This patient presented with acute dyspnoe and a normal chest film (not shown). The HRCT at presentation (left) shows lobular areas of ground glass attenuation. A control HRCT ten days later (right) demonstrated, that the findings had resolved without any treatment. The findings were thought to be due to hypersensitivity pneumonitis. #Clinical #Radiology #CTChest #Hypersensitivity #Pneumonitis #HypersensitivityPneumonitis #Resolution #RadiologyAssistant