, Morales-Oyarvide V, Huynh T, Pergolini I, Pitman MB, Ferrone C, Al Efishat M, Haviland D, Thompson E, Wolfgang C, Lennon AM, Allen P, Lillemoe KD, Fields RC, Hawkins WG, Liu J, Castillo CF, Das KM, Mino-Kenudson M
Gastroenterology. 2019 Sep; 157(3)720-730.e2. doi: 10.1053/j.gastro.2019.05.014.

PMID:
    31175863
    [PubMed - in process]
Related citations


The impact of unplanned excisions of truncal/extremity soft tissue sarcomas: A multi-institutional propensity score analysis from the US Sarcoma Collaborative.
Zaidi MY, Ethun CG, Liu Y, Poultsides G, Howard JH, Mogal H, Tseng J, Votanopoulos K, Fields RC, Cardona K
J Surg Oncol. 2019 Sep; 120(3)332-339. doi: 10.1002/jso.25521.

PMID:
    31172536
    [PubMed - indexed for MEDLINE]
Related citations


The role of radiation therapy and margin width in localized soft-tissue sarcoma: Analysis from the US Sarcoma Collaborative.
Gannon NP, King DM, Ethun CG, Charlson J, Tran TB, Poultsides G, Grignol V, Howard JH, Tseng J, Roggin KK, Votanopoulos K, Krasnick B, Fields RC, Cardona K, Bedi M
J Surg Oncol. 2019 Sep; 120(3)325-331. doi: 10.1002/jso.25522.

PMID:
    31172531
    [PubMed - indexed for MEDLINE]
Related citations


Development of resistance to FAK inhibition in pancreatic cancer is linked to stromal depletion.
Jiang H, Liu X, Knolhoff BL, Hegde S, Lee KB, Jiang H, Fields RC, Pachter JA, Lim KH, DeNardo DG
Gut. 2019 May 10; pii: gutjnl-2018-317424. doi: 10.1136/gutjnl-2018-317424.

PMID:
    31076405
    [PubMed - as supplied by publisher]
Related citations


The conundrum of < 2-cm pancreatic neuroendocrine tumors: A preoperative risk score to predict lymph node metastases and guide surgical management.
Lopez-Aguiar AG, Ethun CG, Zaidi MY, Rocha FG, Poultsides GA, Dillhoff M, Fields RC, Idrees K, Cho CS, Abbott DE, Cardona K, Maithel SK
Surgery. 2019 Jul; 166(1)15-21. doi: 10.1016/j.surg.2019.03.008.

PMID:
    31072670
    [PubMed - in process]
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Defining the Role of Lymphadenectomy for Pancreatic Neuroendocrine Tumors: An Eight-Institution Study of 695 Patients from the US Neuroendocrine Tumor Study Group.
Lopez-Aguiar AG, Zaidi MY, Beal EW, Dillhoff M, Cannon JGD, Poultsides GA, Kanji ZS, Rocha FG, Marincola Smith P, Idrees K, Beems M, Cho CS, Fisher AV, Weber SM, Krasnick BA, Fields RC, Cardona K, Maithel SK
Ann Surg Oncol. 2019 Aug; 26(8)2517-2524. doi: 10.1245/s10434-019-07367-y.

PMID:
    31004295
    [PubMed - in process]
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Cutaneous Melanoma, Version 2.2019, NCCN Clinical Practice Guidelines in Oncology.
Coit DG, Thompson JA, Albertini MR, Barker C, Carson WE, Contreras C, Daniels GA, DiMaio D, Fields RC, Fleming MD, Freeman M, Galan A, Gastman B, Guild V, Johnson D, Joseph RW, Lange JR, Nath S, Olszanski AJ, Ott P, Gupta AP, Ross MI, Salama AK, Skitzki J, Sosman J, Swetter SM, Tanabe KK, Wuthrick E, McMillian NR, Engh AM
J Natl Compr Canc Netw. 2019 Apr 1; 17(4)367-402. doi: 10.6004/jnccn.2019.0018.

PMID:
    30959471
    [PubMed - in process]
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