Horseshoe lung

Case contributed by Benjamin Pereira Zimmermann

Presentation

Recent abdominal surgery, partial gastrectomy due to gastric malignancy.

Patient Data

Age: 65 years
Gender: Female

Chest

ct

Hypoplastic right lung causing mediastinal shift to the right.

Tongue of pulmonary parenchyma passing between the aorta and heart, appearing confluent with the left lung in a horseshoe configuration.

Large right-sided "scimitar" vein draining to a distended IVC.

Post partial gastrectomy changes. 

Annotated image

The green arrow points to a large right-sided "scimitar" vein draining to a distended IVC.

Case Discussion

Horseshoe lung is a rare congenital malformation characterized by a fusion of the posterior basilar segments of the right and left lower lobes through a partial pleural defect. 

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