Home / Case Study / Case No. 18: Leptospirosis – Bacterial Infection

Case No. 18: Leptospirosis – Bacterial Infection

Modality:

CT Chest, Lung window, axial views.

Spotter No 2: Leptospirosis
CT Chest, Lung window, axial views 1
Spotter No 2: Leptospirosis
CT Chest, Lung window, axial views 2
Spotter No 2: Leptospirosis
CT Chest, Lung window, axial views 3
Spotter No 2: Leptospirosis
CT Chest, Lung window, axial views 4

Description of Case No. 17:

CT scan lung window shows patchy alveolar infiltration, ground-glass attenuation, interlobular septa thickening, ill-defined small nodular hyper-attenuating areas.

Differential Diagnosis:

  • Acute eosinophilic pneumonia
  • Non-specific interstitial pneumonia
  • Leptospirosis
  • Pulmonary edema
  • Pneumocystis pneumonia
  • Cytomegalovirus pneumonia

Diagnosis:

Leptospirosis

Key Points:

Leptospirosis results from infection of the zoonoses Leptospira sp.
Leptospirosis is most common among adult males, resulting from occupational and recreational exposures.
The severe pulmonary form of leptospirosis is accompanied by pulmonary hemorrhage.
Pulmonary findings are caused by alveolar capillary injury, either focal or diffuse.
Radiographic findings may include small nodular opacities, confluent areas of consolidation, diffuse bilateral ground-glass areas of increased opacity, as well as pleural effusions.
These findings are compatible with the pathologic features of petechial and multifocal pulmonary hemorrhage.

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