Subject(s)
Arteriovenous Fistula/diagnosis , Carotid Arteries , Cavernous Sinus , Cerebral Veins , Cerebrovascular Disorders/diagnosis , Eye Diseases/diagnosis , Adult , Arteries/pathology , Arteriovenous Fistula/pathology , Arteriovenous Fistula/therapy , Carotid Arteries/pathology , Cavernous Sinus/pathology , Cerebral Veins/pathology , Cerebrovascular Disorders/pathology , Cerebrovascular Disorders/therapy , Diagnosis, Differential , Eye Diseases/pathology , Female , Humans , Male , Middle AgedABSTRACT
Percutaneous embolotherapy was carried out successfully in a 79 year old woman with a 56% shunt through a single pulmonary arteriovenous malformation.
Subject(s)
Arteriovenous Malformations/therapy , Embolization, Therapeutic/methods , Pulmonary Artery/abnormalities , Pulmonary Veins/abnormalities , Aged , Arteriovenous Malformations/diagnostic imaging , Female , Humans , Pulmonary Artery/diagnostic imaging , Pulmonary Veins/diagnostic imaging , RadiographyABSTRACT
The CT scans of 10 traumatized patients with demonstrable ocular injuries were reviewed. The CT findings were correlated with the clinical findings in each case. CT manifestations of a variety of ocular and orbital injuries are reported and a systematic approach to the CT evaluation of ocular trauma is presented.
Subject(s)
Eye Injuries/diagnostic imaging , Orbital Fractures/diagnostic imaging , Skull Fractures/diagnostic imaging , Tomography, X-Ray Computed , Adult , Child, Preschool , Eye Diseases/diagnostic imaging , Eye Foreign Bodies/diagnostic imaging , Female , Hematoma/diagnostic imaging , Humans , Male , Middle Aged , Optic Nerve Injuries , Vitreous Body/injuries , Wounds, Gunshot/diagnostic imagingABSTRACT
A traumatic fistula of the left vertebral artery to vertebral and epidural veins with an expanding suboccipital false aneurysm was trapped by endovascular occlusion with detachable balloons. The lesion was not amenable to treatment using the left vertebral artery alone for access. Distal trapping was accomplished by catheterizing the (contralateral) right vertebral artery and placing the balloon retrograde into the distal segment of the left vertebral artery. This maneuver extends the range of vertebral artery lesions for which detachable balloons, either alone or as an adjunct to operation, can be used.
Subject(s)
Angioplasty, Balloon , Arteriovenous Fistula/therapy , Vertebral Artery , Wounds and Injuries/complications , Acute Disease , Adult , Arteriovenous Fistula/diagnostic imaging , Arteriovenous Fistula/etiology , Cerebral Angiography , Humans , Male , Tomography, X-Ray ComputedSubject(s)
Embolization, Therapeutic/methods , Hemangioma/therapy , Liver Neoplasms/therapy , Polyvinyl Alcohol/administration & dosage , Celiac Artery/diagnostic imaging , Female , Hemangioma/diagnostic imaging , Hemangioma/pathology , Hepatic Artery/diagnostic imaging , Humans , Infant , Liver Neoplasms/diagnostic imaging , Liver Neoplasms/pathology , Male , RadiographySubject(s)
Arteriovenous Fistula/therapy , Embolization, Therapeutic/instrumentation , Animals , Arteriovenous Fistula/diagnostic imaging , Carotid Artery, Internal/diagnostic imaging , Carotid Artery, Internal/surgery , Catheterization , Dogs , Humans , Jugular Veins/diagnostic imaging , Jugular Veins/surgery , Radiography , SteelABSTRACT
Therapeutic embolization is an effective and relatively safe method for managing many cases of head and neck trauma. In the last 5 years, 78 traumatic vascular lesions--10 arterial transections and 68 arteriovenous fistula--were treated by intravascular embolization at four medical centers. Selection of embolic materials is discussed and different types of lesions are illustrated. Treatment was successful in every instance. Complications were limited to one case of cerebral infarction and two cases of temporary oculomotor weakness. The indications for embolization have widened beyond life-threatening hemorrhage alone, and continued improvement in techniques and embolic agents should see an increased use of this form of treatment.
Subject(s)
Arteriovenous Fistula/therapy , Carotid Artery Diseases/therapy , Cavernous Sinus , Cerebral Arteries/injuries , Embolization, Therapeutic , Jugular Veins , Adult , Craniocerebral Trauma/therapy , Humans , Male , Neck Injuries , Wounds, Gunshot/therapy , Wounds, Stab/therapySubject(s)
Carotid Artery Diseases/diagnostic imaging , Fistula/diagnostic imaging , Trigeminal Nerve/blood supply , Adult , Aged , Angiography , Arteries/abnormalities , Carotid Artery Diseases/complications , Cerebral Angiography , Female , Fistula/complications , Humans , Intracranial Aneurysm/complications , Intracranial Aneurysm/congenital , MaleABSTRACT
Radiologic imaging techniques play an important role in the diagnosis and management of neurocysticercosis. Cysticercal involvement of the central nervous system can be classified as parenchymal, ventricular, meningo-cisternal, spinal, and mixed, depending upon the site of involvement. Computerized tomographic scanning has replaced most of the previously used techniques for assessing parenchymal disease and diagnosis has been greatly improved. Ventriculography and myelography are still useful in cases of intraventricular and spinal disease respectively.
