Siriraj Piyamaharajkarun Hospital, Bangkok – Thailand
About Assist. Prof. Pawinee Mahasittiwat
Asst. Prof. Dr. Pawinee Mahasittiwat is a Senior Consultant Radiation Oncologist with 22+ years of clinical and academic experience, recognised as one of the well-published Radiation Oncologist and Medical Oncologist specialist in Bangkok, Thailand. She is internationally trained at the University of Michigan and Washington University School of Medicine in the USA, and is widely consulted by international patients for advanced radiotherapy in lung cancer, rectal cancer, and stereotactic body radiation therapy (SBRT).
- 22+ years of clinical and academic experience in radiation oncology and medical oncology.
- MD from Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
- Residency in Radiation Oncology — Siriraj Hospital, Mahidol University.
- Fellowship at Department of Radiation Oncology, University of Michigan, Ann Arbor, USA.
- Fellowship at Department of Radiation Oncology, Washington University School of Medicine, St. Louis, USA; multiple peer-reviewed publications in J Radiat Oncol and Practical Radiation Oncology.
Qualifications & Credentials
Medical Degrees
- Doctor of Medicine (M.D.) — Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
Fellowships & Special Training
- Residency in Radiation Oncology — Faculty of Medicine, Siriraj Hospital, Mahidol University, Thailand
- Fellowship in Radiation Oncology — Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
- Fellowship in Radiation Oncology — Department of Radiation Oncology, Washington University School of Medicine, St. Louis, Missouri, USA
Certifications & Accreditations
- Thai Medical Council Registration
- Thai Board of Radiation Oncology
- Thai Association of Radiation Oncology — Member
Areas of Expertise
Major Conditions Treated
- Non-Small Cell Lung Cancer (NSCLC)
- Small Cell Lung Cancer
- Rectal Cancer & Colorectal Cancer
- Breast Cancer (Radiation)
- Head and Neck Cancers
- Cervical & Gynaecologic Cancers (Radiation)
- Prostate Cancer (Radiation)
- Brain Tumours & CNS Tumours
- Bone Metastases
- Advanced & Metastatic Cancers
- Solid Tumours Requiring Radiation
Sub-specialties
- Radiation Oncology: US-trained (University of Michigan, Washington University) expertise in 3D-CRT, IMRT, and stereotactic body radiation therapy — a trusted Radiation Oncologist in Bangkok for international patients seeking advanced radiotherapy in Thailand.
- Lung Cancer Radiotherapy: Published expert in PET-MTV-guided adaptive radiation therapy for NSCLC, including RTOG1106 collaboration.
- Rectal Cancer Radiotherapy: Published expert in preoperative short-course radiation therapy for rectal cancer.
Advanced Procedures & Treatments
- 3D Conformal Radiation Therapy (3DCRT)
- Intensity-Modulated Radiation Therapy (IMRT)
- Stereotactic Body Radiation Therapy (SBRT)
- Stereotactic Radiosurgery (SRS)
- Image-Guided Radiation Therapy (IGRT)
- PET/CT-Guided Adaptive Radiation Therapy
- Preoperative Short-Course Radiation Therapy (Rectal Cancer)
- Chemoradiotherapy Coordination
- Palliative Radiotherapy
- Multidisciplinary Tumour Board Coordination
List of Disease and Treatment for which Assist. Prof. Pawinee Mahasittiwat can be consulted
Professional Experience
Current Affiliation
- Siriraj Piyamaharajkarun Hospital, Bangkok — Senior Consultant Radiation Oncologist, Present
- Faculty of Medicine, Siriraj Hospital, Mahidol University — Assistant Professor / Senior Faculty, Division of Radiation Oncology, Present
Past Affiliations
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA — Research Fellow
- Department of Radiation Oncology, Washington University School of Medicine, St. Louis, USA — Research Fellow
- Siriraj Hospital, Mahidol University — Residency in Radiation Oncology
Academic & Research Roles
- Assistant Professor, Faculty of Medicine, Siriraj Hospital, Mahidol University
- Active researcher in PET-guided adaptive radiotherapy for NSCLC and short-course radiation for rectal cancer
- Co-author on RTOG1106 collaboration
Key Achievements
- 22+ years of clinical and academic experience
- Dual US fellowship training (University of Michigan + Washington University)
- Published in J Radiat Oncol (2013) and Practical Radiation Oncology (2016)
- Co-author with Feng-Ming Spring Kong on PET-guided NSCLC adaptive radiotherapy
Awards & Recognitions
National & International Awards
- Information not publicly available.
