What Diseases Can Be Detected By An Endoscopy
Reviewed by Arturo Gonzalez, M.D.
Endoscopy is a fascinating medical procedure that offers a peek inside the human body without the need for large incisions. It’s a tool that Dr. Arturo Gonzalez uses to diagnose a variety of conditions by directly visualizing the internal organs and structures. This article will explore what an endoscopy can reveal, the types of endoscopy procedures available, and the diseases that can be detected through this remarkable technology.
Understanding Endoscopy
Endoscopy involves using a long, flexible tube equipped with a light and camera, allowing doctors to view images of your digestive tract on a monitor. It can be performed as an upper or lower procedure, depending on the area of interest.
Upper Endoscopy Procedure
An upper endoscopy, also known as an esophagogastroduodenoscopy (EGD), examines the upper part of your digestive system. This includes the esophagus, stomach, and the beginning of the small intestine (duodenum).
During an EGD, the endoscope is gently inserted through the mouth and guided down the throat. This procedure is typically performed to investigate symptoms such as persistent heartburn, nausea, vomiting, abdominal pain, or difficulty swallowing.
Lower Endoscopy
The lower endoscopy, commonly referred to as a colonoscopy, examines the large intestine (colon) and rectum. During this procedure, the endoscope is inserted through the rectum. It is often used to screen for colorectal cancer and is an essential part of preventive healthcare for individuals over the age of 50.
Another form of lower endoscopy is the sigmoidoscopy, which only examines the lower part of the colon and rectum. It is less comprehensive than a full colonoscopy but can still be useful in screening for certain conditions.
What Does an Endoscopy Show?
The images captured during an endoscopy can reveal a wide array of conditions. Here’s a closer look at what doctors might be looking for during this procedure.
Inflammation and Ulcers
One of the primary uses of endoscopy is to detect inflammation or ulcers. Inflammation can occur in the esophagus, stomach, or intestines and can be indicative of conditions such as gastritis or esophagitis. Ulcers, particularly peptic ulcers in the stomach or small intestine, can also be detected and evaluated.
Gastroesophageal Reflux Disease (GERD)
For individuals experiencing chronic heartburn or acid reflux, an upper endoscopy can help diagnose GERD. This condition occurs when stomach acid frequently flows back into the esophagus, leading to irritation.
Tumors and Cancer
Endoscopy is a vital tool in the detection of tumors and cancers within the digestive tract. During the procedure, doctors can identify abnormal growths and take biopsies for further analysis. This is crucial for early detection of gastrointestinal cancers such as esophageal, gastric, and colorectal cancer.
Polyps
Polyps are abnormal tissue growths that can occur in the colon. During a colonoscopy, these polyps can be identified and often removed during the same procedure. Removing polyps is a preventive measure against colorectal cancer, as some types of polyps can become cancerous over time.
Celiac Disease
Celiac disease is an autoimmune disorder where the ingestion of gluten leads to damage in the small intestine. An upper endoscopy can help detect this disease by allowing doctors to take a biopsy of the small intestine, which can then be analyzed for signs of damage and inflammation.
Barrett’s Esophagus
Barrett’s esophagus is a condition that occurs when the lining of the esophagus changes due to prolonged acid exposure from GERD. This condition increases the risk of developing esophageal cancer. Endoscopy is used to detect these changes and monitor the condition over time.
Diseases Detected by Endoscopy
The scope of diseases that can be detected through endoscopy is broad. Here are some specific conditions that can be identified:
- Peptic Ulcers: Painful sores in the lining of the stomach or duodenum.
- Esophageal Strictures: Narrowing of the esophagus that can cause swallowing difficulties.
- Crohn’s Disease: A type of inflammatory bowel disease affecting the gastrointestinal tract.
- Ulcerative Colitis: Another form of inflammatory bowel disease, primarily affecting the colon.
- Diverticulitis: Inflammation or infection of small pouches that can form in the intestines.
- Infections: Certain infections, including Helicobacter pylori, which can cause ulcers.
Preparation and Aftercare
Before undergoing an endoscopy, certain preparations are required. For an upper endoscopy, patients are generally advised to fast for several hours. For a colonoscopy, a bowel cleansing regimen is necessary to ensure the colon is clear for examination.
After the procedure, patients might experience mild discomfort or bloating. Rest is recommended, and any specific aftercare instructions provided by the doctor should be followed.

Conclusion
Endoscopy is a powerful diagnostic tool that plays a crucial role in identifying and managing a variety of diseases within the digestive system. Its ability to provide real-time images and facilitate biopsies makes it indispensable in modern medicine. By understanding what an endoscopy can show and how it can assist in disease detection, individuals can make informed decisions regarding their health care and screening options.
The perfect place to begin your GI screening or symptom/disease diagnosis is with Gonzalez Surgery in Houston, Katy and Victoria, Texas. Dr. Arturo Gonzalez has over 20 years experience in the diagnosis and treatment of routine and complex GI symptoms and diseases all while providing his patients with excellent recoveries and outcomes.
Knowing what diseases can be detected by an endoscopy enhances your awareness and empowers you to take proactive steps in maintaining your health. Let Gonzalez Surgery in Houston, Katy, and Victoria, Texas offer you the peace of mind knowing that your healthcare providers have extensive training and experience in diagnosis and management of gastroenterologic diseases and conditions.
Whether you are needing a routine GI screening colonoscopy or are seeking symptom relief we can help.
