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Biomedical subjects

K Stellamor

Publications and source records attributed to K Stellamor.

At least 19 recordsLinked to original sources
PubMed1992

[The value of barium double-contrast study in the aftercare of gastrectomy patients (Roux-Y)].

We evaluated 32 patients who had undergone jejuno-oesophagostomy for gastric carcinoma. Double contrast radiography was performed 3 to 36 months after gastrectomy, 3 to 14 days prior to routine endoscopy. Endoscopy is superior to double contrast radiography in detecting tumour recurrence, particularly in small tumours, due to the possibility of biopsy. Double contrast radiography is excellent in demonstrating the afferent loop. We found a high number of jejuno-oesophageal reflux and very different small intestine transit times without correlation to clinical signs and symptoms.

Adult↗
PubMed1991

[The physician as judicial expert witness].

Excellent special knowledge and consideration of the limits of competence in his own special field as well as in the court procedures are characteristic of a medical expert at law court. Only he provides medical expert knowledge that the court lacks in criminal, civil and social law. This must not mislead him to try to solve legal problems, ie to play the role of a "judge in white". Therefore knowledge of our jurisdiction is a necessity. Duties and rights of medical experts are discussed. The necessary human conduct with the person concerned is emphasized. The correct way of preparing an expert evidence is discussed in the special case of the causal connection. In conclusion it seems mandatory to include the topic 'medical expert' into the theoretical and practical education of physicians.

Austria↗
PubMed1991

[Differential diagnosis of a low echo thyroid gland].

Hypothyrosis as a result of inflammatory disease of the thyroid gland, often is a diagnostic problem because of the insidous onset and its lack of specific symptoms. In the rather large amount of literature about sonography of the thyroid no papers with a systematic approach to this entity are found. In a prospective study we evaluated 36 proven cases and found a characteristic sonographic pattern of the thyroid with regard to its size, contour and structure.

Adolescent↗
PubMed1990

[Differential diagnosis of the low-echo thyroid gland].

Hypothyrosis as a result of inflammatory disease of the thyroid gland, often is a diagnostic problem because of the insidious onset and its lack of specific symptoms. In the rather large amount of literature about sonography of the thyroid no papers with a systematic approach to this entity are found. In a prospective study we evaluated 36 proven cases and found a characteristic sonographic pattern of the thyroid with regard to its size, contour and structure.

Adolescent↗
PubMed1990

[Sonography of the lungs and pleura].

Diagnoses were made by ultrasound in 73 out of 80 cases with unclear thorax x-ray. One case was misinterpreted, no diagnoses were possible in 6 cases. Pleural effusion or opacities reaching the pleura are necessary to perform ultrasound examination. Sonographic findings in pleural or pulmonary changes are discussed and correlated with pathological anatomical findings. Additional information can be obtained by sonography in pleural lesions and in pulmonary lesions masked by pleural effusion. Atelectases can be differentiated from pneumonia, and tumours can be identified in peritumorous pneumonia or atelectases.

Adult↗
PubMed1989

[Laryngeal and hypopharyngeal carcinoma--the limits and advantages of sonography].

29 patients with carcinoma of the larynx and the hypopharynx were evaluated not only for staging cervical lymph nodes but also for classification of the primary tumour. With appropriate technique it is possible to assess tumour infiltration (T4) of surrounding tissue of the larynx at all levels. Tumour classification T1 to T3 is possible in patients with tumour of the epiglottis (regio supraglottis, UICC). The endolaryngeal tumour T1 to T3 (regio glottis and subglottis, UICC) still remains the domain of the microlaryngoscopy. The limits of the method are apparent in hypopharynx carcinomas where in only 50% of the patients the tumour could be assessed.

Aged↗
PubMed1989

[Bone metastases diagnosed by ultrasound].

Osteoclastic bone metastases - mostly associated with soft tissue infiltration - but also osteoblastic metastases present a typically sonographic appearance. These patterns are discussed in two cases. Nearly 50% of skeletal metastases are located in sonographically easily accessible regions. The use of this low-cost and simple method complementary to other diagnostic procedures is discussed.

Aged↗
PubMed1989

[Noninvasive diagnosis of post-puncture vascular complications of the femoral artery: i.v. DSA and duplex sonography].

In 1200 cases of angiographic or invasive procedures with puncture of the femoral artery, vascular complications occurred in 10 patients (0.8%). In a prospective study, duplex sonography and intravenous digital subtraction angiography were used as diagnostic methods in these cases. All 10 cases with vascular complications were diagnosed correctly by means of i.v. DSA, and the underlying pathology was documented exactly. Duplex sonography yielded the correct diagnosis in 8 cases, and 1 case was incorrectly diagnosed as an aneurysm; angiography suggested an arteriovenous fistula, which was surgically verified. In one case duplex sonography was negative. The noninvasive procedure of duplex sonography plays an important role in the diagnosis of post-puncture vascular complications. Because of its high accuracy, this simple method should be the first diagnostic step. Intravenous DSA should be used in cases where the results obtained with duplex sonography are equivocal.

Aged↗
PubMed1989

[Hereditary onycho-osteo-arthrodysplasia (nail-patella syndrome) with progressive renal failure].

A case of a fully developed hereditary onycho-osteo-arthrodysplasia (nail-patella syndrome) is presented. The typical signs, such as the iliac horns or variations of the knees, cubitals and nails should be familiar to every radiologist. The associated nephropathy seems to be caused by typical changes in the glomerular basement membrane seen in electron microscopy. Asymptomatic proteinuria is found in about 60% of the cases, in 5.5-8% the disease leads to the necessity of haemodialysis because of renal insufficiency. Hence, early diagnosis is very important.

