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Biomedical subjects

J Buck

Publications and source records attributed to J Buck.

At least 73 records · Page 4Linked to original sources
PubMed1984

[Rare localization of Paget's osteodystrophia deformans in the skeleton].

Frequency of rare skeletal lesions in Paget's disease is compared with normal localisations. Radiological morphology of rare localisations of Paget's disease of the scapula, of the lower arm bones, of the hand bones, of the patella and the calcaneus are described. Thickening of trabeculae in the spongy bone and porosity of compact bone, deformation and enlargement of the bones are typical; this has to be differentiated and related to a small number of other bone diseases.

Bone and Bones↗
PubMed1983

[The information value of roentgen computerized tomography in atrial tumors of the heart].

The symptoms of intracavitary masses are usually not characteristic and are often confused with those of mitral valve disease. It is therefore necessary to employ all possible diagnostic measures. Like echo cardiography, computer tomography is a non-invasive method which provides accurate information concerning the size, position and shape of the mass. Angiocardiography can confirm these findings, but provides extra information only if there are additional abnormalities or coronary disease. Early diagnosis is important, since the patient is at risk from complications such as cardiac failure, emboli and arrhythmias, and since operative removal of the tumour carries a good prognosis.

Aged↗
PubMed1983

[Innominate grooves. A discussion].

Innominate grooves are delicate, inconstant speculations on the colonic margin which may be seen on barium enemas; their origin and significance are matters for discussion. Three hundred and fifty-three double contrast enemas (divided into four groups, depending on the techniques uses) were studied in respect of the presence, localisation and circumstances under which innominate grooves could be seen. The results showed that the incidence of grooves depended on the technique used and varied between 91% and 3%. The most common localisations were the descending and sigmoid colon and in the transverse colon, near the hepatic flexure. The grooves could be seen only towards the end of the examination. It follows that innominate grooves are a normal phenomenon in a healthy mucosa, which can be recognised under optimal circumstances. It is probably due to visualisation of the relief pattern of the mucosa, the delicate folds being particularly noticeable in relation to lymph follicles. Innominate grooves should not be misinterpreted as abnormal findings, but must be distinguished from somewhat similar changes in the colon due to inflammatory disease.

Colon↗
PubMed1983

Organization and function of a regional pediatric trauma center: does a system of management improve outcome?

Since 1975, more than one thousand children with life-threatening injuries have been preferentially transported to our statewide Regional Pediatric Trauma Center by helicopter or city ambulance. Initial care is provided by emergency medical technicians with special instruction in the handling of pediatric trauma. More than half the children admitted to our service were injured in motor vehicle/pedestrian or motor vehicle/bicycle accidents. Have care and outcome improved? This system provides for excellent first aid at the scene and more rapid radio-directed transport to the trauma center where in-hospital management is provided by pediatric and surgical personnel experienced in the treatment of all aspects of childhood trauma. We have organized weekly trauma morbidity and mortality rounds and have established a trauma registry and index of severity. Pelvic fractures from blunt trauma had a mortality in this series of 1.4%, the lowest of any reported experience. Between January 1976 and December 1979, 46 children with coma of longer than 24 hours' duration were treated in the Pediatric Intensive Care Unit. The mortality rate was still high (38%) but employing intracranial monitoring and aggressive control of brain edema, 88% of the survivors had a good recovery without major motor or intellectual defects. The large volume of cases allows for development and evaluation of new techniques in trauma management and invaluable experience in the training of general surgical residents, pediatricians, and emergency physicians.

Adolescent↗
PubMed1983

[Benign disorders of soft tissue on the roentgen computer tomogram].

Diagnostic procedures of soft tissue lesions have considerably improved by the high density resolution of computed tomography. Indications for investigations by CT are described in detail and illustrated by examples. Enhancement by contrast medium enables further differentiation of the tumors. In most cases for cancer control the scar tissue can be differentiated from relapse. Comparison of both sides reveals isodense tumors. Limits of the CT method will be met in looking for discreet changes in the joints.

Abdominal Muscles↗
PubMed1983

[Blunt kidney injuries - operative or conservative therapy? A contribution to classification].

There is consensus concerning the management of minor (Grade I) and critical (Grade III) renal trauma, while the management of Grade II-lesions is contradictory. 48 consecutive cases of renal trauma were evaluated in order to define more exactly the indications of operative and non-operative therapy. As a diagnostic approach sonography and computerized tomography were added to urine examinations and intravenous pyelography, while angiography is only used when surgical intervention is expected. As therapeutic regimen for the intermediate group of Grade II b-lesions we recommend expectant management with "delayed urgency". This concept is based on a more differentiated classification particularly of major injuries (modified from Hodges and Lutzeyer). The importance of short-time clinical, sonographic and CT-control is underlined. Deterioration of clinical condition, associated injuries or pre-existent renal anomalies are indicating delayed operation. Emphasizing the intermediate group within major injuries between expectant conservative and operative management (about 5-10%) the main controversial issues are presented.

Adult↗
PubMed1983

[Normal renal variations as a cause of sonographically suspect tumors].

106 cases of 470 computed tomographic studies of suspected renal tumors were referred to us because a tumor was expected by ultrasound examination. 67 suspected renal tumors proved to be physiological variations, in 39 cases tumor suspicion was confirmed by computed tomography. Since ultrasound findings frequently seem to be false positive, criteria for the diagnosis of renal tumors were reviewed. Our experience is that the combination of inhomogeneity in echo pattern, irregularity of the outer contour and/or the inner parenchymal border seems to be relevant for ultrasound diagnosis of renal tumors whereas isolated widening of parenchyma does not seem to be suspicious by itself.

Diagnostic Errors↗
PubMed1982

[Diagnosis of insulinoma of the pancreas by computed tomography ].

By example of a case the possibility for diagnosis of insulinoma by sequence computed tomography is demonstrated. If clinical symptoms are clear computed tomography should be performed before angiography, as in most cases sonography is not very successful for localisation. Because of high vascularisation of the tumor it can be found by computed tomography after one or more intravenous bolus injections or after high dose infusion of a renal excreted contrast medium. By aid of magnification technique and sequence computed tomography insulinomas of 5 mm in diameter can be recognized.

Adenoma, Islet Cell↗
PubMed1982

Computed tomography of the adrenal glands.

Whole body CT opens a third dimension-in addition with the advantage of being a non-invasive method with relatively negligible risk. Both, the normal CT findings of the adrenal gland and the normal variants in shape and position are described. With help of morphometry and image processing measurements of the size of the adrenal gland of 20 healthy patients were made and are listed; not only the respective normal variants but also hypo-hyperplasia are pointed out. Some examples are suitable for the illustration of pathologic conditions, such as inflammation and benign and malignant primary and secondary neoplasis. Finally, the value of adrenal gland CT is discussed with reference to the other radiologic methods.

Adenoma↗
PubMed1981

[Angiography and CT in rare types of renal disease (author's transl)].

Our observation of several cases of rare renal disease demonstrates that CT cannot replace the conventional radiographic evaluation methods such as intravenous urography, retrograde pyelography, tomography and angiography. These methods are additive but not competitive with CT.

Adult↗