Chawalit Lertbutsayanukul.jpg

Prof. Dr Chawalit Lertbutsayanukul


  • Radiation Oncology

Sub Specialty


B2 Floor (EAST Lift)

Treatments And Services

  • • Intensity-Modulated Radiotherapy (IMRT)
  • • Volumetric Modulated Arc Therapy (VMAT)
  • • Stereotactic Radiotherapy (SRT)
  • • Head Cancer
  • • Neck Cancer
  • • Breast Cancer
  • • Lung Cancer
  • • Esophageal Cancer
  • • Gastroesophageal Cancer
  • • Pancreaticobiliary Cancer
  • • Soft Tissue Sarcoma
  • • Radiation Oncology


Head of Division of Radiation Oncology
Department of Radiology, Faculty of Medicine, Chulalongkorn University

Head of Program Bachelor of Science Program in Radiological Technology
Faculty of Medicine in co-operative with Faculty of Allied Health, Chulalongkorn University

Editor in chief
Journal of Thai Association of Radiation Oncology

Graduate Diploma in Clinical Sciences (Radiology)
Chulalongkorn University

Doctor of Medicine (Honors)
Chulalongkorn University


Thai Board of Radiation Oncology

Research And Publications

Hypothyroidism after radiotherapy for nasopharyngeal carcinoma. Prayongrat P, Lertbutsayanukul C. Ann Nasopharynx Cancer 2020;4:3 |

Long-term patient-rated cosmetic and satisfactory outcomes of early breast cancer treated with conventional versus hypofractionated breast irradiation with simultaneous integrated boost technique. Lertbutsayanukul C, Pitak M, Ajchariyasongkram N, Rakkiet N, Seuree F, Prayongrat A. Breast J. 2020 Jul 9. doi: 10.1111/tbj.13960.

Comparison between the seventh and eighth edition of the AJCC/UICC staging system for nasopharyngeal cancer integrated with pretreatment plasma Epstein-Barr virus DNA level in a non-Chinese population: secondary analysis from a prospective randomized trial. Kitpanit S, Jittapiromsak N, Sriyook A, Prayongrat A, Kannarunimit D, Chakkabat C, Lertbutsayanukul C. Jpn J Clin Oncol. 2019 doi: 10.1093/jjco/hyz109. 

Validation of the Scored Patient-Generated Subjective Global Assessment (PG-SGA) in Thai Setting and Association with Nutritional Parameters in Cancer Patients. Nitichai N, Angkatavanich J, Somlaw N, Voravud N, Lertbutsayanukul C.Asian Pac J Cancer Prev. 2019;20:1249-1255. doi: 10.31557/APJCP.2019.20.4.1249.

Prognostic Value of Plasma EBV DNA for Nasopharyngeal Cancer Patients during Treatment with Intensity-modulated Radiation Therapy and Concurrent Chemotherapy. Lertbutsayanukul C, Kannarunimit D, Prayongrat A, Chakkabat C, Kitpanit S, Hansasuta P.Radiol Oncol. 2018 Apr 28;52(2):195-203. doi: 10.2478/raon-2018-0016. 

Validation of previously reported predictors for radiation-induced hypothyroidism in nasopharyngeal cancer patients treated with intensity-modulated radiation therapy, a post hoc analysis from a Phase III randomized trial. Lertbutsayanukul C, Kitpanit S, Prayongrat A, Kannarunimit D, Netsawang B, Chakkabat C.J Radiat Res. 2018 Jul 1;59(4):446-455. doi: 10.1093/jrr/rry036.

Optimal plasma pretreatment EBV DNA cut-off point for nasopharyngeal cancer patients treated with intensity modulated radiation therapy. Lertbutsayanukul C, Kannarunimit D, Netsawang B, Kitpanit S, Chakkabat C, Hansasuta P, Prayongrat A.Jpn J Clin Oncol. 2018 May 1;48(5):467-475. doi: 10.1093/jjco/hyy027.

A randomized phase III study between sequential versus simultaneous integrated boost intensity-modulated radiation therapy in nasopharyngeal carcinoma. Lertbutsayanukul C, Prayongrat A, Kannarunimit D, Chakkabat C, Netsawang B, Kitpanit S.Strahlenther Onkol. 2018;194:375-385. doi: 10.1007/s00066-017-1251-5. 

