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K Rieden

Publications and source records attributed to K Rieden.

At least 37 records · Page 2Linked to original sources
PubMed1987

[Value of 3-phase skeletal scintigraphy in the diagnosis of bone metastases].

51 patients suffering from 125 bone metastases of various primary tumors were investigated with three-phase skeletal scintigraphy in an attempt to define criteria characteristic for bone metastases with regard to differential diagnosis. During the 3 phases of imaging, the metastases exhibited 5 different patterns of activity concentration. None of these patterns was correlated either to the size and morphological X-ray appearance of the metastases or to the histology of the primary tumors. The intensity of radionuclide concentration was also varying. The most frequent patterns of activity concentration were increased uptake during the blood-pool phase and skeletal phase combined with absence of concentration during the angiographical phase (43%), and increased uptake during all of the 3 phases (34%). In this series, a pattern of scintigraphical findings characteristic for bone metastases or helpful in the differential diagnosis could not be determined. In our experience, three-phase skeletal scintigraphy is not useful in the diagnosis and differential diagnosis of bone metastases.

Bone Neoplasms↗
PubMed1987

Perspectives of radiotherapy.

The 5 years' survival rate of all cancer patients is 35-45%. In that survival rate radiotherapy takes part in 15%. By further development of radiological methods and techniques radiotherapy gains significance in the recent time. Optimizing radiation planning and tactics, all modern imaging techniques are applied consequently. The radiotherapist must be able to asses their immanent specifity which should remain object of the radiological training, even if separated into therapy and diagnostics. Dose distribution is calculated by computer; three-dimensional planning is done in tumors of the mediastinum, oesophagus carcinoma and paraaortic lymphomas. Critical description of radiation techniques, results, problems and prognoses are given by results in tumors of the epipharynx and gastric cancer. After-loading, done until now only in gynaecological tumors, is performed in recurrences of pharyngeal tumors by individually shaped applicators. Reducing the number of therapy failures as well as possible, the application of higher tumor doses, new kinds of rays as neutrons and combinations with physical and chemical methods is outlined. Modifications of radiation volumes are discussed, especially the irradiation of the complete abdomen in ovarian cancer, the irradiation of the complete body surface by electrons in mycosis fungoides, and the total body irradiation prior to autologue bone marrow transplantation. Modifications of fractionation are shown in short-time radiation of bone metastases and single-time radiation of brain lesions. Low penetrating electron therapy facilitates intraoperative single-time irradiation. Because of higher biological efficiency neutrons and heavy ions allow to irradiate low sensible tumors or recurrences embedded in fibrotic tissue respectively. The combination with hyperthermia yields good results in tumors of the head and neck with better local response and total remissions of 59%. There are potentials in synchronising with chemotherapeutics. Remissions of different duration were achieved in 190 patients. Because of neutrotoxicity there are still problems in applicating radiosensitizers. New methods are applied treating endocrine active tumors by labelled hormone precursers.

Brachytherapy↗
PubMed1987

[Adenomyomatosis of the gallbladder--sonography and cholecystography].

The authors report on a 26 year old female patient suffering for years of upper abdominal pain caused by adenomyomatosis of the gallbladder. The different types of cholecystopathy are demonstrated, the decisive diagnostic criteria shown, and the results of diagnostic imaging (cholecystography/ultrasonography) discussed.

Adult↗
PubMed1986

[Functional heterogeneity of liver metastases in 3-phase computerized tomograms].

Ninety patients with liver metastases (68 colorectal carcinomas, 22 breast carcinomas) were examined by triphasic angio-CT. This included demonstration of the entire liver after a bolus-like injection of contrast. Originally, the metastases were hypodense, but showed four patterns of contrast enhancement. Quantitative evaluation of the mammary carcinomas showed a marked increase in density during the bolus phase, with similar contrast values in the liver and at the centre and edge of the metastasis at ten minutes after the injection. Colorectal carcinomas showed only slight increase in density after contrast injection. The difference in density between the centre and the periphery of the metastasis was still present on later images. This finding indicates that there are differences in the vascularisation of these metastases.

Breast Neoplasms↗
PubMed1986

[Real-time sonography. An important imaging procedure in the diagnosis and treatment planning of bone metastases].

The value of sonography for diagnosis and therapy planning of bone metastases is shown in 110 affected skeletal regions (60 patients with malignant diseases). Whereas sonography is inferior to conventional x-ray in respect of defects of the spongiosa, it is equal with regard to defects of the cortical layer but superior in respect of changes of the periosteum and the surrounding soft tissue. Moreover, there is an excellent correlation (97%) between pain and the reaction of periosteum and soft-tissue layer. Because of the three dimensional representation of the tumourous processes sonography has proved valuable in radiotherapy planning (field size, radiation method, risk organs etc.).

Adult↗
PubMed1986

[Radiotherapy of pathological fractures and skeletal lesions in danger of fractures].

Radiotherapy is of great importance in the treatment of pathologic fractures and skeletal lesions bearing the risk of fracture which are induced by malignomas, especially if these are in an advanced stage. In dependence on site and extent of skeletal destruction as well as on the general tumor dissemination, it can be distinguished between palliative radiotherapy and curative radiotherapy aiming at analgesia and remineralization. A retrospective analysis of 27 pathologic fractures and 56 skeletal lesions bearing the risk of fracture in malignoma patients showed an analgetic effect obtained by radiotherapy in 67% of pathological fractures and in 80% of skeletal lesions bearing the risk of fracture, whereas a remineralization could be demonstrated for 33% of pathological fractures and 50% of destructions bearing the risk of fracture. A stabilization of destructions progressing before therapy was found in 55% of pathological fractures and 40% of skeletal lesions bearing the risk of fracture. Thus a partial loading, supported by orthopedic prostheses, was possible for more than 50% of all patients.

