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Biomedical subjects

S A Bal'ter

Publications and source records attributed to S A Bal'ter.

At least 19 recordsLinked to original sources
PubMed1990

[Ultrasonically guided aspiration biopsy in the diagnosis of liver tumors].

The paper is concerned with the analysis of the results of sonographically guided biopsy of hepatic tumors which had been carried out in 30 outpatients suffering primary cancer of the liver (3 cases), metastases (16), lymphosarcoma (2), cysts (2), adenoma (2), hemangioma (4) and hydatidiform mole (1 patient). The sensitivity of the method in tumor diagnosis was 89%, specificity--80%. Ultrasonographic features of the liver pathologies were studied versus morphologic type. Indications and technical requirements for ambulatory ultrasonographically guided biopsy of the liver are discussed.

Adult↗
PubMed1989

[Ultrasonic tomography in the diagnosis of diseases of the thyroid gland].

The paper deals with the characteristics of application of microwave computed tomography in diagnosis of most frequent tumors of the thyroid gland in 146 surgical cases. The role and scope of microwave studies carried out in dynamic monitoring thyroid cancer patients to assure early detection of metastasis and recurrence are discussed.

Adenocarcinoma↗
PubMed1987

[Complex preoperative diagnosis of the dissemination of stomach cancer to abdominal and retroperitoneal organs and tissues].

An analysis of 136 cases of stomach cancer led to the determination of the role and place of gamma-topography, echography, computerized x-ray tomography, angiography and laparoscopy in specified preoperative diagnosis of extra-organ spreading of primary tumors. The informative value and shortcomings of certain methods were shown. A high accuracy of the entire set of diagnostic procedures (94.8%) in the preoperative definition of stomach cancer involvement of the abdominal and retroperitoneal organs and tissues was emphasized.

Abdominal Neoplasms↗
PubMed1987

[Ultrasonic tomography in the diagnosis of pancreatic cancer].

The results of an ultrasonic tomographic study of 77 patients are presented. Cancer of the pancreas was identified in 50 patients. The diagnosis was verified by a complex examination and surgical evidence. The histological pattern of tumor was identified in 28 cases. The diagnosis of pancreatic carcinoma was confirmed by ultrasonic tomography in 42 cases, the sensitivity of the procedure being 88%, specificity-81%. In cases of chronic pancreatitis, the sensitivity proved 70%, thus requiring a complex approach to differential diagnosis between the two pathologies.

Chronic Disease↗
PubMed1986

[Potential ultrasonic study in the early diagnosis of rectal cancer recurrence].

The paper is concerned with the results of ultrasonic tomography carried out in 487 radically-operated cases of rectal cancer. Tumor was detected in 103 out of 136 patients with clinically manifest recurrence (76.9%) (group 1). False-negative reports were made in 19 cases of intraintestinal relapse (14.2%). The procedure provided most information in male patients who had undergone extirpation of the rectum; a correct diagnosis was made in 86.2%. In application of ultrasonic tomography, early tumor recurrence was detected in 67 out of 353 surgical cases with unfavorable prognosis who were free of relapse symptoms (18.9%) (group 2). Misinterpretation of data obtained by complex scanning procedures may be avoided thanks to application of "real-time" regimen.

Adolescent↗
PubMed1986

[Possibility of evaluating the degree of dissemination of malignant tumors of the bladder using ultrasonic tomography].

The paper discusses the results of an analysis of degree of bladder cancer expansion with the aid of ultrasonic tomography. The results of tomography were compared with surgical and pathohistologic findings. The study group included 94 patients with bladder cancer. Stages A, B, and C were distinguished on the basis of tomographic features, which correspond to T1, T2, T3 and T4 according to TNM system. Application of ultrasonic tomography in conjunction with other diagnostic procedures offers more advantage in selecting an adequate stage-oriented treatment. The tomographic examination findings were confirmed in 80.7% for stage A (T1), 81.9%--stage B (T2) and 93.4% for stage T (T3 and T4).

Diagnostic Errors↗
PubMed1985

[Evaluation of the effectiveness of preoperative polychemotherapy of nephroblastomas in children by angiography, ultrasonic tomography and computed tomography].

The results of preoperative polychemotherapy of nephroblastoma in 14 children are presented. Ultrasonic tomography, computed tomography and angiography were performed in all the patients before and after medication. The findings on the efficacy of polychemotherapy were assessed on the basis of surgical evidence and, in particular, resected material examination. A high diagnostic value of all the methods was demonstrated and criteria of the effectiveness of preoperative polychemotherapy as evaluated by application of ultrasonic and computed tomography and angiography were worked out. Optimal terms of carrying out diagnostic procedures in patients with nephroblastoma during preoperative treatment are suggested.

Angiography↗
PubMed1984

[Ultrasound tomography in the topical diagnosis and evaluation of results in the treatment of patients with stage III and IV ovarian cancer].

The paper describes an experience with ultrasonic tomography of the abdominal cavity and small pelvis in 34 cases of stage III and IV ovarian cancer who received polychemotherapy. In application of the said procedure, the topography and size of primary and disseminated tumors were ascertained and the immediate effect of medication assessed. The results of ultrasonic tomography were analysed in combination with other methods of research.

Adult↗