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Leslie Ballas, MD

Title(s)Associate Professor of Clinical Radiation Oncology
AddressNOR G350 1441 EASTLAKE AVE
Health Sciences Campus
Los Angeles CA 90033
Phone+1 323 865 3050
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    Dr. Leslie Ballas is an Associate Professor of Clinical Radiation Oncology at USC Norris Cancer Hospital. She received her undergraduate degree from Cornell University in New York, and her Medical Doctorate degree from the University of Michigan. She completed her internship in General Surgery at Weill-Cornell University in New York, and her residency in Radiation Oncology at Columbia Presbyterian Hospital in New York.

    After residency, Dr. Ballas spent time on the faculty at MD Anderson Cancer Center treating hematologic malignancies (leukemia, lymphoma and multiple myeloma). She has considerable experience treating this patient population. Because many lymphomas are highly curable, management of long term side effects from treatment is essential. She uses a variety of treatment techniques and modalities to minimize radiation dose to normal structures, thereby minimizing late effects from treatment. She also has a great deal of experience working with cutaneous lymphomas and the management of this category of lymphomas.She is the principal investigator on a multi-site clinical trial in the treatment of painful bone disease from multiple myeloma.

    Dr. Leslie Ballas also specializes in cancers of the genitourinary tract, including malignancies of the prostate, urinary bladder, testicle, and kidney. Her research has focused on improving quality of life for men with prostate cancer. She is involved in the development of cancer treatment clinical trials for patients with genitourinary cancers and has brought multiple genitourinary cooperative group studies to USC. Dr. Ballas’ interests include advanced technology integration into cancer therapeutics, including image-guide radiation therapy (IGRT), stereotactic body radiotherapy (SBRT), and intensity modulated radiotherapy (IMRT).

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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    1. Feasibility and outcomes of orthotopic ileal neobladder reconstruction following pelvic irradiation. Urology. 2020 Sep 23. Vassantachart A, Daneshmand S, Cai J, Miranda G, Ghodoussipour S, Schuckman AK, Djaladat H, Ballas L. PMID: 32979377.
      View in: PubMed   Mentions:    Fields:    
    2. Salvage Therapies After 18F-Fluciclovine Detected Prostate Cancer Recurrences. Clin Nucl Med. 2020 Sep; 45(9):668-671. Hwang L, Paluch J, Jadvar H, England JR, Desai B, Ballas LK. PMID: 32520496.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    3. Radiation Fractionation Schedules Published During the COVID-19 Pandemic: A Systematic Review of the Quality of Evidence and Recommendations for Future Development. Int J Radiat Oncol Biol Phys. 2020 Oct 01; 108(2):379-389. Thomson DJ, Yom SS, Saeed H, El Naqa I, Ballas L, Bentzen SM, Chao ST, Choudhury A, Coles CE, Dover L, Guadagnolo BA, Guckenberger M, Hoskin P, Jabbour SK, Katz MS, Mukherjee S, Rembielak A, Sebag-Montefiore D, Sher DJ, Terezakis SA, Thomas TV, Vogel J, Estes C. PMID: 32798063.
      View in: PubMed   Mentions:    Fields:    Translation:HumansPHPublic Health
    4. Acute Respiratory Events and Dosimetry of Total Body Irradiation Patients Using In Vivo Lung Dose Monitoring and Custom Lung Block Adaptation. Pract Radiat Oncol. 2020 Sep - Oct; 10(5):e397-e405. Jang JK, Reilly M, Yaghmour G, Rashid F, Ballas LK. PMID: 32315783.
      View in: PubMed   Mentions:    Fields:    
    5. Testicular Carcinoid Tumor in a Patient With Contralateral Classic Seminoma. Urology. 2020 Jul; 141:e32-e34. Ghoreifi A, Liang T, Ballas L, Sherrod A, Djaladat H. PMID: 32305555.
      View in: PubMed   Mentions:    Fields:    
    6. Prostate bed and organ-at-risk deformation: Prospective volumetric and dosimetric data from a phase II trial of stereotactic body radiotherapy after radical prostatectomy. Radiother Oncol. 2020 Jul; 148:44-50. Yoon S, Cao M, Aghdam N, Shabsovich D, Kahlon S, Ballas L, Collins S, Steinberg ML, Kishan AU. PMID: 32311600.