Professional Memberships
- Thai Medical Council
- Thai Association of Radiation Oncology
- American Society for Radiation Oncology (ASTRO) — Affiliated through training
Research & Publications
Published Papers (Selected)
- Mahasittiwat P, Yuan S, Xie C, Ritter T, Cao Y, Ten Haken RK, Kong FMS. "Metabolic Tumor Volume on PET Reduced More than Gross Tumor Volume on CT during Radiotherapy in Patients with Non-Small Cell Lung Cancer Treated with 3DCRT or SBRT." J Radiat Oncol. 2013 Jun;2(2):191-202. DOI: 10.1007/s13566-013-0091-x. PMID: 23795245.
- Mahasittiwat P, Weiner AA, Hunt SR, Mutch MG, Birnbaum EH, et al. "Preoperative short-course radiation therapy for rectal cancer provides excellent disease control and toxicity: Results from a single US institution." Practical Radiation Oncology. 2016.
- Wang J, Mahasittiwat P, Wong KK, Quint LE, Kong FM. "Natural growth and disease progression of non-small cell lung cancer evaluated with 18F-fluorodeoxyglucose PET/CT." Lung Cancer. 2012 Jul;78:51-56.
Ongoing Research & Clinical Interests
- PET-guided adaptive radiation therapy for NSCLC
- Short-course radiation therapy for rectal cancer
- Stereotactic body radiation therapy outcomes
Estimated Treatment Costs
| Procedure / Consultation | Estimated Cost (INR) | Estimated Cost (USD) |
|---|---|---|
| Radiation Oncology Consultation | ₹3,500 – ₹7,500 | $45 – $90 |
| 3D Conformal Radiation Therapy (Full Course) | ₹2,50,000 – ₹6,00,000 | $3,000 – $7,200 |
| IMRT (Full Course) | ₹4,00,000 – ₹9,00,000 | $4,800 – $10,800 |
| SBRT (Lung) | ₹4,50,000 – ₹10,00,000 | $5,400 – $12,000 |
| Stereotactic Radiosurgery (SRS) | ₹4,00,000 – ₹9,50,000 | $4,800 – $11,400 |
| Preoperative Short-Course Rectal Radiation | ₹2,00,000 – ₹5,00,000 | $2,400 – $6,000 |
| PET-CT Scan | ₹35,000 – ₹70,000 | $420 – $850 |
*Indicative estimates only. Actual costs subject to hospital pricing, case complexity, and insurance. Contact Cancer Rounds for a personalised quote.
Frequently Asked Questions
1. What advanced technologies does Asst. Prof. Dr. Pawinee Mahasittiwat use in Radiation Oncologist treatment?
Asst. Prof. Dr. Pawinee Mahasittiwat uses advanced 3D-CRT, IMRT, SBRT, and SRS radiotherapy platforms learned at the University of Michigan and Washington University, PET-guided adaptive radiation therapy techniques (RTOG1106 collaboration), short-course rectal radiotherapy protocols, and modern image-guided radiation therapy (IGRT) systems.
2. What conditions does Asst. Prof. Dr. Pawinee Mahasittiwat specialize in treating?
Asst. Prof. Dr. Pawinee Mahasittiwat specialises in non-small cell and small cell lung cancers, rectal and colorectal cancers, breast cancer (radiation), head and neck cancers, cervical and gynaecologic cancers (radiation), prostate cancer (radiation), brain tumours and CNS tumours, bone metastases, and advanced/metastatic cancers requiring radiation. She is regarded as one of the well-published Radiation Oncologist and Medical Oncologist specialist in Bangkok, Thailand.
3. How do I book an appointment with Asst. Prof. Dr. Pawinee Mahasittiwat?
Appointments with Asst. Prof. Dr. Pawinee Mahasittiwat can be booked directly through the Cancer Rounds website or by contacting their international patient department for priority scheduling.
4. Can international patients receive treatment from Asst. Prof. Dr. Pawinee Mahasittiwat?
Yes. Cancer Rounds provides full assistance for international patients seeking treatment from Asst. Prof. Dr. Pawinee Mahasittiwat, including medical visa invitation letters, airport transfers, and local accommodation coordination.
5. What support is available for international patients?
International patients benefit from a dedicated concierge service provided by Cancer Rounds, including language interpretation, financial counselling, and pre-travel virtual consultations to review imaging and medical records before arrival.
6. Does Asst. Prof. Dr. Pawinee Mahasittiwat offer second opinions for Radiation Oncologist cases?
Yes. Second opinion consultations can be arranged via Cancer Rounds for patients who wish to review their diagnosis or treatment plan with an expert Radiation Oncologist specialist in Bangkok, Thailand.
Bangkok Hospital - Thailand
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