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American heart journal1977; 93(4); 501-505; doi: 10.1016/s0002-8703(77)80413-4

Horses lung: Report of two cases.

Abstract: Two cases of horseshoe lung are described; one was suspected and the other was diagnosed preoperatively. Both underwent successful surgical treatment. The embryology of this anomaly is briefly reviewed with reference to the closely related scimitar syndrome (anomalous venous return of right lung to inferior atriocaval junction). Diagnostic studies are discussed with stress on the need for a thorough functional evaluation of both the heart and lungs before the surgical indication is made.
Publication Date: 1977-04-01 PubMed ID: 842446DOI: 10.1016/s0002-8703(77)80413-4Google Scholar: Lookup
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Summary

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The article discusses two incidents of the rare congenital condition known as ‘horseshoe lung’, describes the diagnostic procedures used preoperatively, and provides brief insights into the embryology of the anomaly. Successful medicines and surgical treatment were administered to both cases.

Introduction to Horseshoe Lung

  • ‘Horseshoe lung’ is an exceptionally rare congenital disorder where the person’s lungs are fused along the posterior (or back) part, forming a U shape, which resembles a horseshoe. It’s seldom diagnosed preoperatively.

Case Studies

  • Two instances of a horseshoe lung have been discussed. In one, the condition was merely suspected, while in the other, diagnosis was confirmed before the surgical operation.
  • Both cases were subjected to successful surgical treatment, demonstrating the disorder’s treatability when aptly diagnosed.

The Embryology of the Disorder

  • The paper gives a brief summary of the embryology of the anomaly, i.e., the process through which the anomaly develops in the embryo. This is significant as it provides insight into the root cause and pathogenesis of the disease. Understanding this process can assist in devising targeted approaches to treatment.
  • Particular reference is made to the closely related “scimitar syndrome”, a rare congenital heart disease where the pulmonary veins return to the inferior vena cava rather than the left atrium. It signifies an abnormal formation of the lung’s vasculature that often coexists with horseshoe lung, suggesting that their underlying embryological mechanisms might be interconnected.

Diagnostic Procedure

  • The importance of a comprehensive functional evaluation of the heart and lungs before determining whether surgery is necessary is stressed.
  • The paper discusses the different diagnostic studies conducted in these cases, providing valuable information for future cases on early detection and proper diagnosis strategies.

Cite This Article

APA
Orzan F, Angelini P, Oglietti J, Leachman RD, Cooley DA. (1977). Horses lung: Report of two cases. Am Heart J, 93(4), 501-505. https://doi.org/10.1016/s0002-8703(77)80413-4

Publication

ISSN: 0002-8703
NlmUniqueID: 0370465
Country: United States
Language: English
Volume: 93
Issue: 4
Pages: 501-505

Researcher Affiliations

Orzan, F
    Angelini, P
      Oglietti, J
        Leachman, R D
          Cooley, D A

            MeSH Terms

            • Abnormalities, Multiple / diagnostic imaging
            • Abnormalities, Multiple / embryology
            • Abnormalities, Multiple / surgery
            • Child
            • Dextrocardia / complications
            • Dextrocardia / diagnostic imaging
            • Dextrocardia / embryology
            • Dextrocardia / surgery
            • Female
            • Humans
            • Infant
            • Lung / abnormalities
            • Lung / diagnostic imaging
            • Pneumonectomy
            • Pulmonary Artery / abnormalities
            • Pulmonary Artery / diagnostic imaging
            • Pulmonary Artery / surgery
            • Pulmonary Veins / abnormalities
            • Pulmonary Veins / diagnostic imaging
            • Pulmonary Veins / surgery
            • Radiography
            • Syndrome

            Citations

            This article has been cited 5 times.
            1. Birene B, Maurice P, Garel C, Prevost B, Soreze Y, Chabaud M, Jouannic JM. Prenatal Diagnosis of Horseshoe Lung: A Report of Three Cases and Review of the Literature. Prenat Diagn 2025 Jul;45(8):1027-1038.
              doi: 10.1002/pd.6814pubmed: 40347440google scholar: lookup
            2. Lee ML, Lue HC, Chiu IS, Chiu HY, Tsao LY, Cheng CY, Yang AD. A systematic classification of the congenital bronchopulmonary vascular malformations: dysmorphogeneses of the primitive foregut system and the primitive aortic arch system. Yonsei Med J 2008 Feb 29;49(1):90-102.
              doi: 10.3349/ymj.2008.49.1.90pubmed: 18306475google scholar: lookup
            3. Figa FH, Yoo SJ, Burrows PE, Turner-Gomes S, Freedom RM. Horseshoe lung--a case report with unusual bronchial and pleural anomalies and a proposed new classification. Pediatr Radiol 1993;23(1):44-7.
              doi: 10.1007/BF02020221pubmed: 8469591google scholar: lookup
            4. Currarino G, Williams B. Causes of congenital unilateral pulmonary hypoplasia: a study of 33 cases. Pediatr Radiol 1985;15(1):15-24.
              doi: 10.1007/BF02387847pubmed: 3969292google scholar: lookup
            5. Hawass ND, Badawi MG, al-Muzrakchi AM, al-Sammarai AI, Jawad AJ, Abdullah MA, Bahakim H. Horseshoe lung: differential diagnosis. Pediatr Radiol 1990;20(8):580-4.
              doi: 10.1007/BF02129059pubmed: 2251000google scholar: lookup