Based on the discussion and integrated management of a case of chest radiology, the reasoned approach to the perceptive-interpretative analysis and the "reasoned" diagnostic integration is tentatively exemplified. The request of a chest X-ray from the emergency department concerned a 75-year old patient, heavy smoker and chronic alcoholic with reduced vesicular murmur, diffuse hissing sounds, basal rales, weight loss and lack of appetite. The finding of right apical nodular opacities was critically evaluated to establish its diagnostic relevance (contours, opacity, site, accessory signs). After broad-spectrum antibiotic therapy a second chest X-ray was substantially unchanged. For careful diagnostic assessment CT of the chest was performed and the definitive diagnosis of main airway obstruction, bronchiolitis and right nonspecific apical outcomes was established.
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