Sovandara Heng

Dr. HENG SOVANDARA, specialized in Urology and General Surgery. He obtained his medical degree at the University of Health Sciences in 2009. He completed the Master degree training in General Surgery at the University of Health Sciences from 2009 to 2013. He then continued a 2-year fellowship training in Urology and Renal Transplants with the success of a University Diploma (DU) in microsurgery at the University Claude Bernard Lyon I, Lyon, France (2013-2015). After his return to Cambodia, he has frequently been active in different scientific meeting nationally and internationally and participated in practical training (Hands on short course) of laparoscopy, endoscopy and PCNL in India, Hong Kong, Taiwan (IRCARD), Japan, Malaysia, Thailand, Vietnam, Indonesia, and Kazakhstan. He is a senior consultant urological surgeon mainly in Endo and Laparoscopic surgery in various urological diseases such as Kidney stone diseases, Benign Prostatic hyperplasia and Prostate tumor, Bladder tumor, Kidney tumor and Adrenal gland tumor. Dr HENG SOVANDARA is also one of the faculty members and one of the course director for Laparoscopic training course for resident in Calmette Hospital. He has been a clinical monitor in Urology Unit for Calmette Hospital since 2017 and also been actively participated as a moderator in Urological Resident Course of Cambodia for Cambodian Urological Association as a part of the educational program since 2020. Recently he has been selected as a lecturer of urology for Specialized resident (DES Urologie) for the University of Health and Science and a lecturer for undergraduate program at Norton University of Health Sciences since 2017. He also participated in the development of the national Urology guideline for the Cambodian Urology Association and for the Ministry of Health. Dr HENG SOVANDARA has been working at Calmette hospital since 2015 and recently been promoted to Head of Urology Unit.

16th August 2025

Time	Session

15:30 17:00	Free Paper 【Video】 (4) Oncology: Kidney Ching‑Chia LiTaiwan Moderator Siros JitpraphaiThailand Moderator RCC and IVC ThrombectomyRCC and IVC thrombus Siros Jitpraphai Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, THAILAND Abstract Renal cell carcinoma (RCC) with inferior vena cava (IVC) thrombus represents a complex surgical challenge, with an incidence of venous involvement in 4-10% of cases. This case report demonstrates the successful surgical management of a 58-year-old female patient with a large left-sided renal mass and IVC thrombus. The patient presented with gross hematuria and was diagnosed with a 10 cm clear cell renal cell carcinoma (Fuhrman nuclear grade 3) extending into the renal vein and IVC. Recognizing the complexity of the case, a multidisciplinary approach was employed, involving urological and hepatobiliary surgical teams. The comprehensive treatment strategy included an open radical nephrectomy with IVC thrombectomy. The surgical technique was meticulously planned and executed, with several key considerations. Preoperative imaging was crucial in determining the exact level of thrombus, allowing for precise surgical planning. The procedure emphasized careful vascular control and en-bloc tumor removal, with intraoperative ultrasound used to ensure accurate thrombus localization. Surgical teams worked collaboratively to minimize potential complications and maximize surgical success. Operatively, the procedure was substantial, with an estimated blood loss of 900 mL and a total operative time of 5 hours. The patient required two days of postoperative intensive care and was discharged from the hospital seven days after the surgery. Pathological examination confirmed the diagnosis of clear cell renal cell carcinoma, with no lymph node metastasis detected and positive tumor thrombus. Importantly, surgical margins were found to be free of tumor. Follow-up evaluations have been encouraging, with no signs of tumor recurrence observed during regular intervals. This case illustrates the critical importance of a systematic surgical approach, precise technical execution, and comprehensive multidisciplinary management in successfully treating RCC with IVC thrombus. It provides valuable insights into the complex surgical management of this challenging condition, potentially offering guidance for similar cases in the future. Keyword: RCC (Renal Cell Carcinoma), IVC Thrombus, Thrombectomy, Surgical Technique, Multidisciplinary Management Highlight: RCC with IVC thrombus is a complex surgical challenge affecting 4-10% of cases. Successful management requires meticulous preoperative imaging, multidisciplinary team approach, and precise surgical technique. With careful planning and execution, 45-70% of patients can be cured through radical nephrectomy and IVC thrombectomy. Robotic Partial Nephrectomy in Complex and Difficult Tumor Location Sovandara HengCambodia Moderator TWTC - 2F Conference Room 4

Time

Session

15:30

17:00

Free Paper 【Video】 (4)

Oncology: Kidney

Ching‑Chia LiTaiwan Moderator

Siros JitpraphaiThailand Moderator RCC and IVC ThrombectomyRCC and IVC thrombus Siros Jitpraphai Division of Urology, Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, THAILAND Abstract Renal cell carcinoma (RCC) with inferior vena cava (IVC) thrombus represents a complex surgical challenge, with an incidence of venous involvement in 4-10% of cases. This case report demonstrates the successful surgical management of a 58-year-old female patient with a large left-sided renal mass and IVC thrombus. The patient presented with gross hematuria and was diagnosed with a 10 cm clear cell renal cell carcinoma (Fuhrman nuclear grade 3) extending into the renal vein and IVC. Recognizing the complexity of the case, a multidisciplinary approach was employed, involving urological and hepatobiliary surgical teams. The comprehensive treatment strategy included an open radical nephrectomy with IVC thrombectomy. The surgical technique was meticulously planned and executed, with several key considerations. Preoperative imaging was crucial in determining the exact level of thrombus, allowing for precise surgical planning. The procedure emphasized careful vascular control and en-bloc tumor removal, with intraoperative ultrasound used to ensure accurate thrombus localization. Surgical teams worked collaboratively to minimize potential complications and maximize surgical success. Operatively, the procedure was substantial, with an estimated blood loss of 900 mL and a total operative time of 5 hours. The patient required two days of postoperative intensive care and was discharged from the hospital seven days after the surgery. Pathological examination confirmed the diagnosis of clear cell renal cell carcinoma, with no lymph node metastasis detected and positive tumor thrombus. Importantly, surgical margins were found to be free of tumor. Follow-up evaluations have been encouraging, with no signs of tumor recurrence observed during regular intervals. This case illustrates the critical importance of a systematic surgical approach, precise technical execution, and comprehensive multidisciplinary management in successfully treating RCC with IVC thrombus. It provides valuable insights into the complex surgical management of this challenging condition, potentially offering guidance for similar cases in the future. Keyword: RCC (Renal Cell Carcinoma), IVC Thrombus, Thrombectomy, Surgical Technique, Multidisciplinary Management Highlight: RCC with IVC thrombus is a complex surgical challenge affecting 4-10% of cases. Successful management requires meticulous preoperative imaging, multidisciplinary team approach, and precise surgical technique. With careful planning and execution, 45-70% of patients can be cured through radical nephrectomy and IVC thrombectomy. Robotic Partial Nephrectomy in Complex and Difficult Tumor Location

Sovandara HengCambodia Moderator

TWTC - 2F Conference Room 4