Internal hernia after laparoscopic gastric bypass surgery: a case report and literature review.

Obesity is becoming more common in the United States, affecting > or = 30% of adults aged 20 years and older. Obesity (body mass index 30) is ranked second only to tobacco use as a preventable cause of death in the United States. Roux-en-Y gastric bypass (RYGBP) is being performed at a rapidly increasing rate, and laparoscopic Roux-en-Y gastric bypass (LRYGBP) surgery is frequently chosen rather than an open approach because of lower morbidity rates.