Artikel
Cerebral cavernous malformations (CCM) – the second symptomatic haemorrhage – long-term follow-up
Zerebrale Kavernome – das zweite Blutungsereignis im Langzeitverlauf
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Veröffentlicht: | 8. Mai 2019 |
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Gliederung
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Objective: Risk for recurrent symptomatic hemorrhage in CCM is an important factor in decision making/consultation of patients. In this report, we analyze the risk and time pattern of re-hemorrhage events after a first initial bleeding.
Methods: We performed a cross-sectional study based on our uni-center CCM database (2003–2018), analyzing the further follow-up of patients with a first symptomatic hemorrhage. Kaplan-Meier and survival analysis were performed to estimate cumulative re-bleeding risks and time distribution of re-hemorrhage events (patients undergoing surgery were excluded).
Results: We included a consecutive series of n=461 (48% of n=1004) qualified patients. 114 (24.6%) suffered a second hemorrhage. Annual risk of hemorrhage was 11%, 12%, 6%, 7%, 6%, 11%, 2%, 5%, 0%, 0% in the first ten years, respectively. 5-year cumulative risk of re-hemorrhage was 42%, ten-year risk was 60%. Independent risk factor for re-hemorrhage was brainstem location.
Conclusion: While absolute cumulative re-bleeding risk estimation may be exaggerated by the high level of exclusion due to surgical treatment, our results reflect a “wavelike” time pattern of re-hemorrhages which gradually declines after two peaks (1st and 5th year) and reach a plateau at year 8.