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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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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Nodular lymphocyte predominant Hodgkin lymphoma: executive summary of the American radium society appropriate use criteria. Leuk Lymphoma. 2020 Dec 04; 1-14. Ballas LK, Metzger ML, Milgrom SA, Advani R, Bakst RL, Dabaja BS, Flowers CR, Ha CS, Hoppe BS, Mansur DB, Pinnix CC, Plastaras JP, Roberts KB, Smith SM, Terezakis SA, Constine LS. PMID: 33274673.
      View in: PubMed   Mentions:    Fields:    
    2. Targeting barriers to wider use of trimodality therapy in localized muscle invasive bladder cancer. Urol Oncol. 2020 Nov 02. PMID: 33153882.
      View in: PubMed   Mentions:    Fields:    
    3. Daily Ultrasound Imaging for Patients Undergoing Postprostatectomy Radiation Therapy Predicts and Ensures Dosimetric Endpoints. Adv Radiat Oncol. 2020 Nov-Dec; 5(6):1206-1212. Reilly M, Ariani R, Thio E, Roh D, Timoteo M, Cen S, Lei X, Ballas LK. PMID: 33376835.
      View in: PubMed   Mentions:
    4. Feasibility and Outcomes of Orthotopic Ileal Neobladder Reconstruction Following Pelvic Irradiation. Urology. 2021 Feb; 148:198-202. PMID: 32979377.
      View in: PubMed   Mentions:    Fields:    
    5. 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
    6. 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: 3     Fields:    Translation:HumansPHPublic Health
    7. 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.
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    8. Challenges in Reporting the Effect of Radiotherapy on Erectile Function. J Sex Med. 2020 06; 17(6):1053-1059. Nukala V, Incrocci L, Hunt AA, Ballas L, Koontz BF. PMID: 32312661.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. 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:    
    10. 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:    
    11. 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
    12. Investigating association of perineural invasion on prostate biopsy with Gleason score upgrading at prostatectomy: A multi-institutional analysis. Cancer Med. 2020 05; 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:    
    13. 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
    14. 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:    
    15. 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:    
    16. 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: 3     Fields:    Translation:Humans
    17. 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
    18. 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
    19. 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 06; 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:    
    20. 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.
      View in: PubMed   Mentions:
    21. 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: 5     Fields:    Translation:Humans
    22. 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: 2     Fields:    Translation:Humans
    23. 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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    24. 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
    25. 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
    26. 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
    27. 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
    28. 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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    29. 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
    30. Tolerance of Orthotopic Ileal Neobladders to Radiotherapy: A Multi-institutional Retrospective Study. Clin Genitourin Cancer. 2017 12; 15(6):711-716. PMID: 28558986.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    31. The Rationale for Post-Operative Radiation in Localized Bladder Cancer. Bladder Cancer. 2017 Jan 27; 3(1):19-30. PMID: 28149931.
      View in: PubMed   Mentions:
    32. ACR Appropriateness Criteria® Recurrent Hodgkin Lymphoma. Oncology (Williston Park). 2016 12 15; 30(12):1099-103, 1106-8. PMID: 27987203.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    33. ACR Appropriateness Criteria® Hodgkin Lymphoma-Favorable Prognosis Stage I and II. Am J Clin Oncol. 2016 12; 39(6):535-544. PMID: 27643717.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    34. What Medical, Urologic, and Radiation Oncologists Want from Molecular Imaging of Prostate Cancer. J Nucl Med. 2016 Oct; 57(Suppl 3):6S-12S. PMID: 27694176.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    35. Maternal and Fetal Outcomes After Therapy for Hodgkin or Non-Hodgkin Lymphoma Diagnosed During Pregnancy. JAMA Oncol. 2016 Aug 01; 2(8):1065-9. PMID: 27227654.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    36. 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. PMID: 25711194.
      View in: PubMed   Mentions: 32     Fields:    Translation:Humans
    37. Modern radiotherapeutic strategies in the management of lymphoma. Future Oncol. 2015; 11(6):1011-20. PMID: 25760980.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    38. Chromoplexy and hypoxic microenvironment drives prostate cancer. Lancet Oncol. 2014 Dec; 15(13):1419-1421. PMID: 25456359.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    39. 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. PMID: 22789491.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    40. Involved field radiation for Hodgkin's lymphoma: the actual dose to breasts in close proximity. Med Dosim. 2012; 37(4):374-82. PMID: 22513213.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    41. 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
    42. 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
    43. 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
    44. 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:    
    45. 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: 167     Fields:    Translation:HumansAnimalsCells
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