What is gastroenterologic surgery ?

Gastroenterologic surgery includes a variety of surgical procedures performed on the organs and conduits of the digestive system. These procedures include the repair, removal, or resection of the esophagus, liver, stomach, spleen, pancreas, gallbladder, colon, anus, and rectum. Gastroenterologic surgery is performed for diseases ranging from appendicitis, gastroesophageal reflux disease (GERD), and gastric ulcers to the life-threatening cancers of the stomach, colon, liver, and pancreas, and ulcerative conditions like ulcerative colitis and Crohn's disease.

Purpose

Scientific understanding, treatment, and diagnostic advances, combined with an aging population, have made this century the golden age of gastroenterology. Gasteroenterologic surgery's success in treating conditions of the digestive system by removing obstructions, diseased or malignant tissue, or by enlarging and augmenting conduits for digestion is now largely due to the ability to view and work on the various critical organs through video representation and by biopsy. The word abdomen is derived from the Latin abdere, meaning concealed or un-seeable. The use of gastrointestinal endoscopy, laproscopy, computer tomography (CT) scan, and ultrasound has made the inspection of inaccessible organs possible without surgery, and sometimes treatable with only minor surgery. With advances in other diagnostics such as the fecal occult blood test known as the Guaiac test, the need for bowel surgery can be determined quickly without expensive tests. This is especially important for colon cancer, which is the leading cause of cancer mortality in the United State, with about 56,000 Americans dying from it each year.

Some prominent surgical procedures included in gasteroentologic surgery are:

Demographics

Gasteroentologic diseases disproportionately affect the elderly, with prominent disorders including diverticulosis and other diseases of the bowel, and fecal and urinary incontinence. Many diseases, like gastrointestinal malignancies and liver diseases, occur more frequently as people age. Because the number of Americans age 65 and above is expected to rise from 35 million in 2000 to 78 million by 2050, with those over 85 rising from four million in 2000 to almost 18 million by 2050, gastroenterologic surgeries are greatly in need, not only to prolong life but to relieve suffering. It is not surprising that the elderly account for approximately 60% of health care expenditures, 35% of hospital discharges, and 47% of hospital days.

Sixty to 70 million Americans are affected by digestive diseases, according to the National Digestive Diseases Clearinghouse. Digestive diseases accounted for 13% of all hospitalizations in the United States in 1985 and 16% of all diagnostic procedures. The most costly digestive diseases are such gastrointestinal disorders as diarrhea infections ($4.7 billion); gallbladder disease ($4.5 billion); colorectal cancer ($4.5 billion); liver disease ($3.2 billion); and peptic ulcer disease ($2.5 billion). Appendectomy is the fourth most frequent intra-abdominal operation performed in the United States. Appendicitis is one of the most common causes of emergency abdominal surgery in children. Appendectomies are more common in males than females, with incidence peaking in the late teens and early twenties. Each year in the United States four appendectomies are performed per 1,000 children younger than 18 years of age. Gallstones are responsible for about half of the cases of acute pancreatitis in the United States. More than 500,000 Americans have gallbladder surgery annually. The most common procedure is the laparoscopic cholecystectomy. Women 20–60 years of age have twice the rate of gallstones as men, and individuals over 60 develop gallstones at higher rates than those who are younger. Those at highest risk for gallstones are individuals who are obese and those with elevated estrogen levels, such as women who take birth control pills or hormone replacement therapy.

According to the Centers for Disease Control and Prevention, 25 million Americans suffer from peptic ulcer disease some time in their life. Between 500,000 and 850,000 new cases of peptic ulcer disease and more than one million ulcer-related hospitalizations occur each year. Ulcers cause an estimated one million hospitalizations and 6,500 deaths per year. According to the American College of Gastroenterology Bleeding Registry, patients tend to be elderly; male; and users of alcohol, tobacco, aspirin, non-steroidal anti-inflammatory drugs (NSAIDs), and anticoagulants. According to the National Diabetic and Digestive Diseases (NDDK), about 25–40% of ulcerative colitis patients must eventually have their colons removed because of massive bleeding, disease, rupture, or the risk of cancer. The use of corticosteroids to control inflammation can destroy tissue and require removal of the colon. According to the Society of American Gastrointestinal Endoscopic Surgeons, 600,000 surgical procedures alone are performed in the United States to treat a colon disease.

The incidence of gasteroenterologic diseases differs among ethnic groups. For instance, while gastroesophageal reflux disease (GERD) is common in Caucasians, its incidence is lower among African Americans. This is true for the incidence of esophageal and gastric-cardio adenocarcinoma. On the other hand, African Americans, Hispanics, and Asians have a different form of cancer of the esophagus called squamous cell carcinoma, seen also in new immigrants from northern China, India, and northern Iran. While gastric and peptic ulcerative incidence due to Heliobacter pylori ranges in rates from 70–80% for African Americans and Hispanics, the rate for Caucasians is only 34%. Caucasians, on the other hand, have higher rates of intestinal gastric cancer. Finally, there are differences in colon cancer mortality between African Americans and Caucasians. African Americans with colon cancer have a 50% higher mortality risk than Caucasians. Advanced cancer stage at presentation accounts for half of this increased risk. Restricted access to health care, especially screening innovations, may account for much of this disparity.

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