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Biomedical subjects

B Kramann

Publications and source records attributed to B Kramann.

At least 91 records · Page 5Linked to original sources
PubMed1978

Endoscopic retrograde pancreaticocholangiography in chronic diseases of the pancreas and in papillary stenoses.

The extensive experience of the authors in endoscopic retorgrade pancreaticography is correlated with data in the literature to illustrate the spectrum of characteristic changes and diagnostic accuracy in several entities. These include chronic pancreatitis, calculous pancreatitis, necrotizing lesions and pseudocysts, carcinoma of the pancreas, and papillary stenosis, spasm, and carcinoma.

Acute Disease↗
PubMed1978

[Neurofibroma and neurofibrosarcoma in Recklinghausen's neurofibromatosis].

The neurofibromatosis von Recklinghausen is a systemic disease, which can cause various different changes in the body. The case report of a female patient shows all the typical signs of neurofibromatosis von Recklinghausen. These signs are café-au-lait spots, congenital tibia pseudarthrosis, abdominal plexiform neurofibromatosis and peripherical neurofibromas with sarcomatous degeneration.

Adult↗
PubMed1978

[Experience with transvenous xeroarteriography in vascular surgery (author's transl)].

The edge contrast pattern in Xeroradiography allows blood vessels to be delineated with highly reduced concentration of radiopaque fluid. The contrast material is injected rapidly into a cubital vein. The brachial arteries are opacified 3--8 sec. and the femoral arteries about 7--15 sec. after the injection is finished. The arteriograms are of good quality which equals direct conventional angiography, if the vessels are not overlayed by bone structures. Thus the popliteal artery can be judged best in lateral view. The indications for transvenous Xeroarteriography are preoperative diagnosis especially in high risk patients, angiographic diagnosis of soft tissue tumors and postoperative control and documentation of vascular reconstruction in the extremities. Transvenous Xeroarteriography is a really noninvasive, painless and easy to handle method whiich allows visualization of peripheral vascular lesions and can be reproduced at short intervals without any risk.

Angiography↗
PubMed1978

[Intravenous arteriography with xerography: a non-invasive method for the demonstration of peripheral vessels (author's transl)].

Acceptable arteriograms of the extremities can be obtained by rapid manual injection of contrast into a cubital vein, using a xeroradiographic technique. The indications and value of the method have been demonstrated in 62 examinations. The new technique constitutes a non-invasive arteriographic method suitable for demonstrating limited vascular lesions in the extremities.

Angiography↗
PubMed1978

[A benign tumor of the kidney (author's transl)].

In discussing the frequency of kidney adenomas we present a rare case of a large oncocytoma, with all diagnostic and therapeutic aspects. The special angiografic picture of thistumor seems to be important. Furthermore the criteria for malignancy of epithelial tumors of the kidney are discussed.

Adenoma↗
PubMed1977

[Complication with contrast medium in endoscopic retrograde cholangiopancreaticography (author's transl)].

After more than 2000 endoscopic retrograde cholangiopancreaticographies (ERCP) without contrast medium allergy, a case of severe allergic shock induced by contrast medium injected into the pancreatic duct is reported. The indication for ERCP in patients with known allergy to contrast media must therefore be restricted to those cases in which other examination procedures have given no useful results and yet diagnostic evaluation is vital to the interests of the patient.

Cholangiography↗
PubMed1977

[Transvenous xero-arteriography of the limbs (author's transl)].

Well-visualised arteriograms of the limbs can be obtained by xeroradiography after rapid manual injection of contrast-medium into an arm vein, as demonstrated in 28 patients. The technique is suitable for the diagnosis of circumscribed vascular lesions. It is simple to do and does not significantly distress the patient.

Adolescent↗
PubMed1977

[Basic pressure in the pancreatic duct and in the bile duct: results from 50 standardized duodenoscopic transpapillary pressure measurements (author's transl)].

In 90 patients pressure measurements in the pancreatic duct (50 cases) and in the common bile duct (20 cases) were performed endoscopically. In the normal pancreas an averaged basis pressure in Wirsung's duct of 22.2 cm H2O was found with a range of 9.6 to 37.0 cm H2O. In two cases of marked chronic pancreatitis and in one case of pancreatic carcinoma the secretion pressure was considerably diminished. The mean basic pressure of the common bile duct amounted to 12.0 cm H2O with a range of 7.3 to 17.0 cm H2O. The pressure values in the duodenum were found to be considerably lower than in the pancreatic duct and the bile duct; they amounted to 5.3 cm H20 with a range of 0.6 to 10.9 cm H20. In both ducts two different patterns of ondulations were found: tracings of slight ondulations, i.e. slow pressure changes with a constant average pressure and tracings of coarse ondulations with quick increase and drop in pressure. It will be discussed, how these findings can be related to physiology and pathophysiology of the pancreatic and biliary duct system. The clinical relevance for detection of excretory insufficiency of the pancreas and of pathologic changes leading to stenosis of the duct system are considered.

Adult↗
PubMed1977

[Transvenous xerotom-angiography of the pulmonary hilus (author's transl)].

