Vascular - Long-Term Aneurysm Recurrence After Microsurgical Clipping

This episode delves into the long-term durability of microsurgical clipping for unruptured intracranial aneurysms, drawing insights from a retrospective cohort study published in Neurologia medico-chirurgica in 2026. Analyzing data from 657 patients treated between 2003 and 2025, the abstract reveals exceptionally low annual recurrence rates of 0.156% per patient-year, with cumulative recurrence-free rates remaining high even at 15 years. The study highlights specific aneurysm locations, such as those involving the internal carotid artery with the anterior choroidal or posterior communicating arteries, as carrying a statistically significant higher risk. Furthermore, it identifies distinct patterns of recurrence, with those requiring preservation of perforating arteries demonstrating a greater propensity for later regrowth. These findings underscore the importance of sustained surveillance, particularly for certain anatomical sites and clipping techniques, to ensure optimal patient outcomes. This content is for informational purposes only and does not constitute medical advice.