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Bladder filling variations during concurrent chemotherapy and pelvic radiotherapy in rectal cancer patients: early experience of bladder volume assessment using ultrasound scanner

 Jee Suk Chang  ;  Hong In Yoon  ;  Hye Jung Cha  ;  Yoonsun Chung  ;  Yeona Cho  ;  Ki Chang Keum  ;  Woong Sub Koom 
 RADIATION ONCOLOGY JOURNAL, Vol.31(1) : 41-47, 2013 
Journal Title
Issue Date
Observer variation ; Radiotherapy ; Rectal neoplasms ; Ultrasonography ; Urinary bladder
PURPOSE: To describe the early experience of analyzing variations and time trends in bladder volume of the rectal cancer patients who received bladder ultrasound scan. MATERIALS AND METHODS: We identified 20 consecutive rectal cancer patients who received whole pelvic radiotherapy (RT) and bladder ultrasound scan between February and April 2012. Before simulation and during the entire course of treatment, patients were scanned with portable automated ultrasonic bladder scanner, 5 times consecutively, and the median value was reported. Then a radiation oncologist contoured the bladder inner wall shown on simulation computed tomography (CT) and calculated its volume. RESULTS: Before simulation, the median bladder volume measured using simulation CT and bladder ultrasound scan was 427 mL (range, 74 to 1,172 mL) and 417 mL (range, 147 to 1,245 mL), respectively. There was strong linear correlation (R = 0.93, p < 0.001) between the two results. During the course of treatment, there were wide variations in the bladder volume and every time, measurements were below the baseline with statistical significance (12/16). At 6 weeks after RT, the median volume was reduced by 59.3% to 175 mL. Compared to the baseline, bladder volume was reduced by 38% or 161 mL on average every week for 6 weeks. CONCLUSION: To our knowledge, this study is the first to prove that there are bladder volume variations and a reduction in bladder volume in rectal cancer patients. Moreover, our results will serve as the basis for implementation of bladder training to patients receiving RT with full bladder.
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1. College of Medicine (의과대학) > Dept. of Pharmacology (약리학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiation Oncology (방사선종양학교실) > 1. Journal Papers
Yonsei Authors
Keum, Ki Chang(금기창) ORCID logo https://orcid.org/0000-0003-4123-7998
Koom, Woong Sub(금웅섭) ORCID logo https://orcid.org/0000-0002-9435-7750
Yoon, Hong In(윤홍인) ORCID logo https://orcid.org/0000-0002-2106-6856
Chang, Jee Suk(장지석) ORCID logo https://orcid.org/0000-0001-7685-3382
Chung, Yoon Sun(정윤선)
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