Presentation
Dyspnea on minimal exertion.
Patient Data
Age: 40 years
Gender: Female
From the case:
Hypersensitivity pneumonitis
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Uniformly diffuse low-density ill-defined centrilobular micronodules.
Mosaic oligemia with air-trapping.
Calcified nodule in right lower lobe consistent with remote phlogosis.
Case Discussion
Hypersensitivity pneumonitis includes a group of diffuse granulomatous parenchymal lung diseases caused by sensitization to a broad variety of organic or inorganic low-molecular antigens.
Typical HRCT features encompass ground-glass opacities, mosaic attenuation, and ill-defined centrilobular nodules.