Morphologic change of rectosigmoid colon using belly board and distended bladder protocol
Radiation Oncology Journal
; : 134-141, 2015.
Artículo
en Inglés
| WPRIM (Pacífico Occidental)
| ID: wpr-129478
Biblioteca responsable:
WPRO
ABSTRACT
PURPOSE:
This study investigates morphologic change of the rectosigmoid colon using a belly board in prone position and distended bladder in patients with rectal cancer. We evaluate the possibility of excluding the proximal margin of anastomosis from the radiation field by straightening the rectosigmoid colon. MATERIALS ANDMETHODS:
Nineteen patients who received preoperative radiotherapy between 2006 and 2009 underwent simulation in a prone position (group A). These patients were compared to 19 patients treated using a belly board in prone position and a distended bladder protocol (group B). Rectosigmoid colon in the pelvic cavity was delineated on planning computed tomography (CT) images. A total dose of 45 Gy was planned for the whole pelvic field with superior margin of the sacral promontory. The volume and redundancy of rectosigmoid colon was assessed.RESULTS:
Patients in group B had straighter rectosigmoid colons than those in group A (no redundancy; group A vs. group B, 10% vs. 42%; p = 0.03). The volume of rectosigmoid colon in the radiation field was significantly larger in group A (56.7 vs. 49.1 mL; p = 0.009). In dose volume histogram analysis, the mean irradiated volume was lower in patients in group B (V45 27.2 vs. 18.2 mL; p = 0.004). In Pearson correlation coefficient analysis, the in-field volume of rectosigmoid colon was significantly correlated with the bladder volume (R = 0.86, p = 0.003).CONCLUSION:
Use of a belly board and distended bladder protocol could contribute to exclusion of the proximal margin of anastomosis from the radiation field.
Texto completo:
Disponible
Base de datos:
WPRIM (Pacífico Occidental)
Asunto principal:
Radioterapia
/
Neoplasias del Recto
/
Vejiga Urinaria
/
Posición Prona
/
Colon
/
Fuga Anastomótica
Límite:
Humanos
Idioma:
Inglés
Revista:
Radiation Oncology Journal
Año:
2015
Tipo del documento:
Artículo