Etame Arnold B, Bentley J Nicole, Pandey Aditya S
Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA.
BMJ Case Rep. 2013 Jun 12;2013:bcr2013010134. doi: 10.1136/bcr-2013-010134.
Acute expansion of an intracranial aneurysm is an extremely rare event. In this report, we describe the unusual radiographic documentation of acute expansion of a posterior communicating artery (PCOM) aneurysm from 4 to 8 mm, resulting in complete oculomotor nerve palsy. A 40-year-old man was admitted to our institution with a 3-week history of persistent occipital headaches but was otherwise neurologically intact. CT angiography demonstrated a 4 mm left PCOM aneurysm. Digital subtraction angiography performed several hours following presentation demonstrated an expansion in aneurysm size to 8 mm with new-onset complete oculomotor nerve palsy. The aneurysm was successfully obliterated by clip ligation. Although growth in aneurysm size is often a progressive phenomenon, acute expansions of aneurysms can occur.
颅内动脉瘤急性扩张是一种极其罕见的事件。在本报告中，我们描述了一例后交通动脉（PCOM）动脉瘤从4毫米急性扩张至8毫米的罕见影像学记录，该扩张导致动眼神经完全麻痹。一名40岁男性因持续枕部头痛3周入院，其他神经系统检查未见异常。CT血管造影显示左侧PCOM动脉瘤大小为4毫米。就诊数小时后进行的数字减影血管造影显示动脉瘤大小扩张至8毫米，并出现新发的动眼神经完全麻痹。通过夹闭术成功闭塞了动脉瘤。尽管动脉瘤大小的增长通常是一个渐进性过程，但动脉瘤急性扩张也可能发生。