Adult↗
PubMed1986

[Contact allergic reactions in the respiratory mucosa. A differential diagnosis with malignant lymphoma].

It is well known that cell-mediated allergic reactions can cause tissue destruction, for example, the tuberculin-like allergic reactions. Moreover, this type of allergy can be the starting point of malignant lymphomas in the sense of the theory of the dysregulative development of malignant lymphomas. After all, the inflammation around the tumour is the expression of cell-mediated defense of the body against the neoplastic cells and corresponds to the same immunologic mechanisms as cell-mediated allergy. Therefore, both are rich in lymphoid cells. That is why they are important diagnostic and differential diagnostic criteria. This is illustrated by two cases with cell-mediated contact allergic reactions in the nose and paranasal sinuses. In one of these cases, the transition to malignant lymphoma had just occurred.

Cell Transformation, Neoplastic↗
PubMed1986

[Diagnosis of lesions in the area of the facial skull--indications and effectiveness of the conventional roentgen technic in comparison with computer tomography].

The substantial information conveyed by conventional radiodiagnostics of pathological alterations of the facial skull is shown in 243 patients examined by conventional radiodiagnostic means and by computerised tomography. Except in case of special demands, conventional tomography has to be preferred in routine diagnostics of the facial skull as a primary method supplying an answer to the most important questions at a lower cost and in a shorter time.

Diagnosis, Differential↗
PubMed1986

[Value of conventional tomography and computer tomography in therapy-resistant diseases of the paranasal sinuses].

The informational value of conventional tomography as primary diagnostic method is pointed out in diseases of nasal sinuses resistant to therapy. 5 cases demonstrate the additional information gained by CT-differentiation of soft tissue structures, intraorbital and intracranial expansion. In 78.4% of the examined group of 51 patients conventional tomography allowed the diagnosis of a process limited to the nasal sinuses, further evidence by CT could be omitted. In 11 patients examined by CT additionally, the expansion of the process was defined more precisely and the assumed intraorbital and intracranial growth confirmed.

Adolescent↗
PubMed1985

[Diagnostic approach in tumor patients with non-specific upper abdominal complaints].

The authors demonstrate on the basis of several observations of perigastric space-occupying growths in malignoma patients that x-ray examination of the stomach via mucosa and double-contrast imaging yields results of greatest diagnostic value in non-specific upper abdominal complaints. Supplementary diagnostic tools--but by no means competing methods--are often supplied by computed tomography and sonography. In case of extensive infiltration of the gastric wall, gastroscopy is indicated as an additional means to obtain confirmation by biopsy.

Abdominal Neoplasms↗
PubMed1985

[Diagnosis of etiology and complications of recurring urinary tract infections using imaging procedures].

The indication and efficiency of various radiological examination methods in relapsing infections of the urinary tract, as well as the complications of such infections, are described, and characteristic and pathognomical findings are demonstrated. The diagnostic accuracy of the individual imaging methods depends on the site, size, and density of the pathological process. Accurate diagnosis also requires the incorporation of clinical findings including those established by means of clinical pathology setups.

Abscess↗
PubMed1985

[Chronic pyelonephritis as a false interpretation in the excretory urogram].

Chronic pyelonephritis, which is largely diagnosed via imaging procedures, is characterised by defined parenchymal scars that become manifest in the excretory urogram as contour recessions of the kidney and result in deformations of the calyces and papillae. The authors describe other renal diseases, dysplasias, variations from the standard, and artifacts resulting in similar signs on x-ray film, thus leading to the wrong diagnosis of chronic pyelonephritis. The essential differential diagnostic criteria are explained.

Chronic Disease↗
PubMed1985

[Importance of the general radiograph of the cervical spine in vertigo and pathologic proprioceptive cervical nystagmus].

The general roentgenogram of the cervical spine often shows manifold pathological alterations by patients without any clinical complaints. On the other hand, there are cervical vertigo and different symptoms caused by the cervical spine, its joints, muscles and ligaments without any X-ray manifestation. Nevertheless, some connections are assumed to exist between vertigo and alterations of the cervical spine an assumption supported especially by the frequently successful elimination of cervical troubles by chirotherapy. We compared the X-ray manifestations in patients complaining of vertigo with any and without any pathological proprioceptive cervical nystagmus provoked by examination according to Moser and revealed by electronystagmography. The extended posture of the cervical spine seems to point to a possible cause of vertigo. Likewise, some degenerative alterations seem to exercise a pathological effect, provoking cervical vertigo additionally if both effects are combined. Uncovertebral arthroses seem to have the same effect without occurring in combination with other effects. The general roentgenogram of the cervical spine in the sloping, lateral and anterior-posterior direction may consequently point to some possible causes of cervical vertigo.

Cervical Vertebrae↗
PubMed1984

[Roentgen symptoms of renal osteopathy].

Chronic renal insufficiency is associated with metabolic disturbances which ultimately lead to typical, partly extremely painful changes in the skeletal system the longer the disease persists. Regular x-ray control of certain skeletal segments allows early detection of renal oesteopathy if the radiological findings described in this article are carefully scrutinised and interpreted.

Adult↗
PubMed1984

[Roentgen diagnosis of malignant lymphomas].

In all groups of malignant lymphomas, accurate staging before onset of therapy and follow-up controls during and after therapy are mandatory. Non-invasive examination methods for assessing the abdominal and thoracal lymph node sites are: conventional x-ray films of the thorax in two planes with fluoroscopy, tomography and esophagography, as well as computed tomography and sonography. Lymphography is an invasive method of x-ray diagnostics which should be used primarily if the histology is unknown, since this method permits not only to assess the lymph node size, but also the storage structure.

Bone Neoplasms↗