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[Polymyalgia rheumatica. Clinical histological study of 46 cases]
Abstract:
The nosological relationship between Polymyalgia rheumatica (PMR) and Cranial Arteritis has been studied by comparing 46 cases of PMR with 21 cases of cranial arteritis. Symptoms consistent with cranial arteritis were present in 83% of the PMR patients, but only 32% showed giant cell arteritis in the biopsy of temporal arteries. The difference is explained by the segmental involvement of the arteritis. The patients with cranial arteritis had symptoms of PMR in 48%. It is concluded, that PMR and cranial arteritis are both manifestations of the same disease. Temporary signs of generalized arteritis seem to occur often in PMR and may lead to fatal complications. PMR may last up to ten years. Because of the potential fatality of this disease, a temporal artery biopsy is indicated in every suspicious case in order to provide a sound basis for the required long term therapy with corticosteroids.
Insights
Polymyalgia rheumatica (PMR) and cranial arteritis are manifestations of the same disease. Early diagnosis via temporal artery biopsy is crucial for managing PMR, which can last a decade and carry fatal risks.
Area of Science:
- Rheumatology
- Vascular Inflammation
Context:
- Investigating the nosological link between Polymyalgia rheumatica (PMR) and cranial arteritis.
- Comparing clinical presentations and biopsy findings in 46 PMR patients and 21 cranial arteritis patients.
Purpose:
- To determine if PMR and cranial arteritis represent different manifestations of a single underlying disease process.
- To elucidate the diagnostic criteria and management implications arising from their shared pathology.
Summary:
- 83% of PMR patients exhibited symptoms suggestive of cranial arteritis, though only 32% had positive temporal artery biopsies, attributed to segmental arteritis.
- Conversely, 48% of cranial arteritis patients presented with PMR symptoms.
- The findings strongly suggest PMR and cranial arteritis are indeed related manifestations of the same vasculitic condition.
Impact:
- Highlights the potential for severe, even fatal, systemic arteritis complications in PMR patients.
- Recommends temporal artery biopsy in suspected cases to guide long-term corticosteroid therapy.
- Emphasizes that PMR can be a prolonged condition, potentially lasting up to ten years, necessitating vigilant monitoring and treatment.