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Published on: September 28, 2015
[An exceptional etiology of left ventricular aneurysm: type AA amyloidosis]
D Détaint1, D Messika-Zeitoun, P Goube
1Service de cardiologie, hôpital Tenon, Paris Inserm U460, hôpital Xavier-Bichat, 46, rue Henri-Huchard, 75018 Paris.
Insights
This study details a rare left ventricular aneurysm in a young patient from Zaire, linked to tuberculosis and AA amyloidosis. Diagnosis was confirmed via histology, highlighting a potential link between debilitating conditions and cardiac aneurysms.
Area of Science:
- Cardiology
- Pathology
- Infectious Diseases
Background:
- Left ventricular aneurysms (LVA) are typically associated with myocardial infarction.
- However, LVAs can occur without coronary artery disease, suggesting diverse etiologies.
- Idiopathic LVAs have been noted in African populations, with tuberculosis implicated.
Observation:
- A case of a young patient from Zaire presenting with LVA.
- The patient had concurrent ganglionic tuberculosis complicated by AA amyloidosis.
- Histological examination revealed amyloid deposits in intra-myocardial arterioles.
Findings:
- The histological findings supported a diagnosis of LVA secondary to tuberculosis-induced AA amyloidosis.
- Amyloid deposition in myocardial arterioles was identified as a key pathological feature.
- The case highlights a rare etiological pathway for LVA.
Implications:
- This case expands the known causes of left ventricular aneurysms.
- It underscores the importance of considering systemic inflammatory and infectious diseases, like tuberculosis, in the etiology of LVA.
- Surgical management is generally recommended for LVAs, despite diagnostic challenges.
Abstract:
Left ventricular aneurysms most often occur in the course of myocardial infarction. In rare cases they can be detected when the coronary network is devoid of any lesions. The aetiology is therefore multiple and dependent on the context. One aetiology seems less exceptional and concerns idiopathic aneurysms encountered in the African population, where the role of a "debilitating condition" such as tuberculosis has been evoked. We report the case history of a young patient from Zaire with a left ventricular aneurysm discovered in association with ganglionic tuberculosis complicated by AA amyloidosis. Histological analysis allowed the aetiological diagnosis to be established. Aneurysmal dilatation of the left ventricle was reported in the presence of amyloid deposits at the intra-myocardial arteriole level, whereas the context suggested a tubercular role. In spite of the difficulty of establishing a precise aetiological diagnosis, there seems to exist a consensus for surgical management.
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