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Biomedical subjects

E Bücheler

Publications and source records attributed to E Bücheler.

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

[Angiography in abdominal diseases (author's transl)].

Angiography of arteries and veins in the abdominal and retroperitoneal compartement is a valuable routine roentgenologic procedure. Its value in the diagnosis of vascular disorders is apparent. Regarding space occupying lesions in the abdomen angiography is an aid in diagnosis and differential diagnosis and provides information on the curability. Visualization of the venous system will give mainly information on the extent of a tumor. For an evaluation of portal hypertension the arterial indirect visualization of the portal venous system is superior to the direct percutaneous splenoportography. In the acute gastrointestinal bleeding selective angiography is able to demonstrate the bleeding site.

Abdomen↗
PubMed1978

[Experiences with transcatheter emoblization in urology (author's transl)].

Transcatheter embolization of the kidneys and bladder is increasingly important. The main indication for embolization is persistent hematuria involving surgically nonaccessible renal and bladder cancer. Additional surgical management of the disease can be avoided. Another indication is the preoperative embbolization of the kidney which facilitates surgical procedure and possibly prevents tumor cell embolization in the venous circulation. The indication for embolization of bleeding bladder carcinoma is different and permanent arterial occlusion is only justified if other measurements fail.

Adult↗
PubMed1978

[Diagnostic prerequisites of hyperselective vagotomy (author's transl)].

On admission to hospital the radiologic diagnosis of ulcer in 640 patients (407 duodenal ulcer, 233 gastric ulcer) was supplemented by means of gastroduodenoscopy in 207 cases; ERP was performed in few cases. In 51 patients with the initial radiologic diagnosis of duodenal and 28 gastric ulcer (12,3%) decisive alterations of the operative tactics based on the initial diagnosis were made. The differences in the findings neither discredit nor favor one or the other diagnostic procedure. The necessary collaboration between radiologists, endoscopists and surgeons is based, as usual, on technical perfection. When no such prerequisite is available the radiologic diagnosis should be optimized or supplemented through an endoscopic examination.

Duodenal Ulcer↗
PubMed1977

[Radiological diagnosis of mediastinal tumors (author's transl)].

In most cases mediastinal lesions can correctly be differentiated from tumor simulating conditions. Their effect on normal anatomical structures of the mediastinum can be revealed by different methods; but separating benign from malignant masses on the base of the radiological findings is not reliable enough.

Angiography↗
PubMed1977

[Radiological observations of the chest in progressive scleroderma (author's transl)].

All available chest radiographs of 50 patients with progressive scleroderma have been freshly evaluated. In 28 cases (56%), pulmonary involvement was diagnosed; its type and severity was classified according to the specimen films of the ILO-U/C 1971 classification for pneumoconiosis. Serial observations in 27 patients spanning a period of one to 21 years have shown that the course of the disease in the lung is unpredictable. Rapid progress of fibrosis is, however, uncommon. Two radiological appearances in the thorax, which are not specific, but are found predominantly in scleroderma are: 1 an air oesophagram on the lateral thorax film (8 cases) and erosions of the upper rib margins (5 cases). The importance of radiological examination lies in the fact that it confirms the clinical diagnosis and that it may indicate the cause of an otherwise undiagnosed pulmonary fibrosis.

Adolescent↗
PubMed1977

Selective hypothermic perfusion of the kidney for intrarenal surgery.

Clinical experience and physiological consideration of selective hypothermia for conservative renal surgery are described. While surface cooling is satisfactory for relatively short ischaemia times, continuous renal perfusion via catheters offers the best wash-out and a completely bloodless field for lengthy surgical procedures. This is demonstrated by a comparison of three different methods of renal hypothermia in somewhat similar cases. During the last 6 years we have successfully used a continuous perfusion technique by direct introduction of catheters into the renal vessels in 16 selected cases. Advantages and drawbacks of this method are discussed.

Adult↗
PubMed1977

Renal hamartoma: therapeutic aspects.

Hamartomas are benign renal tumors. In most cases they can be diagnosed by means of angiography. Treatment varies in accordance with clinical manifestation and progression. Symptom-free hamartomas need no treatment. In case of bleeding, embolization may be performed. Nephrectomy ought not to be performed save in emergency or if malignancy is suspected.