Normal-size lymph-nodes and air-filled bronchi do not contribute significantly to the shadow of the normal hilus. This consists mainly in pulmonary arteries and veins of the upper lobes. Any enlargement beyond the vascular shadow has to be considered as pathologic. Xerotom-angiography following injection of contrast medium into the cubital vein shows the pulmonary vessels near the hilus more clearly. Pulmonary arteries towards the truncus are better shown. This improves the clarity of the hilus. Coincident demonstration of the superior vena cava may show pathologic processes in the upper mediastinum.

Angiography↗
PubMed1975

[Measurement of renal blood flow with the Anger scintillation camera after selective intra-arterial injections of 133xenon and 99mtechnetium].

A "region of interest" technique for measuring renal blood flow is described, using as Anger camera and selective intra-arterial injection of 133Xe and 99mTc. The sequence of measurements has the advantage of providing information on regional blood flow. The values for RBF and RBFD obtained with 133Xe agree with those in the literature. Selective determination of the RCBF with the "region of interest" technique using 133Xe was not possible. Mean transit time for 99mTc was calculated after correction of the 99mTc indicator dilution curve with respect to recirculation and background activity. All typer of pathological changes in the kidney showed a statistically significant increase in mean transit time when compared with a control group. In patients with uncomplicated essential hypertension, the mean transit time was signigicantly reduced. A comparison of the mean transit time of 99mTc with the haemodynamic parameters derived from the 133Xe studies, and experiments with pharmocologically induced vasoconstriction indicates that the mean transit time represents a measure of the RCBF.

Adolescent↗
PubMed1975

[Pancreatic carcinoma on endoscopic retrograde pancreatico-cholangiogram (author's transl)].

The pancreaticographic appearances of carcinoma of the pancreas have been divided into two types: 1. Canalicular carcinoma arising from the duct system. If arising from the main pancreatic duct, it occludes this, or causes displacement or deformity of its branches in the immediate neighbourhood. If arising from branches, it causes cystic ectasia of the minor ducts; these appear fragmented and deformed while there is stenosis and displacement of the main duct. Simultaneous origin from the main and smaller ducts, as in the Gallert carcinoma, causes extreme lacunar ectasia of the minor ducts and occlusion of the main duct. 2. Carcinoma arising from the acinar epithelium. This causes primarily displacement and the secondarily stenosis of the main duct. Accuracy of ERCP is satisfactory. It is limited by technical failure or difficulties due to the pathology preventing demonstration of the pancreatic duct. It is increased by cytological examination of aspirated pancreatic secretion. Difficulties in the differential diagnosis from chronic pancreatitis can be overcome. The possibility of an early diagnosis of the carcinoma presented by this method loses some of its impact because the patients are seen at a late stage and because of the lack of early symptoms of this disease.

Adenocarcinoma↗
PubMed1975

The diagnosis of necrotizing pancreatic lesions by means of duodenoscopic pancreatography.

Direct demonstration of intrapancreatic abscesses and pseudocysts can be made by means of duodenoscopic retrograde pancreatography. The most important findings are escape of contrast medium from the duct system into a cavity and its visualization, the tryptic perforation of one or more ducts and the concomitant deformity which may be general or limited to the vicinity of the lesion. The differential diagnosis of pancreatic abscess and carcinoma with penetration of contrast medium in the tumor tissue is supported by the fact that the contours of a necrotic cavity are rather well defined, whereas in carcinoma the extraductal opacification is diffuse. As a rule in a necrotic lesion the ductal system is distorted locally or the whole excretory duct system may be involved. In carcinoma the ductal system generally appears normal distally to the tumor. Accurate demonstration of the necrotic lesion, the assessment as to its localization and size are of decisive importance for indication and choice of the surgical procedure.

Abscess↗
PubMed1975

[Pancreaticography and its correlation with angiography and ultrasonography in diagnosis of the pancreas (author's transl)].

The endoscopic retrograde pancreaticography demonstrates - when suspecting "pancreas anulare" - the part of the pancreatic duct system that forms a ring around the duodenum, helping to recognize this anomaly. In chronic pancreatitis deformities of the pancreatic ducts may be visualized 2-3 years after the onset of the disease. There are deformities of the outlining and the course of the ducts as well as solitary and multiple stenosis and -most important- dilatation of the main duct and its branches. In pancreas abscess, necrotic cavities, and pseudocysts the retograde pancreaticography visualizes solitary or multiple perforations of the duct and pooling of contrast medium in cavities. Carcinoma of the pancreas presents stenosis, occlusion and deviation of the main duct and its branches and sometimes with lakes of contrast medium in ares of necrosis. Pancreaticography following trauma demonstrates similar to chronic pancreatitis laking of contrast medium following perforation. The endoscopic retrograde pancreatico-cholangiography has - like angiography and ultrasound - its special indications in diagnosis of the pancreas. They are important in cases which have affected primarily or secondarily the duct system. Its reliability in confirming and differentiating a disease increases with more accurate indication. In this journal in 1965 a critical review of roentgenologic examinations of the pancreas presumed that development of a valid preoperative pancreaticography would lead to priority of this method. This priority has become true in chronic pancreatitis, calculous pancreatitis and visualization of necrotic cavities. In those examples the endoscopic retrograde pancreatico-cholangiography is still not dominating all cases.

Angiography↗