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Biomedical subjects

S Feuerbach

Publications and source records attributed to S Feuerbach.

At least 163 records · Page 9Linked to original sources
PubMed1982

[Head and neck cancers. What's new in clinical oncology for the practicing ENT physician?].

An interdisciplinary evaluation is made of the most common forms of head and neck cancer, with emphasis on certain aspects.--In the field of x-ray diagnostics, computed tomography dominates varying importance being given to the individual organs. Nuclear medicine pays particular attention to skeletal scintigraphy and gallium scintigraphy. In radiation therapy, progress has been made especially through the use of optimal radiation planning as well as the use of the after-loading technique and neutron radiation. Antineoplastic chemotherapy is currently being used as palliative treatment, adjuvant chemotherapy and as the first step towards a curative therapy.

Antineoplastic Agents↗
PubMed1981

[Computer tomographic findings in pelvic and abdominal trauma (author's transl)].

Twenty-two patients with trauma to the pelvis and abdomen were examined by computer tomography. Subcapsular haematomas, haematomas and rupture of organs, intra- and retroperitoneal haematomas and pelvic fractures could be reliably diagnosed in this way. Serial observations on the tissue density of an haematoma allows one to judge its age. Lack of contrast enhancement of an haematoma makes the injection of contrast a useful test. Computer tomography has reduced the indications for angiography in blunt abdominal trauma.

Abdominal Injuries↗
PubMed1981

[Malignant bone tumors of the pelvis and of the extremities--in conventional radiography, arteriography and computed tomography (author's transl)].

Bone tumors of the extremities are usually diagnosed by conventional radiography. A good angiogram may render information not only about intra- and extraosseous extension of the tumor, but often also about the biological dignity. CT is usually not necessary, especially since it is sometimes difficult to define the extraosseous borders of these extremity tumors with this method. In bone tumors of the pelvis, however, neither conventional radiography nor angiography render reliable information about the extent of the tumor, which CT is very well able to do. Therefore CT is primarily indicated for evaluation of bone tumors in this region. Angiography is done only for preoperative evaluation of the vascular architecture or for potential therapeutic embolisation.

Adolescent↗
PubMed1981

Evaluation of the cruciate ligaments by CT.

Delineation of the cruciate ligaments in 112 patients using the computed tomography under arthrographic conditions was reported. Special position were used allowing for the demonstration of both cruciate ligaments in their complete lengths. In 6.2% of the examinations a reliable demonstration of the cruciates was not possible for technical reasons. Demonstration of normal cruciate ligaments in CT arthrography was described and normal values were tabulated. Recent cruciate ligament injuries were seldom examined by CT arthrography since the clinical symptoms were mostly unequivocal. The old ruptures of the ACL were divided into 4 different types: Type I: Rupture of the femoral origin that adjoins the PCL. Type II: Attenuation of the intraligamentary ruptured ligament with a preservation of origin and insertion. Type III: Complete rupture with shrinking and retraction of the fragments. Type IV: Osseous involvement of the femoral origin or tibial insertion. In 36 old cruciate ligament ruptures, the sensitivity of this method of investigation was 97%, the specificity 100%. After reconstructive surgery, CT arthrography allows for an objective analysis of the operative results and permits the comparison of different techniques of surgical repair.

Humans↗
PubMed1981

Computed tomographic demonstration of venous thrombosis of different etiologies.

Typical computed tomographic signs of venous thrombosis include the demonstration of the hypodense center (20 to 45 HU) in the involved blood vessel with a hyperdense margin surrounding it. CT represents a reliable method of diagnosis complimentary to that achieved by venography. CT examination allows the visualisation of the proximal end of the thrombus and gives the etiology of the thrombus. Venous thromboses occurring for the first time demonstrate a well defined borderline around the vein with a lack of reaction in the surrounding tissue. On the other hand, recurrent venous thrombosis is characterized by an inhomogenous zone of higher density in the perivascular region. A similar image can be obtained in secondary thrombosis due to inflammatory changes from adjacent tumours. In cases of thrombosis with tumour involvement, the tumour can be demonstrated.

Adult↗
PubMed1980

[CT for staging of systemic lymphatic diseases (author's transl)].

In 75 patients with lymphoma (46 Hodgkin's disease, 29 non-Hodgkin lymphomas) computed tomography was performed in order to detect neoplastic invasion of the abdominal organs (55 new cases) or to control the results of treatment (20 cases). In 30 cases enlarged retroperitoneal or mesenteric lymphnodes and/or liver or spleen enlargement were found. Neoplastic involvement of lymphnodes without enlargement was missed in two cases. CT failed also to demonstrate microscopic malignant invasion of liver and spleen. The false-negative rate in our series was 10.9%. Computed tomography is a non-invasive method which is very well suited for staging malignant lymphoma.

Hepatomegaly↗
PubMed1980

[Computer tomographic appearances of intra-abdominal abscesses (author's transl)].

CT diagnosis of intraabdominal abscess was confirmed in 18 patients by laparatomy and in two by autopsy. In CT abscess is characterized by an expansive soft-tissue lesion with different density values, mostly with a central fluid collection and a thickened wall. The peripheral inflammatory reaction leads to obliteration of fat planes surrounding the adjacent organs. Further symptoms are contrast enhancement of the wall and extraluminal gas collection. The combination of all these signs together with a suitable history and clinical findings allow a reliable diagnosis of abscess formation. When only isolated signs are found, differentiation from tumor, pseudocyst or hematoma may be difficult.

