TUESDAY, May 21 (HealthDay News) -- Racial disparities exist in the treatment of non-small cell lung cancer among hospitals in the United States, according to a large new study.

FRIDAY, May 17 (HealthDay News) -- Liver transplants to treat a common type of liver cancer are a viable option for people infected with HIV, according to new research.

WEDNESDAY, May 15 (HealthDay News) -- Background noise in the operating room -- such as the sounds of surgical equipment, chatter or music -- can affect surgeons' ability to understand what is being said to them and might result in a breakdown of communication among surgical team members, according to a new study.

TUESDAY, May 14 (HealthDay News) -- The success of a common surgery for pelvic organ prolapse -- a painful and distressing condition affecting many women -- lessens over time, according to a new study.

THURSDAY, May 2 (HealthDay News) -- Weight loss after gastric bypass surgery varies widely, and scientists say they have identified a genetic variation that may help explain the discrepancy.

THURSDAY, May 2 (HealthDay News) -- The Lap-Band weight-loss procedure should not be restricted only to patients who are very severely obese, a new study suggests.

WEDNESDAY, May 1 (HealthDay News) -- Despite previous concerns, older people who receive general anesthesia are not at greater risk of developing long-term dementia or Alzheimer's disease, a new study says.

WEDNESDAY, May 1 (HealthDay News) -- Depression is relatively common in patients who undergo heart bypass surgery, and a new study finds that short-term use of antidepressants may aid patients' recovery.

TUESDAY, April 30 (HealthDay News) -- Gastric bypass -- a widely used weight-loss procedure -- appears to change the hormones and amino acids produced during digestion, which could explain how the surgery eliminates symptoms of type 2 diabetes, according to a small new study.

TUESDAY, April 30 (HealthDay News) -- Surgery may not be the best option for treating non-melanoma skin cancer in frail, elderly patients, a new study reports.