Flow diversion via telescoping stent with Low-profile Visualized Intraluminal Support Junior for treatment of ruptured dissecting aneurysm located at proximal posterior inferior cerebellar artery

Dissecting aneurysm involving the posterior inferior cerebellar artery (PICA) are challenging because of its nature and anatomic relationship to medulla and lower cranial nerve. We introduce a case of ruptured dissecting aneurysm located at the proximal PICA treated with telescoping stents for flow diversion and dissection healing. A 49 years old female visited to the emergency room for ruptured dissecting aneurysm at right proximal PICA. Telescoping stent was deployed along the right vertebral artery to PICA covering the dissecting aneurysm bleb using two Low-profile Visualized Intraluminal Support Jr (LVIS Jr) stents. Three months follow up angiography revealed a disappearance of aneurysm bleb and healing of dissection by parent artery remodeling. Telescoping stent with LVIS Jr may be an effective treatment for dissecting aneurysm with small diameter (<2 mm) parent artery. Convenient navigation and targeted telescoping stent for minimizing metal coverage at perforating arteries are an advantage for this method.

Flow diversion via telescoping stent with Low-profile Visualized Intraluminal Support Junior for treatment of ruptured dissecting aneurysm located at proximal posterior inferior cerebellar artery

Dissecting aneurysm involving the posterior inferior cerebellar artery (PICA) are challenging because of its nature and anatomic relationship to medulla and lower cranial nerve. We introduce a case of ruptured dissecting aneurysm located at the proximal PICA treated with telescoping stents for flow diversion and dissection healing. A 49 years old female visited to the emergency room for ruptured dissecting aneurysm at right proximal PICA. Telescoping stent was deployed along the right vertebral artery to PICA covering the dissecting aneurysm bleb using two Low-profile Visualized Intraluminal Support Jr (LVIS Jr) stents. Three months follow up angiography revealed a disappearance of aneurysm bleb and healing of dissection by parent artery remodeling. Telescoping stent with LVIS Jr may be an effective treatment for dissecting aneurysm with small diameter (<2 mm) parent artery. Convenient navigation and targeted telescoping stent for minimizing metal coverage at perforating arteries are an advantage for this method.

Misdiagnosis of Spontaneous Intracranial Hypotension Presenting as Acute Mental Deterioration Caused by Unilateral Acute Subdural Hematoma: Case Report / 대한신경손상학회지

Spontaneous intracranial hypotension (SIH) is usually a benign disease which mostly present as orthostatic headache and resolves by conservative treatment or epidural blood patch. However, in severe cases large subdural hematoma or brain caudal herniation can progress to brain herniation and neurologic complications. We introduce a rare case of SIH which presented as acute mental deterioration with unilateral acute subdural hematoma. A 60 years old female visited to emergency room for stuporous mental change and unilateral acute subdural hematoma. Decompressive craniectomy and hematoma removal was performed to release brain herniation and increased intracranial pressure. There was temporary improvement of consciousness, but sustained leakage of cerebrospinal fluid (CSF) and caudal brain herniation worsened patient's condition. After recognizing that CSF leakage and hypovolemia was the underlying disease, emergent epidural blood patch and early cranioplasty was performed. After treatment CSF volume was normalized and patient recovered completely without neurologic deficits. Acute mental deterioration with unilateral subdural hematoma is a rare presentation for SIH. Treatment strategy for subdural hematoma with concomitant SIH patients, should be planned carefully with concerns to CSF hypovolemia and intracranial pressure.

Spontaneous Anterior Cerebral Artery Dissection Presenting with Simultaneous Subarachnoid Hemorrhage and Cerebral Infarction in a Patient with Multiple Extracranial Arterial Dissections

Simultaneous subarachnoid hemorrhage and infarction is a quite rare presentation in a patient with a spontaneous dissecting aneurysm of the anterior cerebral artery. Identifying relevant radiographic features and serial angiographic surveillance as well as mode of clinical manifestation, either hemorrhage or infarction, could sufficiently determine appropriate treatment. Enlargement of ruptured aneurysm and progressing arterial stenosis around the aneurysm indicates impending risk of subsequent stroke. In this setting, prompt treatment with stent-assisted endovascular embolization can be a reliable alternative to direct surgery. When multiple arterial dissections are coexistent, management strategy often became complicated. However, satisfactory clinical results can be obtained by acknowledging responsible arterial site with careful radiographic inspection and antiplatelet medication.

Endovascular Embolization of a de Novo True Posterior Communicating Artery Aneurysm 23 years After Surgical Clipping of an Ipsilateral Posterior Communicating Artery-internal Carotid Artery Aneurysm: A Case Report / 대한뇌혈관외과학회지

We describe a true posterior communicating artery (PCoA) aneurysm, which is an uncommon variant of intracranial aneurysm that was treated by endosaccular embolization. A 64-year-old woman was admitted for management of an unruptured left PCoA aneurysm. She had undergone microsurgical clipping of an ipsilateral internal carotid artery (ICA)-PCoA aneurysm 23 years prior to the current presentation. Angiography showed a saccular aneurysm 3 mm distal to the junction of the ICA and the fetal-type PCoA arising on the opposite side of the vessel to that of the previous clipping. Endovascular embolization was performed to occlude the lumen of the aneurysm while preserving the patency of the PCoA. Based on angiograms, hemodynamic stress seems to be the most feasible explanation for the de novo development of an aneurysm at the first acute bend within the PCoA in our patient. For this anatomical reason, endosaccular coil deployment was possible without the use of a balloon or stent.