Compared with their nondiabetic counterparts , cancer patients with preexisting diabetes are ∼50 % more likely to die after surgery .
OBJECTIVE Diabetes appears to increase risk for some cancers , but the association between preexisting diabetes and  postoperative mortality in cancer patients is less clear .
Our objective was to systematic ally review postoperative mortality in cancer patients with and without preexisting diabetes and summarize results using meta- analysis .
Diabetes is not a risk factor for hospital mortality following contemporary coronary artery bypass grafting.
The outcome of coronary artery bypass grafting ( CABG )  in diabetic patients has traditionally been worse than in non-diabetic patients . Recent studies have suggested an improvement in outcome in diabetic patients undergoing contemporary CABG .  However , the direct impact of diabetes on mortality and morbidities following CABG remains unclear . We retrospectively analyzed prospect ively collected data of 2725 CABG patients from January 1998 to December 2005 : one thous and and eighty-five ( 40 % ) diabetics and 1640 ( 60 % ) non-diabetics [ mean age 65+/-11 years , 1882 ( 69 % ) male ] . Subgroup analysis was performed for two study periods ( 1998 - 2002 vs. 2003 - 2005 ) . The overall hospital mortality was 1.8 % [ n=50 ; diabetics : 2.4 % , non-diabetics : 1.5 % ( P=0.07 ) ] . The mortality rate among diabetics decreased from 3.1 % in 1998 - 2002 to 1.0 % in 2003 - 2005 ( P=0.021 ) . Diabetes was not an independent predictor of hospital mortality but predicted the occurrence of deep sternal wound infection ( OR=3.77 ) . Diabetes significantly decreased long-term survival [ 1-year and 5-year survival 94.7+/-0.7 % and 81.9+/-1.4 % for diabetic vs. 95.4+/-0.5 % and 85.9+/-1.0 % for non-diabetic patients ( P=0.01 ) ] . Excellent results following contemporary CABG can be expected in diabetics with a similar mortality compared to non-diabetics . Therefore , our data suggest that diabetes may , in fact , not be a risk factor for adverse outcome following CABG . However , long-term survival in diabetics remains significantly inferior compared to non-diabetics
Compared with their nondiabetic counterparts , cancer patients with preexisting diabetes are ∼50 % more likely to die after surgery .
OBJECTIVE Diabetes appears to increase risk for some cancers , but the association between preexisting diabetes and  postoperative mortality in cancer patients is less clear .
Our objective was to systematic ally review postoperative mortality in cancer patients with and without preexisting diabetes and summarize results using meta- analysis .