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Sudden unexpected death due to coronary giant cell arteritis
Insights
A rare case of sudden cardiac death in a young woman was linked to giant cell arteritis affecting the coronary artery. This finding highlights an unusual presentation of the condition.
Area of Science:
- Cardiovascular Pathology
- Rheumatology
- Autopsy Medicine
Background:
- Giant cell arteritis (GCA) is a systemic vasculitis typically affecting older individuals.
- GCA commonly involves large and medium-sized arteries, particularly the aorta and its branches.
- Sudden cardiac death is an uncommon initial presentation of GCA.
Observation:
- A previously healthy 19-year-old woman experienced sudden severe chest pain and died within two hours.
- Autopsy revealed thrombosis of the left main coronary artery.
- Microscopic examination showed eccentric necrotizing arteritis with giant cells in the coronary artery and lymphocytic infiltration in the aorta.
Findings:
- The cause of death was attributed to necrotizing arteritis of the left main coronary artery, leading to thrombus formation and sudden cardiac death.
- The arteritis involved both the coronary artery and the aorta, consistent with a rare, localized form of GCA.
- Histological findings included giant cells, lymphocytes, and histiocytes.
Implications:
- This case underscores the potential for GCA to manifest atypically in younger individuals.
- It highlights the importance of considering vasculitis in the differential diagnosis of sudden cardiac death, even in the absence of typical GCA symptoms.
- The findings suggest that isolated coronary artery involvement by GCA can be rapidly fatal.
Abstract:
A previously healthy 19-year-old woman died two hours after the sudden onset of severe chest pain. The only gross abnormality seen at the time of autopsy was thrombosis of the left main coronary artery. Microscopic examination of the artery showed eccentric necrotizing arteritis with giant cells, associated with the thrombus. The aorta was infiltrated with lymphocytes, histiocytes, and an occasional giant cell. Sudden cardiac death as the initial manifestation of a giant cell arteritis that involves only the coronary artery and aorta is rare.