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Biomedical subjects

H Frommhold

Publications and source records attributed to H Frommhold.

At least 109 records · Page 6Linked to original sources
PubMed1978

[Changes in liver haemodynamics after mesenterico-caval dacron prosthesis anastomosis ("H-shunt") in portal hypertension (author's transl)].

In fourteen patients with portal hypertension and bleeding from oesophageal varices, mesentericocaval anastomoses using a dacron-velour prosthesis ("H-shunt") were carried out. Evaluation of the haemodynamics showed: 1. Comparison of 13 pre- and post-operative angiograms showed an haemodynamicically effective shunt in 12 and a stenosed shunt in one. 2. The aim of relieving the portal circulation while maintaining antegrade portal flow was achieved in six patients. 3. In six patients, the portal vein was not seen in a splenic or mesenteric portogram despite an open shunt. Functionally, this corresponds to a porto-caval anastomosis. 4. Pressure reduction in the portal circulation can be so marked as to obtain retrograde portal flow from the hepatic artery. 5. If the portal blood flow through the liver disappears, the hepatic artery may obtain additional flow from the superior mesenteric artery (reversed flow in the gastroduodenal artery). 6. Increased arterial flow to the liver is made possible by a reduction in intrahepatic resistance. The role of collaterals, either arterio-portal shunts or shunts between the sinusoids, is discussed. 7. The hepato-fugal collateral circulation was reversed in twelve patients.

Adult↗
PubMed1978

[Comparison between computer tomography and ultrasound in abdominal and renal growing and displacing processes (author's transl)].

The advantages and limitations of both methods are analyzed and compared. The comparison is effected on the basis of the present standard of equipment. The results obtained with both methods are demonstrated by means of the example of frequent epigastric diseases. Despite the still limited number of patients examined simultaneously both by ultrasound and computer tomography, it seems that the sensitivity of both methods in case of growing and displacing processes in the epigastric or renal regions, does not differ greatly. A comparison of the specificity of both methods will be effected only after a large number of patients has been examined by both methods at the same time.

Abdominal Neoplasms↗
PubMed1978

[The radiological appearances of caustic burns in the upper intestinal tract (author's transl)].

Seventy-nine caustic burns of the upper gastrointestinal tract were divided into early and late effects. The radiological findings were analysed and discussed. The central role of radiology proved to be indisputable, particularly for demonstration of a perforation and for the control of treatment. Endoscopy is of particular value in the diagnosis of caustic burns if the radiological findings are negative, for following treatment and for clarifying atypical late changes.

Burns, Chemical↗
PubMed1978

[Radiation therapy for tumors of the nasal cavities and paranasal sinuses. I. Communication (author's transl)].

In the period between 1966 and 1976, a total of 53 cases with neoplasms of the nasal cavities and paranasal sinuses underwent radiological treatment. The 5-year-survival rate for all tumors of all stages amounted to 34.6%. Local recurrences appeared in 54%. The present cases are compared and analysed reviewing their special anatomic extension, clinical symptomatics, histology and classification. The radiotherapeutic proceeding is described.

Adult↗
PubMed1977

[Xero-radiographic examination of the capsule and ligaments of the knee joint. II. Demonstration of injuries to the cruciate and lateral ligaments and menisci (author's transl)].

The value of xero-radiography for demonstrating injuries to the capsule and ligaments of the knee has been investigated. A tomographic method was used in conjunction with arthrography of the knee. The results have shown that, in vitro, injuries of the cruciate and lateral ligaments and of the capsule are well shown by xero-tomography and that it is possible to evaluate their extent. Simultaneous demonstration of injuries to the menisci is less certain. In order to show these accurately, special methods would have to be employed. Despite the higher radiation dose which must be expected, and the greater complexity of this technique, we consider that a clinical investigation of the method is indicated.

Cartilage, Articular↗
PubMed1977

[The accuracy of sonography in the diagnosis of renal disease (author's transl)].

The accuracy of sonography in the diagnosis of spaceoccupying renal lesions was evaluated by a retrospective study of 221 patients. There were 15 incorrect diagnoses. In 93% of cases the sonographic diagnosis was correct. Erroneous diagnoses, which would have been difficult to avoid even retrospectively, were usually due to complex lesions which were partly cystic and partly solid. In order to differentiate cysts from solid lesions it is considered essential to use both A- and B-scans and step-wise variations of sound energy. These results emphasise the great value of ultrasound in the differentiation of renal abnormalities. Sonography should be used, during the clinical work up, after the urogram, but before angiography or other invasive methods are employed.

Adult↗
PubMed1977

[Radiation therapy and mode of propagation of non-Hodgkin lymphomas (author's transl)].