High dose radiation with chemotherapy followed by salvage esophagectomy among patients with locally advanced esophageal squamous cell carcinoma. Lertbutsayanukul C, Tharavej C, Klaikeaw N, Prayongrat A, Lowanitchai C, Sriuranpong V.Thorac Cancer. 2017;8:219-228. doi: 10.1111/1759-7714.12427.

Prevalence and significance of plasma Epstein-Barr Virus DNA level in nasopharyngeal carcinoma. Prayongrat A, Chakkabat C, Kannarunimit D, Hansasuta P, Lertbutsayanukul C.
J Radiat Res. 2017 Jul 1;58(4):509-516. doi: 10.1093/jrr/rrw128.

A randomized phase II/III study of adverse events between sequential (SEQ) versus simultaneous integrated boost (SIB) intensity modulated radiation therapy (IMRT) in nasopharyngeal carcinoma; preliminary result on acute adverse events. Songthong AP, Kannarunimit D, Chakkabat C, Lertbutsayanukul C. Radiat Oncol. 2015;10:166. doi: 10.1186/s13014-015-0472-y.

Efficacy of intensity-modulated radiotherapy with concurrent carboplatin in nasopharyngeal carcinoma.
Songthong A, Chakkabat C, Kannarunimit D, Lertbutsayanukul C.
Radiol Oncol. 2015; 25;49(2):155-62. doi: 10.2478/raon-2014-0044

Management of intracranial germ cell tumors at the King Chulalongkorn Memorial Hospital.
Raiyawa T, Khorprasert C, Lertbutsayanukul C, Seksarn P, Sosothikul D, Amornfa J, Shotelersuk K.
J Med Assoc Thai. 2012;95:1327-34.

Skin toxicity and cosmesis after hypofractionated whole breast irradiation for early breast cancer.
Saksornchai K, Rojpornpradit P, Shotelersak K, Lertbutsayanukul C, Chakkabat C, Raiyawa T.
J Med Assoc Thai. 2012;95:229-40.

Management of endometrial cancer in Asia: consensus statement from the Asian Oncology Summit 2009.
Tangjitgamol S, Anderson BO, See HT, Lertbutsayanukul C, Sirisabya N, Manchana T, Ilancheran A, Lee KM, Lim SE, Chia YN, Domingo E, Kim YT, Lai CH, Dali AZ, Supakapongkul W, Wilailak S, Tay EH, Kavanagh J; Asian Oncology Summit. Lancet Oncol. 2009 ;10:1119-27. doi: 10.1016/S1470-2045(09)70290-6.

Capecitabine-based chemoradiotherapy with adjuvant capecitabine for locally advanced squamous carcinoma of the uterine cervix: phase II results.
Domingo E, Lorvidhaya V, de Los Reyes R, Syortin T, Kamnerdsupaphon P, Lertbutsayanukul C, Vito-Cruz E, Tharavichitkul E, Jin K, Yoshihara M, Cupino N, Lertsanguansinchai P. Oncologist. 2009 ;14:828-34. doi: 10.1634/theoncologist.2009-0041

Late effects and cosmetic results of simultaneous integrated boost versus sequential boost after conventional irradiation in breast-conserving therapy; out come of 7 months follow-up. Raiyawa T, Lertbutsayanukul C, Rojpornpradit P. J Med Assoc Thai. 2009;92:390-7.

Dosimetric study of inverse-planed intensity modulated, forward-planned intensity modulated and conventional tangential techniques in breast conserving radiotherapy. Rongsriyam K, Rojpornpradit P, Lertbutsayanukul C, Sanghangthum T, Oonsiri S. J Med Assoc Thai. 2008;91:1571-82.

A two-year experience of implementing 3 dimensional radiation therapy and intensity-modulated radiation therapy for 925 patients in King Chulalongkorn Memorial Hospital. Lertbutsayanukul C, Shotelersuk K, Khorprasert C, Sanghangthum T, Oonsiri S, Ayuthaya II, Jumpangern C, Suriyapee S, Rojpornpradit P. J Med Assoc Thai.2008;91:215-24.