Subject(s)
Central Nervous System Diseases/diagnostic imaging , Cysticercosis/diagnostic imaging , Adolescent , Adult , Calcinosis/diagnostic imaging , Cerebral Ventricles , Cerebral Ventriculography , Female , Humans , Male , Meningitis/diagnostic imaging , Middle Aged , Myelography , Radiographic Image Enhancement , Tomography, X-Ray ComputedSubject(s)
Brain Diseases/diagnostic imaging , Cerebral Ventricles/parasitology , Cysticercosis/diagnostic imaging , Pneumoencephalography/adverse effects , Adult , Brain Diseases/parasitology , Cerebral Ventriculography , Female , Humans , Hydrocephalus/etiology , Hydrocephalus/parasitology , Male , Metrizamide , Rupture , Tomography, X-Ray ComputedABSTRACT
A 5-year-old boy with tetralogy of Fallot, near-atresia of the right ventricular outflow tract and large collateral arteries to the lungs underwent an infundibulectomy without closure of the ventricular septal defect. Further surgery required preliminary reduction of the collateral circulation. The collateral arteries were successfully occluded by metrizimide-filled balloons. There was no change in arterial oxygen saturation, nor were there any complications. This new technique has significant advantages over existing alternatives.
Subject(s)
Catheterization/instrumentation , Collateral Circulation , Lung/blood supply , Tetralogy of Fallot/surgery , Aortography , Child, Preschool , Embolization, Therapeutic , Humans , Male , Tetralogy of Fallot/diagnostic imagingSubject(s)
Catheterization/methods , Cerebrovascular Circulation , Hemostasis, Surgical/methods , Intracranial Arteriovenous Malformations/surgery , Preoperative Care , Adolescent , Female , Hemostasis, Surgical/instrumentation , Humans , Intracranial Arteriovenous Malformations/physiopathology , Male , Middle AgedABSTRACT
Thirty-one cases of acute posterior fossa infarcts are reported. CT evidence of obliterated posterior fossa cisterns and hydrocephalus indicates a grave prognosis due to brainstem compression. Progressive obliteration of posterior fossa cisterns may be used as an indicator for surgical decompression. Patients with intact posterior fossa cisterns had good recoveries without surgical treatment. CT can be used to diagnose the very early phase of an acute posterior fossa infarct and has prognostic value in predicting the outcome.
Subject(s)
Cerebral Infarction/diagnostic imaging , Cranial Fossa, Posterior/diagnostic imaging , Skull/diagnostic imaging , Tomography, X-Ray Computed , Adult , Aged , Cerebral Angiography , Cerebral Infarction/pathology , Cranial Fossa, Posterior/blood supply , Female , Humans , Male , Middle Aged , Prognosis , Time FactorsABSTRACT
The use of a new detachable balloon for renal artery occlusion is described. Successful treatment of renal lesions in 5 patients, including 2 tumors, 2 arteriovenous fistulas and 1 case of malignant hypertension with renal failure, is reported.
Subject(s)
Embolization, Therapeutic/instrumentation , Renal Artery Obstruction/therapy , Adult , Angiography , Arteriovenous Fistula/complications , Female , Humans , Hypertension, Malignant/complications , Kidney Neoplasms/complications , Male , Middle Aged , Renal Artery Obstruction/diagnostic imaging , Renal Artery Obstruction/etiologyABSTRACT
A unique case is described in which a patient with a primary cerebral neoplasm was found to have bilateral aplasia of the internal carotid artery that presented with an eroded sella turcica mimicking an intrasellar mass. The embryologic origin of this anomaly is discussed, and the literature is reviewed.
Subject(s)
Carotid Artery, Internal/abnormalities , Sella Turcica/pathology , Brain Neoplasms/complications , Carotid Arteries/diagnostic imaging , Carotid Artery, Internal/embryology , Female , Humans , Middle Aged , Radiography , Sella Turcica/diagnostic imagingABSTRACT
A new, detachable, silastic balloon for occlusion of arteries and fistulae is described. The balloon is filled with water-soluble contrast material, is flow-directed into the desired position, and detached using a set of coaxial catheters.
Subject(s)
Catheterization/instrumentation , Embolization, Therapeutic/instrumentation , Arteriovenous Malformations/therapy , Contrast Media , Humans , Silicone ElastomersABSTRACT
Embolization of very vascular meningiomas prior to operation will reduce the loss of blood during operation. The technique of preoperative embolization is discussed, and 11 cases are presented.