Adult↗
PubMed1988

[Comparison of ultrasonic and CT diagnosis of solid liver tumors].

A prospective study compares the results of ultrasound and CT diagnostics in 323 patients with liver tumours. The accuracy of both methods is high: the sensitivity of ultrasound comes up to 90.4%, of CT to 96.1%. The important role of the comparatively economic ultrasound in specific tumour diagnosis is eg shown by the fact that if lesions of high and low echogenicity were found in one patient, or if there were found calcifications, the tumour was always a malignoma. This specificity was missing in the cost intensive CT which is also more time consuming and needs i.v. contrast.

Adenoma, Bile Duct↗
PubMed1988

[Behavior of contrast media in liver tumors in computerized tomography--correlation between pharmacokinetics and histological structure].

The characteristics of contrast medium in liver tumours were studied via CT in a prospective study in 247 patients. In 30 cases, dynamic CT was performed additionally. Analysis of the time density diagrams shows the pharmacokinetics of the lesion corresponding to the histological structure classified into 4 types according to Claussen and Lochner. We were able to prove that at a fast scan (15 slices in 3 minutes) the specific pharmacokinetics of a tumour can be determined. Classification in this way is possible in the majority of cases. Pharmacokinetics of tumours are related to histology, but a specific histological diagnosis cannot be made as yet.

Adenoma, Bile Duct↗
PubMed1987

[Long-term results using a nonionic contrast medium--a report of clinical experiences].

Between January 1982 and May 1986 more than 50,000 patients were examined radiologically with water-soluble (ionic and nonionic) contrast media at the Department of Radiology Rudolfsstiftung, Vienna. In 1983 only 2.2% of the contrast agents used were nonionic, in 1985 the share had increased to 53.3%. During this period the rate of drug-related side effects (DRSE) decreased from 6.9% (1983) to 3.3% (1985). From 1983 to 1985 DRSE were observed with 1952 patients after administration of ionic agents, whereas after application of nonionic media adverse reactions occurred in only 6 cases, so that DRSE rates of 6.98% respectively 0.07% resulted for ionic respectively nonionic contrast media. These results are discussed with regard to the physicochemical properties und physiological actions of ionic and nonionic contrast agents.

Angiography↗
PubMed1985

[Pre- and postoperative diagnosis of an aortic aneurysm by dynamic computed tomography with omission of angiography].

A study which was prospective with regard to the method, showed 41 cases of aortic aneurysms in a collective of 3597 body-CT-examinations (1.14%). By means of CT and its possibility of reconstruction all morphological details of an aneurysm become visible. The course of the vessels to the bowel and to the kidneys are shown with the same excellence as in angiography. However, additional information which angiography cannot supply, is also given, like non-perfused lumen, changed wall structure and perivascular changes. Measurement of flow can be performed in the vessel and in the organ, the arterial supply of which is involved in aneurysmatic disease. The method is non-invasive. This is important for control after operation. Morphological changes of the vessel prosthesis are detected, as well as bleeding and infection. Functional parameters are determined semiquantitatively.

Adult↗
PubMed1985

[Venous diagnosis using duplex sonography].

Duplex sonography is an excellent alternative in sonographically accessible regions of the venous system if i.v. administration of contrast media for opacification is not possible for technical reasons or because of medical contraindications.

Adult↗
PubMed1979

[Responsibility of the radiologist in gastric studies].

The radiologist's responsibility for the investigation of the stomach. The most successful results in the gastro-intestinal examination is obtained by combination of ray-examination (double contrast method) with gastroendoscopy and biopsy. It is of main importance, that the X-ray examination is performed at the beginning of all diagnostic step. The radiologist is obliged to use the best examination method. Therefore an economic standardized process of diagnosis is recommended which can take place also at the radiologist's consulting room. The high accuracy which can be reached by the recommended proceeding justifies the little additional expenditure of time and material.

Biopsy↗
PubMed1979

[Typical changes of the intestinal wall due to oral stenosing processes (author's transl)].

Two different changes of the intestinal wall, which seem to be of stenotic orgin, can be observed prä-stenotically. One of these changes is represented by diverticulosis, whereas the other is the so-called ischaemic-ulcerous lesion of the mucosa. The latter accompanying disease supplies highly important preoperative information. This condition can be diagnosed practically exclusively by the roentgenologist. In many cases, stenosis makes endoscopic assessment impossible. Diverticulosis is of theoretical interest in this connection. The article goes into the possible aetiology of the changes. Two typical cases underline the importance of the diseased conditions under discussion, which are relatively rare, as is evident from a statistical evaluation of the author's case material.

Adenocarcinoma↗
PubMed1979

[Diagnosis of liver and biliary diseases with 99mTc-Hepatobida (author's transl)].

Application of 99mTc-Hepatobida has turned out to be a convenient diagnostic screening method in liver and biliary disease. Side effects are unknown, thus patients with iodine allergy or other forms of allergy, as well as patients harboring autonomous adenomata of the thyroid, and severely ill patients will tolerate this substance well. 99mTc-Hepatobida may be applied even in the presence of highly elevated levels of plasma bilirubin and thus will yield diagnostic results in all forms of hepatic disease if findings are monitored repeatedly. In addition screening with 99mTc-Hepatobida will in some cases suffice to establish the diagnosis and thus forgo more complicated diagnostic procedures.

Acetanilides↗