[Radiologic localization of pancreatic insulinoma].

Thirty-one patients with insulinoma of the pancreas verified during operation were examined. The localization of the tumor was detected by ultrasonic examination in 9.7%, by X-ray computed tomography in 38.

[Radiologic diagnosis of non-Hodgkin's lymphoma in abdominal and retroperitoneal sites].

A total of 112 patients with non-Hodgkin's lymphomas of abdominal and retroperitoneal localization were examined by the ultrasonic and x-ray methods, in 83 of them x-ray computer-aided tomography was used. Angiographic examinations and puncture biopsy monitored by US or x-ray CAT were carried out if indicated. The authors discuss the problems of ultrasonic and x-ray semeiotics of the lymphomatous involvement of the lymph nodes, spleen, gastrointestinal tract.

[The current diagnostic aspects of abdominal aortic aneurysms].

Based on diagnostic data in 35 patients with abdominal aortic aneurysm, which were obtained during ultrasonic scan echography, X-ray computed tomography and radioopaque angiography, and on their comparison with intraoperative findings, a diagnostic algorithm for examinations has been developed, which enables errors in the diagnosis to be excluded. The major diagnostic technique for abdominal aortic aneurysms has been found to be X-ray computed tomography which provided no errors in the assessment of the extent of aneurysms and the presence of their complicating components in all 35 patients. In high aneurysms of the abdominal aorta and suspected stenoses in the visceral, renal, and iliac arteries, X-ray computed tomography should be supplemented by radioopaque angiography to clarify the status of aortic branches.

[Radiologic methods in the diagnosis of diseases of the spleen].

Ultrasonic and computer-aided tomographic examinations of 2457 patients with suspected diseases of the abdominal cavity organs have revealed splenic involvement in 48. The sensitivity of ultrasonic technique for the detection of splenic diseases has made up 70.8%, that of computer-aided tomography--95.

[Ultrasonic diagnosis of non-Hodgkin's lymphoma].

Analyzes the results of ultrasonic examinations of 111 patients with various forms of non-Hodgkin's lymphomas. Reviews ultrasonic semeiotics of non-Hodgkin's lymphadenopathy of the abdominal cavity and retroperitoneal space and of extranodal variants of lymphoma course (with involvement of the spleen and stomach). Suggests the most safe method for precision diagnostic aspiration biopsy of the spleen monitored by ultrasound.

[A complex x-ray endoscopic study in complicated cholelithiasis].

Recurrent or residual choledocholithiasis was diagnosed in 202 patients with a history of cholecystectomy, in 148 cases this condition was combined with papillostenosis. Transfistula extraction of the concrements and endoscopic papillosphyncterotomy helped achieve cure of 186 (92%) patients without relaparotomy. The authors discuss the role of roentgenology in such combined x-ray and endoscopic diapedetic examinations and emphasize its role in identification of the diagnostic details that are so important for the choice of the optimal treatment strategy.

[Ultrasonography and computed tomography in the detection of overlooked gauze surgical dressings].

USI and CT were performed in 14 patients with textile foreign bodies left in the abdominal cavity and retroperitoneal space during operation on the biliary tracts (6 cases), kidneys (4 cases), pancreas (2), stomach (1), and during appendectomy (1). A decisive sign in USI that enabled one to detect gauze foreign bodies, was a stable echogenic zone corresponding to a proximal body contour with a solid acoustic shadow behind. Extra-organic localization of these changes contributed to making diagnosis.

[The ultrasonic diagnosis of textilomas].

The article analyses ultrasonic symptomatology of textile foreign bodies which were left in the abdominal cavity and retroperitoneal space during surgical interventions in 10 cases. An intensive distal acoustic shadow behind a space-occupying echogenic structure in the main sign of a foreign body. Two variants of the echotomographic picture are distinguished.

[Ultrasonics in the diagnosis of stomach tumors].

Proceeding from analysis of over 2000 ultrasound investigations (USI) the role of this method in the diagnosis of stomach tumors was defined (employed during routine investigation of the abdominal cavity and as a procedure with liquid filling of the stomach cavity). Ultrasound semiotics of a neoplastic process of the stomach was described. USI can be used for screening and specification.

[Possibilities of computerized tomography in the diagnosis of gastric tumors].

On basis of experience in computed tomography (CT) of the stomach in 76 individuals, in 44 of whom gastric tumors were diagnosed, the possibilities of this method in the recognition of this pathological condition are discussed. The authors discuss in detail their own method of CT of the stomach, which combines elements of the classical gastroroentgenology and the specific features of CT characteristic of it as an independent method. The method is based on fractional contrasting of the gastric lumen by introducing air through a nasogastric catheter.

[Radiological diagnosis of tumors of the adrenal glands].

Radiation methods were used for examining 176 patients with hormonal-active tumors and 12 patients with hormonal-nonactive tumors. The correct diagnosis of tumor of the adrenals was established with the help of oxysuprarenography in 51.9%.

[Computed tomography in the diagnosis of endophytic cancer of the stomach].

The authors discuss the potentialities of CT in the diagnosis of endophytic stomach cancer. They proposed a method for CT of the stomach based on a pneumatic study of its lumen via a nasogastric probe with graded inflation and repeated CT imaging. The major CT-semiotics of endophytic stomach cancer were obtained.

[Fluorescence characteristics of DNA complexes with dyes of the bis-benzimidazole series].

Fluorescence characteristics of DNA-specific dyes of bis-benzimidazole type in a wide range of pH and r = C/P were investigated. Fluorescence spectra of DNA complexes with bis-benzimidazoles have elements of a structure, which may result from a superposition of the spectra of dye molecules in different protonization group states that form different types of complexes with DNA. Experimental data do not contradict the idea of bis-benzimidazole dye binding into the minor groove of DNA.

[Ultrasonic diagnosis of ureterocele].

Diagnostic ultrasonic investigation has found many applications in routine urologic practices. The use of ultrasound for the investigation of 19 patients with ureterocele is reported. High diagnostic value, simplicity and noninvasiveness of echographic diagnosis of this congenital malformation of distal ureteral portions and related complications are pointed out.

[Ultrasonic study of the bile ducts in patients after cholecystectomy].

Ultrasonic examination (USE) of the bile tract was conducted in 287 patients with removed gallbladder. The choleretic test based on comparative appraisal of the lumen of the bile ducts before and after medication with pharmacological agents stimulating bile secretion was performed in 167 cases to increase the USE efficacy. USE allowed choledocholithiasis to be diagnosed in 24 of 30 patients and obstruction of the bile ducts in 60 of 67 patients.