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Giant Aneurysms: Not So Giant in Behavior
Parthasarathi Datta1, Shuvankar Mukherjee2, Anindya Mukherjee3
1Department of Neurosurgery, Nil Ratan Sircar Medical College, Kolkata, West Bengal, India.
Background:
Giant intracranial aneurysms (GIAs) are very complex in their behavior and treatment procedure. There are various modalities of treatment. The annual rupture rate of GIA (6%) is higher than that of small aneurysms (1-3%). Neurosurgeons handle these aneurysms during operations.
Objective:
We tried to analyze the intraoperative rupture rate (IRR) of GIA in relation to small aneurysms. IRR is concerned with the rupture of the aneurysms during operative handling.
Materials And Methods:
For conducting the study, we compared the IRR of 7 GIAs and 45 small aneurysms during a span of 10 years. All the operations were performed by the same team and the same principal surgeon. IRR was compared by statistical analysis.
Result:
Z-test was done to compare the two rates: Z = 0.68 and P = 0.49. According to our study, the IRR of GIA is not statistically different from small aneurysms. The IRR of GIA is not higher because of three factors which we have analyzed: 1) layers of intraaneurysmal thrombus, 2) fibrin deposition on the aneurysm wall, and 3) blocked neck of the aneurysm by thrombus.
Conclusion:
The IRR of GIA is not different from small aneurysms.
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