Successive tests Special exploration geared towards the findings of the initial study. Some corresponds to the second level of care. The main special tests used in the studies on the subject are described below, although depending on the diagnostic orientation, the list is much broader: • Chest computed tomography (CT), abdominal, or both: if abnormalities are found on chest radiography or abdominal ultrasound or in the case of neoplasm for study extension. • Cranial CT: if there are previously known headaches or neurological symptoms. • Colonoscopy: If the fecal occult blood is positive, there is anemia, melena, or suspected Crohn's disease. • High endoscopy: if you have dysphagia, epigastralgia or high digestive tract bleeding.• Mammography: if breast tumor is detected. • Blood and urine culture: if fever of unknown origin.

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