Adjuvant therapy for early-stage endometrial cancer: a review.
Tangjitgamol S, Manusirivithaya S, Lertbutsayanukul C.
Int J Gynecol Cancer. 2007;17:949-56. doi: 10.1111/j.1525-1438.2007.00860.x. Epub 2007 Feb 14.

Intensity-modulated radiation therapy in head-and-neck cancer, first report in Thailand. Lertbutsayanukul C, Khorprasert C, Shotelersuk K, Jumpangern C, Sanghangthum T, Oonsiri S, Ayuthaya II, Suriyapee S, Wadwongtham W, Supanakorn S, Kerekanjanarong V, Rojpornpradit P.
J Med Assoc Thai. 2006;89:2068-76

Preoperative capecitabine with pelvic radiotherapy for locally advanced rectal cancer (phase I trial). Veerasarn V, Phromratanapongse P, Lorvidhaya V, Lertsanguansinchai P, Lertbutsayanukul C, Panichevaluk A, Boonnuch W, Chinswangwatanakul V, Lohsiriwat D, Rojanasakul A, Thavichaigarn P, Jivapaisarnpong P. J Med Assoc Thai. 2006 ;89:1874-84.

Measurements of patient's setup variation in intensity-modulated radiation therapy of head and neck cancer using electronic portal imaging device.
Naiyanet N, Oonsiri S, Lertbutsayanukul C, Suriyapee S.
Biomed Imaging Interv J. 2007 ;3:e30. doi: 10.2349/biij.3.1.e30.

Pattern of local-regional recurrence in patient with early breast cancer after mastectomy: an analysis of 357 cases at King Chulalongkorn Memorial Hospital. Lertsanguansinchai P, Lertbutsayanukul C, Chatamra K, Shotelersuk K, Voravud N, Khorprasert C.
J Med Assoc Thai. 2004;87 Suppl 2:S168-74.

Phase III randomized trial comparing LDR and HDR brachytherapy in treatment of cervical carcinoma. Lertsanguansinchai P, Lertbutsayanukul C, Shotelersuk K, Khorprasert C, Rojpornpradit P, Chottetanaprasith T, Srisuthep A, Suriyapee S, Jumpangern C, Tresukosol D, Charoonsantikul C.
Int J Radiat Oncol Biol Phys. 2004;59:1424-31. doi: 10.1016/j.ijrobp.2004.01.034.

Intracranial germ cell tumors: experience in King Chulalongkorn Memorial Hospital. Shotelersuk K, Rojpornpradit P, Chottetanaprasit T, Lertbutsayanukul C, Lertsanguansinchai P, Khorprasert C, Asavametha N, Suriyapee S, Jumpangern C. J Med Assoc Thai. 2003;86:603-11.

Estrogen and progesterone receptors status in Thai female breast cancer patients: an analysis of 399 cases at King Chulalongkorn Memorial Hospital.
Lertsanguansinchai P, Chottetanaprasith T, Chatamra K, Sampatanukul P, Wannakrairot P, Rojpornpradit P, Shotelersuk K, Lertbutsayanukul C, Boonjunwetwat D, Vajragupta L. J Med Assoc Thai. 2002;85 Suppl 1:S193-202.

Results of radiation therapy in stage 1B cervical carcinoma at King Chulalongkorn Memorial Hospital: fifteen-year experience.
Lertbutsayanukul C, Lertsanguansinchai P, Shotelersuk K, Khorprasert C, Rojpornpradit P, Asavametha N, Pataramontree J, Suriyapee S, Tresukosol D, Termrungruanglert W. J Med Assoc Thai. 2001 Jun;84 Suppl 1:S216-27.

Dose measurement of total scalp radiation treatment using lateral photon-electron technique. Lertbutsayanukul C, Jumpangern C, Charoonsantikul C, Sanghangthum T, Suriyapee S. Asean Journal of Radiology 2005; 11(2):67-74

Survival analysis of stage I-IIIA breast cancer patients treated with mastectomy; 11-year experience in King Chulalongkorn Memorial Hospital. Lertbutsayanukul C, Lertsanguansinchai P, Shotelersuk K, Khorprasert C, Suriyapee S, Sangsubhan C, Navicharern P. Asean Journal of Radiology 2005; 11(2): 85-96