      View in: PubMed   Mentions:    Fields:    
    7. Appropriate Use Criteria for Imaging Evaluation of Biochemical Recurrence of Prostate Cancer After Definitive Primary Treatment. J Nucl Med. 2020 04; 61(4):552-562. Jadvar H, Ballas LK, Choyke PL, Fanti S, Gulley JL, Herrmann K, Hope TA, Klitzke AK, Oldan JD, Pomper MG, Rowe SP, Subramaniam RM, Taneja SS, Vargas HA, Ahuja S. PMID: 32238495.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    8. Investigating association of perineural invasion on prostate biopsy with Gleason score upgrading at prostatectomy: A multi-institutional analysis. Cancer Med. 2020 May; 9(10):3383-3389. Barsky AR, Kraus RD, Carmona R, Santos PMG, Li C, Schwartz LE, Ballas LK, Vapiwala N. PMID: 32187859.
      View in: PubMed   Mentions: 1     Fields:    
    9. Nodal Recurrence From Prostate Adenocarcinoma: Curable. Int J Radiat Oncol Biol Phys. 2020 02 01; 106(2):238-239. Ballas LK. PMID: 31928638.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    10. Chemoradiation for Management of Locally Recurrent or Residual Bladder Cancer: A Case Series and Review of the Literature. Clin Genitourin Cancer. 2020 08; 18(4):e473-e477. Ballas L, Wei O, Daneshmand S, Schuckman A, Djaladat H, Aron M, D'Souza A, Quinn D, Dorff TB. PMID: 32044240.
      View in: PubMed   Mentions:    Fields:    
    11. CAR-T Cell Therapy for Lymphoma: How Does Radiation Therapy Fit In? Pract Radiat Oncol. 2020 May - Jun; 10(3):e155-e158. Dreyfuss AD, Lariviere M, Ballas LK, Plastaras JP. PMID: 31574320.
      View in: PubMed   Mentions: 1     Fields:    
    12. Trimodality therapy for bladder cancer: modern management and future directions. Curr Opin Urol. 2019 05; 29(3):210-215. Pham A, Ballas LK. PMID: 30855374.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    13. 18F-Fluciclovine PET/CT Detection of Recurrent Prostate Carcinoma in Patients With Serum PSA = 1 ng/mL After Definitive Primary Treatment. Clin Nucl Med. 2019 Mar; 44(3):e128-e132. England JR, Paluch J, Ballas LK, Jadvar H. PMID: 30589673.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    14. Phase 1 Trial of SBRT to the Prostate Fossa After Prostatectomy. Int J Radiat Oncol Biol Phys. 2019 05 01; 104(1):50-60. Ballas LK, Luo C, Chung E, Kishan AU, Shuryak I, Quinn DI, Dorff T, Jhimlee S, Chiu R, Abreu A, Jennelle R, Aron M, Groshen S. PMID: 30605751.
      View in: PubMed   Mentions:    Fields:    Translation:HumansPHPublic HealthCTClinical Trials
    15. National Practice Patterns and Overall Survival After Adjuvant Radiotherapy Following Radical Cystectomy for Urothelial Bladder Cancer in the USA, 2004-2013. Eur Urol Oncol. 2020 Jun; 3(3):343-350. Bateni ZH, Pearce SM, Zainfeld D, Ballas L, Djaladat H, Schuckman AK, Daneshmand S. PMID: 31317867.
      View in: PubMed   Mentions: 1     Fields:    
    16. The Perineural Invasion Paradox: Is Perineural Invasion an Independent Prognostic Indicator of Biochemical Recurrence Risk in Patients With pT2N0R0 Prostate Cancer? A Multi-Institutional Study. Adv Radiat Oncol. 2019 Jan-Mar; 4(1):96-102. Kraus RD, Barsky A, Ji L, Garcia Santos PM, Cheng N, Groshen S, Vapiwala N, Ballas LK. PMID: 30706016.