Abdominal Neoplasms↗
PubMed1980

[CT and lymphography correlations in the evaluation of patients with testicular tumours (author's transl)].

27 patients with testicular tumours were examined by lymphography and computerized tomography for evaluation of metastatic spread in the retroperitoneal lymphnodes. A good correlation of results was found in 23 patients. In 4 cases lymphography failed to show metastatic disease, which was easily recognized by CT. In account of the lymphatic spread pathways of testicular tumours leading mainly to the lymphnodes close to the kidney pedicle CT appears to be method of choice in the staging of these patients, as the lymphnodes in this area are often not demonstrated by lymphography. Computerized tomography allows the exact localisation and extension of neoplastic lymphnodes and at the same time a good evaluation of the surrounding organs.

Dysgerminoma↗
PubMed1979

[Lymph node metastases--diagnosis by lymphography and CT (author's transl)].

The value of lymphography and CT in the diagnosis of abdominal lymph node metastases was compared in 82 patients with various types of malignant disease. In the presence of systemic disease or testicular tumours, CT increased the recognition of lymph node metastases and their extent, particularly of high para-aortic deposits which were frequently underestimated by lymphography. Lymph nodes in the pelvis are more easily identified. CT is the first choice for the investigation of systemic disease and testicular tumours. This will, in addition, also demonstrate abnormalities of the organs and assist in radiation planning. CT is a simple procedure which is also very valuable in following the effect of treatment. For metastases from other origins, lymphography is often more valuable since CT is unable to identify metastases in lymph nodes if these are not enlarged. The two methods complement each other and their combination provides improved diagnostic information.

Carcinoma, Squamous Cell↗
PubMed1979

[Percutaneous fine needle biopsy of lymph nodes (author's transl)].

Following lymphography, 76 lymph nodes were punctured percutaneously using a fine needle in 23 patients and an aspiration biopsy was performed. This simple procedure provided cytological comfirmation in cases of doubtful lymphograms. Systematic puncture of representative lymph nodes in the area of metastatic spread may at times be able to replace a staging operation.

Biopsy, Needle↗
PubMed1977

[Magnification technique in peripheral angiography (author's transl)].

Fourteen exactly similar conventional and magnified serial angiograms were compared and the advantages and disadvantages of magnification angiography are discussed. Particular attention was paid to exact comparability of the series in order to make the analysis valid. In three patients small end-vessels and collaterals were visible on the magnification angiogram which could not be seen on the ordinary series even in retrospect. Macro-angiography was also valuable in cases of microsurgery, both before and after operation. Considering the well-known disadvantages of magnification angiography, such as increased radiation and cost, its use appears to be indicated only for the elucidation of special problems.

Angiography↗
PubMedDate not supplied

MR colonography in inflammatory bowel disease.

Colonography based on magnetic resonance imaging (MRI) appears to be a promising technique for polyp assessment in the colon. Several studies have evaluated this method for colonic assessment in patients with inflammatory bowel disease. We briefly review different methodologies such as dark lumen and bright lumen techniques for abdominal MRI. In addition, recently published studies concerning the sensitivity and accuracy in detecting inflammatory bowel changes in inflammatory bowel disease using MRI are discussed.

Colonic Diseases↗
PubMedDate not supplied

Temporary Strecker stent for management of acute dissection in popliteal and crural arteries.

Stent placement is a widely used bail-out treatment for dissection of peripheral arteries. Below the level of the superficial femoral artery permanent stenting is complicated by a high incidence of subacute thrombosis and restenosis. We present two cases of arterial occlusion due to acute iatrogenic dissection of the popliteal and distal fibular arteries. Successful treatment was achieved with a new bail-out procedure. Strecker stents were implanted to seal off the dissection flap. Stents were retrieved easily after 24 hr using a myocardial biopsy forceps. After stent retrieval the temporarily stented segments were patent and showed a larger lumen compared with segments treated by balloon dilatation alone. Temporary stenting is a simple and safe procedure and offers the advantage of tacking up dissection membranes and preventing recoil. Persistent presence of a metallic implant as a source of continued injury and stimulus for intimal proliferation is avoided.

Aged↗
PubMedDate not supplied

Post-traumatic pseudocyst of the spleen: sclerotherapy with ethanol.

We report a case of successful percutaneous treatment of a chronic post-traumatic splenic pseudocyst using alcohol as the sclerosing agent. A 26-year-old man presented with a symptomatic cystic mass located in the spleen. Aspiration of 300 ml of fluid was only temporarily effective, and therefore a drainage catheter was placed 3 days later. After histopathologic and microbiologic exclusion of a malignant or infectious origin, local sclerotherapy with alcohol was performed because of recurrence after percutaneous drainage. This therapy was repeated six times within 2 weeks. Two weeks later, the remaining volume was determined to be 16 ml. Six months after treatment the cyst was no longer visible. To our knowledge this is the first case of a chronic post-traumatic splenic cyst treated with alcohol. Percutaneous sclerotherapy of a symptomatic post-traumatic splenic pseudocyst may be an alternative to surgical treatment.

Adult↗