Jyoji Handa

The accessory middle cerebral artery: Report of further two cases

The accessory middle cerebral artery may be found in about three per cent of brains at autopsy. It is rarely demonstrated by carotid angiography. The authors present two further angiographic demonstrations of this anomaly. They suggest that it is the artery of Heubner (lateral perforator of the anterior cerebral artery) that for some reason has become hypertrophied during development.

Traumatic aneurysm and arteriovenous fistula of the middle meningeal artery

The authors report two patients with torn middle meningeal arteries. In the first case a false aneurysm of the middle meningeal artery developed. This case appears to be unique because a false aneurysm of the superficial temporal artery was also present. In the second case an arteriovenous fistula developed between the middle meningeal artery and vein. Both patients recovered after surgical treatment. The authors stress the value of common carotid angiography in the management of these uncommon injuries.

Traumatic aneurysm of a peripheral cerebral artery: Case report

The authors report a case of traumatic false aneurysm of a peripheral branch of the anterior cerebral artery. The development of the aneurysm was observed by serial angiographies. Though the lesion is uncommon, the authors have observed three such cases in a period of a few months. They suggest that it is, therefore, not as rare as is usually thought. The mortality is high if the condition is unrecognised. However, survivals have been reported following surgical removal of the aneurysm.

Agenesis of the Corpus Callosum Associated with Multiple Developmental Anomalies of the Cerebral Arteries

According to Davidoff and Dyke (7), agenesis of the corpus callosum was first described in 1812 by Reil. The angiographic features were described by Maurer in 1940 (23); in his 33-year-old patient with extrapyramidal syndrome, however, a diagnosis had been previously established by air study. In 1952, Zellweger (30) reported the angiographic findings in 5 cases of agenesis of the corpus callosum and stressed the diagnostic significance of an abnormal course of the anterior cerebral artery and its branches, which was observed in 4 of his 5 cases. Subsequently, other angiographic features have been described by Van Epps (29), Sheldon and Peyman (27), Holman and MacCarty (13), and several others (5, 10, 12, 21, 22, 24, 25). Two cases of agenesis of the corpus callosum have been examined by cerebral angiography. The diagnosis was verified by cerebral pneumography in each instance, but the angiographic features seemed specific enough to permit the correct diagnosis on the basis of the angiograms alone. In one ...

Extravascular iodine in contrast enhancement with computed tomography.

SummaryUsing specimens obtained at operation, tissue-blood ratios of iodinated contrast material (iodine), and in some cases also those of red blood cell tracer (51Cr), were measured in 23 patients with various kinds of intracranial mass lesions. Results provided confirmatory evidence on the major role played by extravascular iodine in the positive enhancement effect with computed tomography.

Computed tomography in Moyamoya: Analysis of 16 cases

Abstract Sixteen patients with Moyamoya were studied by computed tomography (CT). In one patient, CT was normal. Cardinal findings in the noncontrast CT in the remaining 15 patients weis cortical atrophy, varying degrees of ventricular dilatation and intracerebral lucent areas. After contrast enhancement, no significant increase in the attenuation values was observed in the intracerebral lucent areas. In seven patients, a slight increase in density was noted in the basal ganglia; however, the increase in density was unexpectedly slight when the dense vascular networks opacified by angiographics were considered.

Dural-cortical arterial anastomosis as a collateral channel in carotid occlusive disease

The authors report four cases of occlusive disease of the internal carotid artery, which showed unique angiographic features of collateral circulation. Direct extracranial-cerebral arterial anastomoses have been observed between the middle meningeal artery, superficial temporal artery, occipital artery, and particularly the anterior falx artery and the recurrent meningeal branch of the ophthalmic artery and the cortical leptomeningeal arteries. ‘Retia mirabilia’ circulation in its original and strict sense has not been observed.

[Post-traumatic aneurysms of the leptomeningeal arteries (case report)].

SummaryIn one patient it was possible to observe the development and rupture of an aneurysm of a leptomeningeal artery following a severe head injury with intracranial haematoma by means of repeated carotid angiography. The traumatic origin of this aneurysm was confirmed by an operation and the histological findings. The problem of post-traumatic apoplexy is briefly discussed.ZusammenfassungBei einem Patienten kann die Entwicklung eines Aneurysmas an einer leptomeningealen Arterie nach einem schweren Schädeltrauma mit intrakraniellem Hämatom und schließlich dessen Ruptur durch wiederholte Carotisangiographien verfolgt werden. Operationsbefund und histologische Untersuchung sprechen für eine traumatische Aneurysmaentstehung. Die Frage der posttraumatischen Apoplexie wird kurz diskutiert.Bei einem Patienten kann die Entwicklung eines Aneurysmas an einer leptomeningealen Arterie nach einem schweren Schadeltrauma mit intrakraniellem Hamatom und schlieslich dessen Ruptur durch wiederholte Carotisangiographien verfolgt werden. Operationsbefund und histologische Untersuchung sprechen fur eine traumatische Aneurysmaentstehung. Die Frage der posttraumatischen Apoplexie wird kurz diskutiert.