Gastric carcinoma is usually diagnosed using radiologic contrast methods, endoscopic examination with biopsies and histological analyses. In order to determine the stage of the disease, preoperative diagnosis requires determining presence of distant metastasis, malignant lymph node transformation, and involvement of the surrounding structures. Standards for gastric carcinoma staging have international variations, but all of them are based on the routes of metastasis. Different imaging methods are used for diagnosis and staging of gastric carcinoma, each with its advantages and shortcomings, so guidelines for diagnosis and follow-up for this malignoma are established accordingly.

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