The Journal of computed tomography最新文献

A case of a calcified carcinoma of the lung which later developed a large diffusely calcified brain metastasis is reported. Considerations which caused us to suspect a malignant lesion at presentation, although diffusely calcified, are discussed.

Malignant fibrous histiocytoma of bone was first described as a separate entity in 1972. It is an uncommon tumor occurring in older age groups and only rarely occurs in the spine. The plain film radiographic features of this condition have been described, however, we have found no reports of the computed tomography appearance. We present a case of spinal malignant fibrous histiocytoma that occurred in a 17-year-old female. The computed tomography characteristics of this lesion are described, and use of computed tomography in the evaluation of malignant fibrous histiocytoma of the spine is defined.

Hepatic hemangioma (hemangioendothelioma) is a rare but most common benign vascular tumor of the pediatric age group. Prompt diagnosis and treatment prevent complications. Familiarity with various CT patterns should facilitate correct diagnosis of hemangioendothelioma of the liver in infants and children and avert angiography.

A rare case of large cystic acoustic neurinoma with fluid level is described. The pathogenesis of the lesion and its differential diagnosis, particularly from meningioma, are briefly discussed.

A case of interruption of the inferior vena cavo which has two continuational pathways is reported. One is the hemiazygos and azygos continuation and the other is an unusual intrathoracic continuation, phrenic and pericardial vein draining through the highest intercostal vein into the left brachiocephalic vein.

Accurate femoral-acetabular relationship was not possible until the advent of the computed tomography scan. Computed tomography scan allows visualization and measurement of femoral torsion, femoral head contour, soft tissue and bony impingements on the femoral head, acetabular configuration and femoral-acetabular relationship.

An unusual case of intraspinal primitive neuroectodermal tumor arising from the sacral spinal nerve root is presented with the first documentation of myelographic, computed tomographic, and magnetic resonance imaging findings.

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.

Computed tomographic (CT) and angiographic findings in four cases of oligodendroglioma of the lateral ventricle are reported. CT showed a midline nodular intraventricular mass containing punctate calcifications and cysts. The tumors were slightly to markedly enhanced after the infusion of contrast media. Angiography showed slightly increased vascularity in the mass, and displacement of subependymal veins near the tumor. Oligodendrogliomas of the lateral ventricle are rare but should be included in the differential diagnosis of intraventricular tumors near the foramen of Monro.

Thoracic aortic dissection in association with preexisting abdominal aortic aneurysm is rare. An illustrative case is presented in which an additional complication of contained aortic rupture and renal infarction occurred. Computed tomography was the primary diagnostic modality.