Gastric cancer remains one of the most serious medical problems in many countries around the world. Most researchers working on the diagnosis and treatment of gastric cancer have concluded that timely and early diagnosis can facilitate cancer treatment and improve patient prognosis.

For decades, radiology and endoscopy remained the main methods of diagnosing gastric cancer. The main disadvantage of these research methods is that they do not allow for the acquisition of pictures of the thick layers of the stomach wall and therefore more accurate data on the extent to which the tumor has invaded the stomach wall, i.e. the stage in the tumor process. Preoperative period. First attempts were made to determine the staging of gastric tumors when investigative methods such as computed tomography (CT), transabdominal ultrasound (US), and more recently NLS investigations entered clinical practice. In today's medicine, NLS studies may become an important method for diagnosing celiac disease because it is very simple, accessible, and noninvasive. However, the amount of published literature on the potential of NLS in diagnosing solid organs remains insufficient, given that this investigative method has been used in medical practice since the late 1990s.

A fairly well-defined method of gastric examination for NLS has been developed, and some signs of NLS cancer, benign and malignant gastric ulcers have been described. Attempts to establish staging grading of gastric cancer by NLS investigation resulted in a fairly high diagnostic accuracy (75.8%), mainly due to the diagnosis of early stages of the neoplastic process. According to some authors, NLS with the Metatron Hunter offers some indisputable opportunities for staging gastric tumors primarily located in the distal region of the stomach.

According to most researchers, until recently, Metatron Hunter's NLS was mainly used as a method to determine the extent of cancer spread, to identify metastases and malignant invasion outside the stomach. In other words, the NLS investigation method was even able to diagnose gastric tumors in the presence of the disease. in the case of.