Saccular Aneurysms of the Proximal (M1) Segment of the Middle Cerebral Artery
| Autor: | Shigekiyo Fujita, Yoshiteru Shose, Kohkichi Hosoda, Seiji Hamano, Tetsuro Kawaguchi |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Adult
Male medicine.medical_specialty Subarachnoid hemorrhage Temporal lobe medicine.artery medicine Humans cardiovascular diseases Aged Aged 80 and over Rupture Spontaneous business.industry Incidence Incidence (epidemiology) Intracranial Aneurysm Cerebral Arteries Middle Aged Subarachnoid Hemorrhage medicine.disease Saccular aneurysm Surgery Treatment Outcome medicine.anatomical_structure Frontal lobe Middle cerebral artery cardiovascular system Inferior wall Female Neurology (clinical) Tomography X-Ray Computed business Artery |
| Zdroj: | Neurosurgery. 36:441-446 |
| ISSN: | 0148-396X |
| DOI: | 10.1227/00006123-199503000-00001 |
| Popis: | We report A series of 20 consecutive patients with 21 saccular aneurysms of the proximal (M1) segment of the middle cerebral artery. The incidence of M1 aneurysms was 3.0% among 660 patients with intracranial aneurysms and 12.9% among 155 patients with middle cerebral artery aneurysms in our center. Of the 20 patients, 2 were men and 18 were women. The aneurysms were classified into two types: the superior wall type (9 cases), arising at the origin of the lenticulostriate or fronto-orbital artery, and the inferior wall type (12 cases), arising at the origin of the early temporal branches. Twelve (60%) patients had ruptured M1 aneurysms. The incidence of multiple aneurysms was high (nine patients, 45%), and M1 aneurysms were responsible for subarachnoid hemorrhage in four patients. Of 14 M1 aneurysms greater than 5 mm in diameter, 11 (78.6%) ruptured. In contrast, only one (14.3%) of seven small (< or = 5 mm) aneurysms ruptured. In 12 patients with ruptured M1 aneurysms, intracerebral hematomas were recognized in 6 (50%). Intracerebral hematomas by the superior wall M1 aneurysms were located in the frontal lobe, and those by the inferior wall M1 aneurysms were in the temporal lobe. Fifteen patients (75%) made a useful recovery 6 months after surgery. Four patients (20%), who were in poor grade condition preoperatively, remained severely disabled. One patient died of sepsis 2 months after she recovered well from the operation. Special attention to the lenticulostriate arteries to avoid injury is critical for successful surgical treatment. |
| Databáze: | OpenAIRE |
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