Delayed extensive brain edema caused by the growth of a giant basilar apex aneurysm treated with basilar artery obliteration: a case report. 2020

Daniel García-Pérez, and Irene Panero, and Carla Eiriz, and Luis Miguel Moreno, and Pablo M Munarriz, and Igor Paredes, and Alfonso Lagares, and José F Alén
Department of Neurosurgery, University Hospital 12 de Octubre, Avda de Córdoba s/n, 28041, Madrid, Spain. dgp.neurosurgery@gmail.com.

BACKGROUND Partially thrombosed giant aneurysms at the basilar apex (BA) artery are challenging lesions with a poor prognosis if left untreated. Here we describe a rare case of extensive brain edema after growth of a surgically treated and thrombosed giant basilar apex aneurysm. METHODS We performed a proximal surgical basilar artery occlusion on a 64-year-old female with a partially thrombosed giant BA aneurysm. MRI showed no ischemic lesions but showed marked edema adjacent to the aneurysm. She had a good recovery, but 3 months after surgical occlusion, her gait deteriorated together with urinary incontinence and worsening right hemiparesis. MRI showed that the aneurysm had grown and developed intramural hemorrhage, which caused extensive brain edema and obstructive hydrocephalus. She was treated by a ventriculoperitoneal shunt placement. Follow-up MRI showed progressive brain edema resolution, complete thrombosis of the lumen and shrinkage of the aneurysm. At 5 years follow-up the patient had an excellent functional outcome. CONCLUSIONS Delayed growth of a surgically treated and thrombosed giant aneurysm from wall dissection demonstrates that discontinuity with the initial parent artery does not always prevent progressive enlargement. The development of transmural vascular connections between the intraluminal thrombus and adventitial neovascularization by the vasa vasorum on the apex of the BA seems to be a key event in delayed aneurysm growth. Extensive brain edema might translate an inflammatory edematous reaction to an abrupt enlargement of the aneurysm.

UI MeSH Term Description Entries
D008279 Magnetic Resonance Imaging Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques. Chemical Shift Imaging,MR Tomography,MRI Scans,MRI, Functional,Magnetic Resonance Image,Magnetic Resonance Imaging, Functional,Magnetization Transfer Contrast Imaging,NMR Imaging,NMR Tomography,Tomography, NMR,Tomography, Proton Spin,fMRI,Functional Magnetic Resonance Imaging,Imaging, Chemical Shift,Proton Spin Tomography,Spin Echo Imaging,Steady-State Free Precession MRI,Tomography, MR,Zeugmatography,Chemical Shift Imagings,Echo Imaging, Spin,Echo Imagings, Spin,Functional MRI,Functional MRIs,Image, Magnetic Resonance,Imaging, Magnetic Resonance,Imaging, NMR,Imaging, Spin Echo,Imagings, Chemical Shift,Imagings, Spin Echo,MRI Scan,MRIs, Functional,Magnetic Resonance Images,Resonance Image, Magnetic,Scan, MRI,Scans, MRI,Shift Imaging, Chemical,Shift Imagings, Chemical,Spin Echo Imagings,Steady State Free Precession MRI
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D001929 Brain Edema Increased intracellular or extracellular fluid in brain tissue. Cytotoxic brain edema (swelling due to increased intracellular fluid) is indicative of a disturbance in cell metabolism, and is commonly associated with hypoxic or ischemic injuries (see HYPOXIA, BRAIN). An increase in extracellular fluid may be caused by increased brain capillary permeability (vasogenic edema), an osmotic gradient, local blockages in interstitial fluid pathways, or by obstruction of CSF flow (e.g., obstructive HYDROCEPHALUS). (From Childs Nerv Syst 1992 Sep; 8(6):301-6) Brain Swelling,Cerebral Edema,Cytotoxic Brain Edema,Intracranial Edema,Vasogenic Cerebral Edema,Cerebral Edema, Cytotoxic,Cerebral Edema, Vasogenic,Cytotoxic Cerebral Edema,Vasogenic Brain Edema,Brain Edema, Cytotoxic,Brain Edema, Vasogenic,Brain Swellings,Cerebral Edemas, Vasogenic,Edema, Brain,Edema, Cerebral,Edema, Cytotoxic Brain,Edema, Cytotoxic Cerebral,Edema, Intracranial,Edema, Vasogenic Brain,Edema, Vasogenic Cerebral,Swelling, Brain
D002532 Intracranial Aneurysm Abnormal outpouching in the wall of intracranial blood vessels. Most common are the saccular (berry) aneurysms located at branch points in CIRCLE OF WILLIS at the base of the brain. Vessel rupture results in SUBARACHNOID HEMORRHAGE or INTRACRANIAL HEMORRHAGES. Giant aneurysms (>2.5 cm in diameter) may compress adjacent structures, including the OCULOMOTOR NERVE. (From Adams et al., Principles of Neurology, 6th ed, p841) Aneurysm, Cerebral,Aneurysm, Intracranial,Basilar Artery Aneurysm,Berry Aneurysm,Brain Aneurysm,Cerebral Aneurysm,Giant Intracranial Aneurysm,Mycotic Aneurysm, Intracranial,Aneurysm, Anterior Cerebral Artery,Aneurysm, Anterior Communicating Artery,Aneurysm, Basilar Artery,Aneurysm, Middle Cerebral Artery,Aneurysm, Posterior Cerebral Artery,Aneurysm, Posterior Communicating Artery,Anterior Cerebral Artery Aneurysm,Anterior Communicating Artery Aneurysm,Middle Cerebral Artery Aneurysm,Posterior Cerebral Artery Aneurysm,Posterior Communicating Artery Aneurysm,Aneurysm, Berry,Aneurysm, Brain,Aneurysm, Giant Intracranial,Aneurysm, Intracranial Mycotic,Aneurysms, Basilar Artery,Aneurysms, Berry,Aneurysms, Brain,Aneurysms, Cerebral,Aneurysms, Giant Intracranial,Aneurysms, Intracranial,Aneurysms, Intracranial Mycotic,Artery Aneurysm, Basilar,Artery Aneurysms, Basilar,Basilar Artery Aneurysms,Berry Aneurysms,Brain Aneurysms,Cerebral Aneurysms,Giant Intracranial Aneurysms,Intracranial Aneurysm, Giant,Intracranial Aneurysms,Intracranial Aneurysms, Giant,Intracranial Mycotic Aneurysm,Intracranial Mycotic Aneurysms,Mycotic Aneurysms, Intracranial
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001488 Basilar Artery The artery formed by the union of the right and left vertebral arteries; it runs from the lower to the upper border of the pons, where it bifurcates into the two posterior cerebral arteries. Arteries, Basilar,Artery, Basilar,Basilar Arteries
D013927 Thrombosis Formation and development of a thrombus or blood clot in BLOOD VESSELS. Atherothrombosis,Thrombus,Blood Clot,Blood Clots,Thromboses
D017287 Ventriculoperitoneal Shunt Surgical creation of a communication between a cerebral ventricle and the peritoneum by means of a plastic tube to permit drainage of cerebrospinal fluid for relief of hydrocephalus. (From Dorland, 28th ed) Ventriculo-peritoneal Shunt,Shunt, Ventriculo-peritoneal,Shunt, Ventriculoperitoneal,Shunts, Ventriculo-peritoneal,Shunts, Ventriculoperitoneal,Ventriculo peritoneal Shunt,Ventriculo-peritoneal Shunts,Ventriculoperitoneal Shunts

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