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    17. Risk factors for loco-regional recurrence after radical cystectomy of muscle-invasive bladder cancer: A systematic-review and framework for adjuvant radiotherapy. Cancer Treat Rev. 2018 Nov; 70:88-97. Sargos P, Baumann BC, Eapen L, Christodouleas J, Bahl A, Murthy V, Efstathiou J, Fonteyne V, Ballas L, Zaghloul M, Roubaud G, Orré M, Larré S. PMID: 30125800.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    18. Using hospital medical record data to assess the accuracy of the SEER Los Angeles Cancer Surveillance Program for initial treatment of prostate cancer: a small pilot study. Cancer Causes Control. 2018 Sep; 29(9):815-821. Kraus RD, Hamilton AS, Carlos M, Ballas LK. PMID: 30022335.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    19. Novel Treatment Setup for Urethral Cancer: Use of the Prone Technique for Radiotherapy of the Penis. Case Rep Oncol. 2018 May-Aug; 11(2):268-275. Naser-Tavakolian A, Tran C, Timoteo M, Chiu R, Ballas L. PMID: 29867434.
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    20. Active Surveillance for Prostate Cancer: Are We Failing Latino Patients at a Large Safety Net Hospital? Clin Genitourin Cancer. 2018 08; 16(4):e719-e727. Ballas LK, Kraus R, Ji L, Groshen S, Stern MC, Gill I, Quinn DI, Chung E, Abreu A, Hamilton AS. PMID: 29483045.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    21. PSMA PET: Transformational Change in Prostate Cancer Management? J Nucl Med. 2018 02; 59(2):228-229. Jadvar H, Ballas LK. PMID: 29242400.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    22. Current Management Strategy for Penile Cancer and Future Directions. Curr Oncol Rep. 2017 Aug; 19(8):54. Dorff TB, Ballas LK, Schuckman AK. PMID: 28664471.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    23. Immunotherapy in urothelial cancer, part 2: adjuvant, neoadjuvant, and adjunctive treatment. Clin Adv Hematol Oncol. 2017 Jul; 15(7):543-551. Yu SS, Ballas LK, Skinner EC, Dorff TB, Sadeghi S, Quinn DI. PMID: 28749918.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansAnimals
    24. Prostate-Specific Antigen and Prostate-Specific Antigen Kinetics in Predicting 18F-Sodium Fluoride Positron Emission Tomography-Computed Tomography Positivity for First Bone Metastases in Patients with Biochemical Recurrence after Radical Prostatectomy. World J Nucl Med. 2017 Jul-Sep; 16(3):229-236. Yoon J, Ballas L, Desai B, Jadvar H. PMID: 28670183.
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    25. Immunotherapy in urothelial cancer, part 1: T-cell checkpoint inhibition in advanced or metastatic disease. Clin Adv Hematol Oncol. 2017 Jun; 15(6):466-477. Yu SS, Dorff TB, Ballas LK, Sadeghi S, Skinner EC, Quinn DI. PMID: 28749907.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansAnimalsCells
    26. Tolerance of Orthotopic Ileal Neobladders to Radiotherapy: A Multi-institutional Retrospective Study. Clin Genitourin Cancer. 2017 12; 15(6):711-716. Ballas L, Sargos P, Orré M, Bian SX, Daneshmand S, Eapen LJ. PMID: 28558986.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    27. The Rationale for Post-Operative Radiation in Localized Bladder Cancer. Bladder Cancer. 2017 Jan 27; 3(1):19-30. Baumann BC, Sargos P, Eapen LJ, Efstathiou JA, Choudhury A, Bahl A, Murthy V, Ballas LK, Fonteyne V, Richaud PM, Zaghloul MS, Christodouleas JP. PMID: 28149931.
