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Biomedical subjects

E V Krivenko

Publications and source records attributed to E V Krivenko.

At least 19 recordsLinked to original sources
PubMed1992

[The degree of tumor vascularization as a prognostic factor of the efficacy of neoadjuvant polychemotherapy in breast cancer].

A procedure for obtaining microcirculation coefficient is described. It is based on the phenomenon of formation of a focus of radionuclide hyperfixation on scintigrams of tumor area due to embolization of its arterioles and precapillaries with radionuclide. The method was used in 26 breast cancer patients before neoadjuvant chemotherapy. A direct correlation between the microcirculation coefficient and degree of tumor-induced pathomorphosis of tumor cells was established. The coefficient values proved more or less predictive of tumor response to chemotherapy.

Adult↗
PubMed1991

[New methods of image creation in the diagnosis of superior vena cava syndrome].

A program for the examination of patients with the superior vena caval syndrome, including digital subtraction angiography and computed-tomographic phlebography, is discussed. A combination of these methods is optimal and makes it possible to obtain detailed diagnostic information which is necessary for determining the therapeutic tactics in cases with the compression syndrome.

Adolescent↗
PubMed1991

[Study of the renal venous outflow using digital subtraction angiography].

A venous phase of digit subtraction angiography (DSA) of the kidneys was evaluated in 87 urologic patients. The subtraction allows satisfactory visualization of the renal veins. Amplification of the image and its early emergence indirectly suggest pathological arteriovenous shunt confirmed by intraoperative rheography. Investigation of the renal veins and venous outflow from the kidneys with DSA bears sufficient information and is less traumatic versus standard retrograde venography.

Adult↗
PubMed1991

[Combined digital subtraction angiography and cholangiography in assessing the spread of the tumor process in pancreatobiliary cancer].

The paper is concerned with comparative assessment of the efficacy of digital subtraction angiography and routine angiography in assessing tumor spreading in pancreatobiliary cancer. A combined method of digital subtraction angiography and cholangiography was developed and performed in 41 patients with pancreatobiliary cancer permitting maximum information on the topical location and spreading of a tumor process. The clinical importance of the obtained results permitted recommending simultaneous digital subtraction angiography and cholangiography in patients with hepatobiliary cancer.

Ampulla of Vater↗
PubMed1990

[Roentgeno-endovascular prosthetics of the superior vena cava in compression syndrome].

The paper discusses the first Soviet experience of transcatheter intravascular application of endoprosthesis into superior vena cava for compression with paratracheal lymph nodes in a patient suffering Hodgkin's disease. The patient had failed to respond to 3 cycles of combination chemotherapy and 46 Gy of radiation to the mediastinum. Application of the procedure brought the vascular lumen and blood flow to normal which led to regression of compression syndrome. The self-fixing endoprosthesis dilates and forms an interior frame for the vessel thus preventing relapse of compression in case of progression of disease.

Blood Vessel Prosthesis↗
PubMed1988

[Phlebography of the mediastinum in lung cancer].

The state of the major mediastinal veins was studied in 113 patients with central cancer of the right lung upper lobe with metastases to the regional lymph nodes. Routine angiography was performed in 92 patients, digital subtraction angiography--in 21 patients. Vascularization was shown to be more common in and adenocarcinoma. The authors identified 2 groups of angiographic signs: marked and doubtful ones. They have been of opinion that only the presence of marked signs can be a contraindication for surgical intervention. The informative value of routine angiography was compared with that of digital subtraction angiography.

Adenocarcinoma↗
PubMed1984

[Combined diagnosis of kidney tumors].

A total of 127 patients were examined to determine the efficacy of the use of sonography, angionephroscintigraphy and roentgenocontrast angiography in renal tumors and the importance of these methods in diagnostic studies with suspicion for a renal tumor. All the patients were given ultrasound and radionuclide examination, 86 roentgenocontrast angiography. The study has shown a high sensitivity of all three methods in the diagnosis of sizable renal lesions though each one has a different diagnostic tendency. In vascularized tumors the combined use of sonography and angionephroscintigraphy practically ensures 100% diagnosis in a patient even at the out-patient stage of examination. The main difficulties occur in the differential diagnosis of hypovascular sizable tumors when the comparison of the results of all three methods makes it possible to establish correct diagnosis. The advantage of sonography is the absence of traumatism, that of angiography a possibility to determine the functional activity of both involved and intact kidneys. Roentgenocontrast angiography plays the leading role in defining the involvement of the renal and cava inferior veins by a tumor thrombus.

Adult↗