Gastroenterology is a branch of medicine focused on the study, diagnosis, and treatment of disorders affecting the digestive system.
The digestive system encompasses the esophagus, stomach, small intestine, large intestine, liver, gallbladder, and pancreas, and the specialist responsible for its care is known as a gastroenterologist.
What Is a Gastroenterologist?
With deep expertise in diseases of the gastrointestinal tract and liver, gastroenterologists are uniquely equipped to guide patients toward better health outcomes and an improved quality of life.
Because gastrointestinal conditions are numerous and often share overlapping symptoms, one of the most important functions of this specialty is accurate diagnosis. To do so, gastroenterologists use a variety of tools to visualize the interior of the digestive tract and obtain tissue samples, among other techniques. Once a complete clinical picture is established, they can determine the diagnosis and offer the most appropriate treatment for each patient’s condition.
There is also a pediatric gastroenterologist, who specializes in digestive health issues in newborns, children, and adolescents. Given that children are constantly developing and changing, this specialist’s expertise encompasses the full range of conditions that can affect younger patients, including food allergies, short bowel syndrome, and gastroesophageal reflux in infants.
What Tests Does a Gastroenterologist Perform?
Before reaching a diagnosis, gastroenterologists have a broad array of tools and procedures at their disposal to evaluate a patient’s digestive health. The most used include:
- Upper endoscopy (EGD): Using an endoscope, this procedure allows direct visualization of the esophagus, stomach, and the first portion of the small intestine (duodenum). It is frequently used to diagnose conditions such as gastritis, tumors, esophagitis, and peptic ulcers.
- Colonoscopy: Similar in approach to upper endoscopy, this procedure examines the large intestine (colon) and the terminal portion of the small intestine. It is essential for diagnosing colorectal cancer, precancerous polyps, and other colon diseases.
- Abdominal ultrasound: Using sound waves to generate images of the abdominal organs, including the liver, gallbladder, and kidneys, this study helps diagnose pancreatitis, liver disease, and gallstones.
- Liver function tests: Blood tests that assess how well the liver is functioning by measuring levels of hepatic enzymes, bilirubin, and proteins. They are used to diagnose conditions such as hepatitis and cirrhosis.
- Breath tests: Non-invasive tests that analyze exhaled air to detect bacterial overgrowth in the digestive tract.
- Esophageal manometry: Measures the pressure and muscular contractions of the esophagus, helping identify esophageal motility disorders.
- Esophageal pH monitoring: Determines the level of acid exposure in the esophagus and aids in the diagnosis of gastroesophageal reflux disease (GERD).
When to See a Gastroenterologist
Several signs and symptoms may indicate that a visit to a gastroenterologist is warranted. The most common reasons include:
- Abdominal pain: Recurrent or chronic abdominal pain is a hallmark symptom of many digestive conditions. If the pain persists for days or weeks or does not improve in intensity, seeking gastroenterological evaluation is strongly recommended.
- Changes in bowel habits: Significant shifts such as chronic diarrhea, persistent constipation, or blood in the stool are important reasons to schedule a consultation.
- Gastroesophageal reflux: While occasional heartburn is common, severe or persistent symptoms, including acid regurgitation, chest pain, or difficulty swallowing, require medical attention.
- Unexplained weight loss: Unintentional weight loss can be a sign of various digestive diseases and, regardless of the underlying cause, warrants prompt evaluation.
- Jaundice: A yellowing of the skin or eyes is a sign of liver dysfunction or biliary problems and should never be ignored.
- Unexplained anemia: Chronic gastrointestinal blood loss, whether from ulcers, polyps, or colorectal cancer, is one of the potential causes of anemia that a gastroenterologist can help identify.
- Family history: Even without current symptoms, a family history of digestive diseases such as colorectal cancer, Crohn’s disease, or ulcerative colitis is reason enough to consult a gastroenterologist for surveillance and early detection.
Gastroenterology touches virtually every aspect of daily well-being, which is why it stands as one of medicine’s most essential specialties. Seeking evaluation early, before symptoms worsen or complications develop, can make a meaningful difference in how effectively a gastrointestinal condition is managed.
Depending on the diagnosis, the gastroenterologist may manage the condition directly or refer the patient to a gastrointestinal surgeon for more invasive procedures when needed.
Find a Gastroenterologist Near You
ABC Medical Center’s Internal Medicine Department has a team of highly trained gastroenterology specialists dedicated to providing comprehensive, personalized care for all your digestive health needs.
Our gastroenterologists in Mexico City are committed to your well-being, utilizing the latest technology and most advanced treatments to manage conditions such as gastroesophageal reflux disease (GERD), inflammatory bowel disease, colorectal cancer, and more.
Fuentes: ACG, Elsevier, MSD Manuals