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    28. ACR Appropriateness Criteria® Recurrent Hodgkin Lymphoma. Oncology (Williston Park). 2016 12 15; 30(12):1099-103, 1106-8. Winkfield KM, Advani RH, Ballas LK, Dabaja BS, Dhakal S, Flowers CR, Ha CS, Hoppe BS, Mansur DB, Mendenhall NP, Metzger ML, Plastaras JP, Roberts KB, Shapiro R, Smith SM, Terezakis SA, Younes A, Constine LS. PMID: 27987203.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    29. ACR Appropriateness Criteria® Hodgkin Lymphoma-Favorable Prognosis Stage I and II. Am J Clin Oncol. 2016 12; 39(6):535-544. Dhakal S, Advani R, Ballas LK, Dabaja BS, Flowers CR, Ha CS, Hoppe BS, Mendenhall NP, Metzger ML, Plastaras JP, Roberts KB, Shapiro R, Smith SM, Terezakis SA, Winkfield KM, Younes A, Constine LS. PMID: 27643717.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    30. What Medical, Urologic, and Radiation Oncologists Want from Molecular Imaging of Prostate Cancer. J Nucl Med. 2016 Oct; 57(Suppl 3):6S-12S. Ballas LK, de Castro Abreu AL, Quinn DI. PMID: 27694176.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    31. Maternal and Fetal Outcomes After Therapy for Hodgkin or Non-Hodgkin Lymphoma Diagnosed During Pregnancy. JAMA Oncol. 2016 Aug 01; 2(8):1065-9. Pinnix CC, Osborne EM, Chihara D, Lai P, Zhou S, Ramirez MM, Oki Y, Hagemeister FB, Rodriguez AM, Samaniego F, Fowler N, Romaguera JE, Turturro F, Fayad L, Westin JR, Nastoupil L, Neelapu SS, Cheah CY, Dabaja BS, Milgrom SA, Smith GL, Horace P, Milbourne A, Wogan CF, Ballas L, Fanale MA. PMID: 27227654.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    32. Radical Prostatectomy or External Beam Radiation Therapy vs No Local Therapy for Survival Benefit in Metastatic Prostate Cancer: A SEER-Medicare Analysis. J Urol. 2015 Aug; 194(2):378-85. Satkunasivam R, Kim AE, Desai M, Nguyen MM, Quinn DI, Ballas L, Lewinger JP, Stern MC, Hamilton AS, Aron M, Gill IS. PMID: 25711194.
      View in: PubMed   Mentions: 32     Fields:    Translation:Humans
    33. Modern radiotherapeutic strategies in the management of lymphoma. Future Oncol. 2015; 11(6):1011-20. Ballas L. PMID: 25760980.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    34. Chromoplexy and hypoxic microenvironment drives prostate cancer. Lancet Oncol. 2014 Dec; 15(13):1419-1421. Ballas LK, Hu BR, Quinn DI. PMID: 25456359.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    35. Emergence of integrated urology-radiation oncology practices in the State of Texas. Int J Radiat Oncol Biol Phys. 2012 Sep 01; 84(1):15-9. Jhaveri PM, Sun Z, Ballas L, Followill DS, Hoffman KE, Jiang J, Smith BD. PMID: 22789491.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    36. Involved field radiation for Hodgkin's lymphoma: the actual dose to breasts in close proximity. Med Dosim. 2012; 37(4):374-82. Dabaja B, Wang Z, Stovall M, Baker JS, Smith SA, Khan M, Ballas L, Salehpour MR. PMID: 22513213.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    37. Cytogenetic profile of patients with acute myeloid leukemia and central nervous system disease. Cancer. 2012 Jan 01; 118(1):112-7. Shihadeh F, Reed V, Faderl S, Medeiros LJ, Mazloom A, Hadziahmetovic M, Kantarjian H, Allen P, Ballas L, Pierce S, Dabaja B. PMID: 21692072.
      View in: PubMed   Mentions: 19     Fields:    Translation:Humans
    38. Treatment interruption and discontinuation in radiotherapy for rectal cancer. Cancer Invest. 2010 Mar; 28(3):289-94. Lebwohl B, Ballas L, Cao Y, Chan G, Grossman R, Sherr DL, Woodhouse S, Neugut AI. PMID: 20073579.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    39. Advances in radiobiological studies using a microbeam. J Radiat Res. 2009 Mar; 50 Suppl A:A7-A12. Hei TK, Ballas LK, Brenner DJ, Geard CR. PMID: 19346688.
      View in: PubMed   Mentions: 11     Fields:    Translation:HumansAnimals
    40. Radiation therapy facilities in the United States. Int J Radiat Oncol Biol Phys. 2006 Nov 15; 66(4):1204-11. Ballas LK, Elkin EB, Schrag D, Minsky BD, Bach PB. PMID: 17145535.
      View in: PubMed   Mentions: 16     Fields:    
    41. Amelioration of vascular dysfunctions in diabetic rats by an oral PKC beta inhibitor. Science. 1996 May 03; 272(5262):728-31. Ishii H, Jirousek MR, Koya D, Takagi C, Xia P, Clermont A, Bursell SE, Kern TS, Ballas LM, Heath WF, Stramm LE, Feener EP, King GL. PMID: 8614835.
      View in: PubMed   Mentions: 166     Fields:    Translation:HumansAnimalsCells
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