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Biomedical subjects

Y Numaguchi

Publications and source records attributed to Y Numaguchi.

At least 91 records · Page 5Linked to original sources
PubMed1988

Giant aneurysms of bilateral internal carotid arteries in a child.

Aneurysms in the petrous or cavernous portion of the internal carotid artery in childhood are extremely rare. Only two such cases have been previously reported. We present a case of bilateral giant intrapetrous aneurysms in a young female. CT was especially helpful in evaluating the absolute size of these aneurysms. This case is unique in that we demonstrated the temporal evolution of internal carotid aneurysms on follow-up angiography.

Carotid Artery, Internal↗
PubMed1988

Periosteal chondroma of the cervical spine: one more cause of neural foramen enlargement.

A case of cervical periosteal chondroma presenting with an enlarged neural foramen is described. Review of the literature showed that cervical chondromas are rare but that their characteristic clinical and computed tomographic findings aid in their diagnosis. The computed tomographic findings of two previously reported cases of cervical periosteal chondroma resembled those of the present case. On computed tomographic scanning, an iso-or high-density mass containing stippled calcifications and originating in a posterior cervical neural arch was observed in all three cases. Extensive spinal canal and extradural involvement was observed in five of the seven reported cases, including the one reported here.

Bone Neoplasms↗
PubMed1988

Gliomas with dural invasion: computed tomography and angiography.

This report is a review of the findings of computed tomography and angiography of eight supratentorial gliomas with dural invasion. Computed tomography revealed localized increases in the thickness of ring enhancements at the sites of dural invasion in four cases, which was attributed to increased blood supplies by the meningeal vessels. Angiographically, feeders from the meningeal vessels entered the tumors mostly through relatively broad areas of tumor-dura attachment. A sunburst type of neovascularity from a meningeal artery was seen in only one case. In most such cases the differential diagnosis from meningioma was possible by the computed tomographic and angiographic findings. Selective external carotid angiography was the most important examination for diagnosing dural invasion by gliomas.

Astrocytoma↗
PubMed1987

Eosinophilic granuloma of the cervical spine without vertebrae plana.

A case of eosinophilic granuloma of the cervical spine is described. Cervical radiography and computed tomography demonstrated destruction of pedicles and posterior portions of the neural arch. Vertebral body heights were essentially preserved and the importance of this finding is underscored. Computed tomography played an important role in evaluating the extent of this disease.

Cervical Vertebrae↗
PubMed1986

Neurosarcoidosis involving optic nerves and leptomeninges: computed tomography findings.

A case of neurosarcoidosis with extensive involvement of both optic nerves and intracranial leptomeninges is reported. Computed tomography demonstrates diffuse enlargement of the optic nerves and extensive nodular contrast medium enhancement of the leptomeninges of the anterior and middle cranial fossae extending into the frontal convexity. Only one such case has been previously reported in the computed tomography literature. Marked therapeutic response was obtained clinically and demonstrated on a follow-up computed tomography after therapy with corticosteroids. Differential diagnosis of computed tomography findings is discussed.

Adult↗
PubMed1984

Percutaneous transluminal angioplasty of the carotid artery. Its application to post surgical stenosis.

The successful dilatation of postsurgical concentric stenosis of an internal carotid artery using percutaneous transluminal angioplasty (PTA) is reported here. Only one such case has been previously documented. Review of the literature disclosed 16 patients who received transluminal angioplasty for stenosis of carotid arteries by percutaneous or open arteriotomy techniques. The authors feel that PTA may be the treatment of choice for postoperative concentric stenosis of a short segment of the carotid artery as opposed to surgical repair.

Angioplasty, Balloon↗
PubMed1984

Blood-brain barrier disruption due to cerebral arteriography: CT findings.

Computed tomography was performed in two cases of blood-brain barrier (BBB) disruption due to cerebral arteriography. The first case showed diffuse contrast enhancement in the right frontotemporal region in the distribution of the middle cerebral artery; in the second case patchy contrast enhancement in both gray and white matter of both hemispheres was demonstrated. The possible mechanism for BBB disruption in these patients is discussed.

Aged↗
PubMed1984

Neuroimaging of the spine.

This article addresses the subject of available technology and techniques of neuroimaging of the spine. It also reviews broad areas of neuropathology such as congenital anomalies, degenerative joint disease, the postoperative spine, disorders of the spinal cord, neoplasia, trauma, and infection. A general approach to the radiographic diagnosis of spinal disorders is covered.

Humans↗