Diagnostics of precancerous lesions of the stomach and colon
Stomach and colon cancers do not occur suddenly, but develops over a certain, often long time on the background of precancerous mucosal changes (atrophy, metaplasia and dysplasia) that arise accompanying chronic digestive diseases: GERD, Barrett's esophagus, chronic atrophic gastritis, tied infection with Helicobacter pylori (Helicobacter pilory), colon polyps, and others. The craftiness of gastric and colon cancer is that their main symptom is the absence of any symptoms in its early stages of the disease. The only way to prevent the progression of precancerous changes in the cancer itself is using a systematic modern diagnostic (gastroscopy or colonoscopy). Such diagnostics makes it possible to identify the appropriate chronic diseases, against which so called precancerous changes develop in the mucous membrane of the stomach and intestines (including early gastric cancer and early colorectal cancer) at the stage when more effective treatment and recovery are possible.
In Gastro center of the Clinic "Oberig" the special attention during the clinical and endoscopic diagnosis is given to identification of the chronic diseases and precancerous lesions of the mucous membrane (atrophy, metaplasia, and dysplasia of varying degrees) and early cancer that, in most cases, allows you to perform endoscopic removal of tumors without open surgery during endoscopic procedures (endoscopic surgery: endoscopic mucosal resection - EMR and endoscopic dissection of the submucosal layer - ESD).
How do the diagnostics work?
Diagnostics of chronic gastrointestinal diseases and precancerous lesions of the stomach and colon performed by a team of doctors - gastroenterologists, endoscopists (perform complex gastro and colonoscopy with biopsy) and morphologists (histological examination of biopsy samples is carried out), if necessary with the assistance of radiologists (carried MSCT or MRI) to study the prevalence of pathological process beyond the stomach or colon. The main task of the Gastro center team is to identify precancerous diseases and conditions of the patient and their timely treatment before the development of invasive cancer.
Comprehensive diagnostic of gastroscopy and colonoscopy in the clinic conducted with the help of modern video endoscopic system OLYMPUS last generation (EVIS EXERA III 190) with the high resolution that allows you to zoom the image in the test zone 115 times, and includes:
- Narrow-spectrum of lighting mucosa with the white light (NBI -chronoscopy);
- The usage of multiple stains to detect accurately the smallest lesions of the mucous membrane (chromoscopy) that cannot be studied in normal lighting;
- Colonoscopy. Normal lighting
- Chromoscopy (embellishment of acetic acid and indigo carmine)
- Narrow-spectrum diagnostic (NBI – chromoscopy)
- The exact (in the area of pathological changes) multiple taking samples for histological examination (precisioned polytope biopsy).
- Endosonography (endoscopic ultrasound) - the usage of an ultrasonic sensor which is the end of a special endoscope and allows a very accurately to see the depth of germination (invasion) of the tumor in the wall of the stomach or colon. Thin endoscopic ultrasound probe in the stomach (endosonography). Rendered polyp of the stomach and the limits of its germination.
Thus, endoscopy without complying with the above mandatory procedures is the lack of information and its diagnostics estimated in detecting precancerous polyps and early cancer is extremely low. Only complex endoscopic examinations ensure the patient the exact answer to the question whether there is a precondition for the development of cancer, and at what stage is the disease process.
Doctors of Gastro center widely use capabilities of multispyral computed tomography (MSCT) for the detection of cancer disease of patients, prevalence estimates process and detect metastases, among them:
"Virtual colonoscopy" (MSCT – colonography ) with double - contrast is a special examination of the colon on the CT scan, which allows you explore virtually the inside of the colon for the presence of tumors (reveals polyps and tumors with the size of 5 mm or more). Limitation of this method is the inability to perform a biopsy to determine the final (morphological) diagnosis. Video recording study
MSCT – onkoscreening is a study on the CT scan, which allows you precisely examine not only the abdomen and the chest organs and pelvis to identify the spread of the tumor process and metastasis. Study performed with contrast enhancement that allows with the high accuracy to differentiate the presence and nature of tumors to determine the stage of cancer, the possibility of surgical treatment.
Remember that the diagnosis of gastric cancer and colon cancer in patients over 40 years old should be done on a regular basis, regardless of the patient's complaints (screening programs). The Clinic “Oberig” offers one of these screening programs, called “ONKO -check up”.