Adolescent↗
PubMed1977

[Diagnostic radiology for tumors for the small intestine(author's transl)].

The fractionated gastrointestinal tract presents technical problems which result in a large number of diagnostic errors in regard to tumors of the small intestine. Pharmacoradiologic processes and Sellink's sounding method deal successfully with these problems. The methods were described and their advantages for tumor diagnostics in the small intestine were stressed. The mesenteric angiography is important as an alternative and supplementary examination for small intestine diagnostics. Indications and interpretation possibilities were described.

Adenoma↗
PubMed1976

[Diagnosis and therapy of liver echinococcus (author's transl)].

From 1970 to April 1975 42 patients were treated for Echinococcus of the liver at the Bonn University Dept. of Surgery. There were 33 cases of E. cysticus and 9 cases of E. alveolaris. These two types of Echinococcus, different in parasitology and epidemiology present different clinical manifestation of disease with different course and prognosis. Angiography with celiaco- and superselective hepaticography are decisive for diagnosis. Therapy can only be surgical with total removal of the parasites. In E. cysticus this is almost always possible by enucleation-resection or pericystectomie following evacuation of the cyst and instillation of 20% sodium-chloride or formaldehyde. Such radicality is the exception in E. alveolaris. Here partial resections, biliodigestive and hepatodigestive anastomoses as palliative measures are carried out predominantly to ensure bile passage.

Adult↗
PubMed1976

[Catheter embolisation of renal tumours (author's transl)].

Arterial embolisation of renal tumours with foreign particles is described. This involves occlusion of the arteries supplying the tumour through a catheter introduced by the trans-femoral route. Pre-operative and therapeutic embolisation should be distinguished. During pre-operative embolisation, the kidney should be totally occluded by the foreign particles in order to obtain a bloodless operation zone and in order to avoid the much feared production of tumour emboli. Because of the clinical consequences of renal artery emboli, this procedure should be carried out immediately before the operation. During therapeutic embolisation, which is not followed by an operation, only those vessels supplying the tumour should be occluded in order to avoid the complications of a renal embolus. Ischemia of the tumour and less rapid growth may then be excluded.

Adenocarcinoma↗
PubMed1976

[The angiographic investigation of duodenal tumours (author's transl)].

The diagnosis and differential diagnosis of primary duodenal carcinomas by conventional radiological methods is difficult. Valuable information can be obtained by angiography, since primary duodenal carcinomas, unlike carcinomas of the papilla and pancreas, are characterised by the formation of pathological vessels arising from the duodenal branches of the gastro-duodenal artery. The integrity of the latter is an important differentiating feature. Exact localisation of the tumour is important in pre-operative assessment and diagnosis.

Adult↗
PubMed1976

[The radiology of traumatic pneumatoceles. Pathogenesis and course (author's transl)].

The development and course of traumatic pneumatoceles was followed radiologically in four patients. The interval between the trauma and a recognisable cystic space varied. The patients had in common the fact that they were young, had suffered a serious road accident and developed haemoptysis. In one patient a lobe had to be resected, in the other spontaneous regression occurred within four weeks.

Adult↗
PubMed1976

[Anomalies of the inferior vena cava (author's transl)].

After a detailed account of the developmental anatomy of the inferior vena cava, which arises from various segments, an attempt is made at a systematic classification of anomalies of the inferior vena cava. For this purpose, the angiographic appearances and available literature have been considered. The following anomalies have been distinguished: 1. left-sided position, 2. duplication, 3. anomalous insertion into the left atrium, 4. agenesis and 5. stenosis and occlusion.

Adult↗
PubMed1976

[Therapeutic angiography].

In arterial or venous hemorrhages of the upper gastrointestinal tract, pharmacotherapy and catheter embolization are alternative methods if conservative treatment proves ineffective and surgery offers no prospect of success. A stop in the acute arterial or venous hemorrhage from the upper gastrointestinal tract -- even though only temporary in most instances - may thus be achieved. The choice of one of the two methods and the result depends on the location of the hemorrhage, the age of the patient and the coagulation qualities of the blood. Experience in this respect is quite new, experience which - in spite of all criticism - justifies a modest amount of optimism particularly in view of the desparate situations one is frequently confronted with in acute gastrointestinal hemorrhage.

Angiography↗