Out of a total number of 123 patients with non-Hodgkin lymphomas the result of local radiation therapy from 65 patients with lymphosarcomas or reticulosarcomas stage I or II are reported. In stage I, the tumor still being localized, there are good chances for recovery (3 or 4 years of survival without recurrenced in 75%). Already in stage II the percentages of a three-year survival without recurrences are reduced to 40% with lymphosarcomas and to 19% with recitulosarcomas. This most probably is due to an early, occult, already advanced cancerous spread, not having been recognized. More aggressive diagnostic measures for the staging, therefore, are recommandable. There are significant differences between lymphosarcomas and recitulosarcomas concerning their mode of propagation. Lymphosarcomas prefer the propagation into contiguous lymph node stations. With reticulosarcomas the generalisation to stage IV predominates at the first recurrence. For an improvement of the therapeutic results an irradiation is recommended which encompasses the adjacent lymphatics not yet being involved, the so-called "extended field technic". Early cytostatic therapy in stage II additionally has to be discussed, particularly for reticulosarcomas.

Cell Division↗
PubMed1977

[Optimation of the dose geometry during irradiation of the para-aortic lymph nodes with 42 MeV photons (author's transl)].

Different irradiation techniques for therapy of para-aortic lymph nodes are compared using fixed or pendulous fields of photons with the energy 42 MeV from a 42 MeV betatron. The techniques are estimated considering the load to the radio-vulnerable contiguous organs, especially to the spinal cord and kidneys. The findings presented, being founded on measurements and on computations resulting therefrom, show that the most satisfying dose distributions are obtained by the Y-shaped three-field technique, by the combination of telecentric-excentric dorso-ventral pendulous irradiation with a ventral irradiation by fixed fields, or be means of a biaxial excentric pendulous irradiation. By examples evidence is given of the possibility of delivering a focal dose of 6000 rd or more to the tissue within a large-sized target volume, whilst the radiation load to the contiguous radiosensitive organs, i.e. spinal cord and kidneys, does not exceed the tolerance dose.

Aorta, Abdominal↗
PubMed1977

[Corrosive lesions of the upper intestinal tract in gastrectomized patients (author's transl)].

Lesions of the upper gastrointestinal tract caused by acid or alkaline solutions are generally limited to the esophagus and the stomach, because of physiological blocking mechanisms. In patients partially gastrectomized noxious solutions however can enter into lower parts of the gastrointestinal tract and cause severe lesions. Among 74 patients observed with corrosive lesions of the gastrointestinal tract two had undergone partial gastrectomy (Billroth II) previously. In these 2 patients very severe lesions of the intestinal mucosa were initiated; one of these patients died in spite of two resections of parts of the small intestine after massive gastrointestinal hemorrhage. These additional complications have to be foreseen in gastrectomized patients with corrosive lesions of the gastrointestinal tract.

Adult↗
PubMed1977

[Ultrasound diagnosis of the liver and gallbladder (author's transl)].

Ultrasound echography has proved a non-invasive, reproducible, harmless and, for the patient, not burdensome technique for the diagnosis of diseases of the liver and bile ducts in the right upper abdomen. Diffuse changes of the organs and disease of the bile ducts as well as cystic or tumorous solid changes in the upper abdomen are the main spheres of sonography. The use of "grey value" techniques has increased the efficiency of compound ultrasound examinations. We can expect further improvements with digital computerised evaluation of signals.

Cholelithiasis↗
PubMed1976

[Xeroradiographic studies on the capsule and ligaments of the knee joint. 1. Anatomy of the cruciate and lateral ligaments in the xerotomogram].

The suitability of xeroradiography for contrast arthrography was investigated by in vitro studies. Special attention was devoted to the cruciate and lateral ligaments on xero-ty lateral tomography. The anterior and posterior ligments can be evaluated and defined satisfactorily in the antero-posterior view. The lateral ligaments can be seen on xero-tomography without difficulty. The use of xero-tomography promises to improve the radiological diagnosis of injuries of the capsule and ligaments of the knee joint.

Humans↗
PubMed1976

[The application of sonography in the differential diagnosis of space-occupying renal lesions (author's transl)].

Two dimensional ultrasound echography is a reliable method for demonstrating the topography of retroperitoneal space-occupoing lesions which causes little inconvenience to the patient. This is particularly the case in the upper abdomen, where the differentiation between renal, suprarenal, pancreatic and splenic lesions has been difficult. The criteria for the differential diagnosis of sonographic findings are described and discussed. Echography should be used before invasive methods, particularly angiography, are employed.

Adenocarcinoma↗
PubMed1976

[The radiological appearances of caustic burns in the upper intestinal tract (author's transl)].

Seventy-three caustic burns of the upper gastrointestinal tract were divided into early and late effects; the radiological findings were analysed and, as far as possible, compared with the endoscopic results. The central role of radiology proved to be indisputable, particularly for the demonstration of a perforation, for the control of treatment by drugs or dilatation and before surgery. Endoscopy is of particular value in the diagnosis of caustic burns if the radiological findings are negative, for following treatment and for clarifying atypical late changes in order to exclude malignant degeneration.

Adolescent↗