Figure 4From: Patterns of radiotherapy practice for biliary tract cancer in Japan: results of the Japanese radiation oncology study group (JROSG) surveyChanges in chemotherapy regime combined with radiotherapy during 2000–2011 based on prior therapy. The patients were divided into four groups according to performance of surgery and the timing during the study period. A: Surgery, 2000–2005 (n = 24); B: Surgery, 2006–2011 (n = 30); C: No surgery, 2000–2005 (n = 65); D: No surgery, 2006–2011 (n = 48).Back to article page