CT-diagnosed mesenteric alterations in patients with non-Hodgkin's lymphoma: a population-based study.

Background: Mesenteric alterations are associated with non-Hodgkin's lymphoma (NHL), but the frequency and prognostic value of mesenteric alterations are unknown in patients with NHL.

Patients And Methods: We retrospectively screened 120 patients that were treated for NHL between January 1996 and December 2001 for the presence of mesenteric alterations, defined on computed tomography (CT) scans as nodular or diffuse infiltration of the abdominal mesentery with increased density of mesenteric fat.

Results: 21 patients (17.

Dieulafoy's disease of the lung: a potential disaster for the bronchoscopist.

Dieulafoy's disease of the lung is very rare. We present 2 cases, which are, to our knowledge, the 9th and 10th cases reported in the literature. Haemoptysis is the leading symptom of Dieulafoy's lesion of the lung.

Brown tumor of the thyroid cartilage: CT findings.

Brown tumor of the larynx is extremely rare. We describe a patient with long-standing primary hyperparathyroidism and severe skeletal involvement associated with brown tumors of the axial and appendicular skeleton and of the thyroid cartilage. Ossification of the laryngeal skeleton may explain the presence of this process in this unusual location.

[Congenial seminal vesicle cyst with an intracystic papillary adenoma associated with ipsilateral renal agenesis].

We report on a case of a 67 year old male who had a cyst in the seminal vesicle region on sonography. The computed tomography and magnetic resonance imaging findings included a seminal vesical cyst with an intracystic tumor associated with an ipsilateral renal agenesis and are demonstrated. Postoperatively the diagnosis of an intracystic papillary adenoma in a seminal vesicle cyst was made histologically.

Prediction of angiographic carotid artery stenosis indexes by colour Doppler-assisted duplex imaging. A critical appraisal of the parameters used.

The aim of our study was to establish colour Doppler-assisted duplex imaging (CDDI)-criteria to predict an angiographic internal carotid artery (ICA) stenosis of at least 70%, according to the North American Symptomatic Carotid Endarterectomy Trial (NASCET) and European Carotid Surgery Trialists (ECST) methods of measurement. In the following, we describe the findings in 79 patients who were screened for carotid endarterectomy by CDDI and further evaluated by digital subtraction angiography (DSA). In 158 carotid arteries, 107 stenoses of > 30% and nine occlusions were found.

Impaired somatosensory discrimination of shape in Parkinson's disease: association with caudate nucleus dopaminergic function.

Tactile discrimination of macrogeometric objects in a two-alternative forced-choice procedure represents a demanding task involving somatosensory pathways and higher cognitive processing. The objects for somatosensory discrimination, i.e.

[Bronchogenic cyst. A rare benign esophageal tumor].

A case of confirmed esophageal bronchogenic cyst is reported. We review the clinical and pathologic features of this rare congenital foregut anomaly, and emphasize its radiographic appearances with special reference to differential diagnosis.

[Radiodiagnosis of gastrointestinal lymphomas].

Radiological synopsis of primary gastrointestinal lymphoma depends on the growth direction and dynamism of the tumor, i.e. grade of malignancy and stage of the pathological processes at diagnosis.

Elevation deficit caused by accessory extraocular muscle.

Purpose: To report an elevation deficit, which was caused by an accessory extraocular muscle, in a 6-year-old boy.

Methods: Computed tomography and magnetic resonance imaging were used to confirm an accessory, fusiform, well-defined, solid structure in the retrobulbar space.

Results: A supernumerary intraconal muscle was detected between the annulus of Zinn and the posterior part of the left globe.

[Magnetic resonance tomography of hypophyseal tumors].

After describing the topographical anatomy of the pituitary gland, the sellar and parasellar region, in magnetic resonance (MR) imaging, the morphology of pituitary adenomas in MR imaging will be discussed and illustrated, with special reference to differential diagnostic aspects. The diagnostic information and the present clinical relevance of MR imaging, both in pretherapeutic and follow-up situations, will be considered. This will be done using unenhanced and gadolinium-enhanced T1-weighted spin-echo sequences in coronal as well as in sagittal cross sections at 1.

[Computed tomographic diagnosis of dissecting aneurysm of the aorta].

Twenty-four patients with dissecting aortic aneurysms have been examined by CT and possible causes of mistaken diagnosis are discussed. Failure to diagnose a dissection by CT may be due to atypical localisation and thrombosis of the aortic dissection; dissections of small volume, particularly in the ascending aorta; failure to demonstrate an intimal flap and inadequate contrast enhancement. A false positive diagnosis may be due to fibrotic, inflammatory or neoplastic periaortic changes, aneurysm of the sinus of Valsalva, or artifacts.

Computed tomography in acute pyelonephritis.

The computed tomographic findings in nine female patients with acute pyelonephritis were reviewed. The major impact of CT was the demonstration of renal enlargement, abnormal contour, perirenal inflammatory extension and, on contrast-enhanced scans, abnormal nephrograms and impaired renal function. It was concluded that CT can provide specific information about the nature and extent of the inflammatory process, thus complementing intravenous urography so that appropriate therapy may be selected.

[Computed tomographic diagnosis and differential diagnosis of malignant paranasal sinus tumors].

The CT appearances of malignant tumours of the paranasal sinuses are illustrated on the basis of 15 patients, and the differential diagnosis discussed. Malignant soft tissue tumours in the paranasal sinuses are characterised on CT by their non-homogeneous structure; they may destroy the bony margins of the sinus and infiltrate neighbouring regions in certain preferred directions, and they may enhance following the administration of contrast. Precise definition of the malignant tumour by CT permits their exact staging, may help to determine therapy and is valuable for serial observation.

[Normal anatomic measurements in cervical computed tomograms].

Radiodiagnostically relevant normal values and variations for measurements of the cervical region, the arithmetical average and the standard deviation were determined from adequate computer tomograms on 60 healthy women and men, aged 20 to 83 years. The sagittal diameter of the prevertebral soft tissue and the lumina of the upper respiratory tract were evaluated at exactly defined levels between the hyoid bone and the incisura jugularis stuni. The thickness of the aryepiglottic folds, the maximal sagittal and transverse diameters of the thyroid gland and the calibre of the great cervical vessels were defined.