08/20/2013 12:40 EDT | Updated 10/20/2013 05:12 EDT

Cancer Surgeries Leading To More Complications, But Higher Survival Rate: Study

MONTREAL - There are more complications among cancer patients who undergo surgery but fewer deaths, indicates a study published in the online scientific journal "British Medical Journal Open."

Complications include blood clots, pressure sores, infections and respiratory problems.

Three researchers from l'Universite de Montreal contributed to the international project, which looked at 2.5 million patients aged over 18 who underwent oncological surgery in the U.S. between 1999 and 2009.

The surgery included complete or partial removal of the intestine, bladder, esophagus, stomach, uterus, lung, pancreas or prostate.

Researchers found an "alarming" increase in complications after surgery but patients were more likely to survive because doctors have learned to recognize and treat the problems quickly.

Researchers said efforts must now be increased to prevent the complications.

Also on HuffPost

Photo gallery Leading Causes Of Death In Canada See Gallery