Presentation
Known case of Scimitar syndrome
Patient Data
Gender: Female
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Horseshoe lung in the setting of scimitar syndrome
- 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 the distended IVC.
- Hypoplastic right lung causing mediastinal shift to the right.
Case Discussion
Horseshoe lung is a potential finding in congenital pulmonary venolobar syndrome, where the most inferior portion of the right lung passes posterior to the heart, anterior to the aorta and abuts/ joins the left lung in a horseshoe configuration. It has little clinical relevance other than as a hallmark for other important congenital findings such as:
- scimitar vein/syndrome or other forms of partial anomalous pulmonary venous return
- sinus venosus ASD
- pulmonary hypertension
- pulmonary sequestration (systemic vessel supplying the lung)