[Ultrasonography in the diagnosis and treatment for kidney cancer].

In the structure of all malignant tumors cancer of the kidney takes more than 3%. Among malignancies of the urogenital system, kidney cancer inferiors by frequency just to cancer of the prostate and bladder. The incidence of kidney cancer ranges from 2.0 to 12.0 per 100,000 of the population. The degree of the local spread of tumor process as well as the presence of regional and distant metastases cause a different approach to treatment of these patients.

Morphology of placental villi and development of hemorrhages in very small preterm newborns.

We performed a comparative morphometric and immunohistochemical studies of the placentas collected in preterm labor after 27-33-week gestation. Predominating branched angiogenesis processes and more pronounced vascularization of the placental villi were found in the group of newborns with hemorrhagic complications. These changes were paralleled by high expression of VEGF in all villous structures.

[Ultrasound diagnosis of acute cancer-related colorectal obstruction]. / Ul'trazvukovaia diagnostika ostroi tolstokishechnoi neprokhodimosti opukholevogo geneza.

Partial or complete obstruction was diagnosed by means of sonography with water filling (hydrosonography) in 48 patients with rectal or colonic cancer. The procedure appeared highly effective in detecting pathological lesions larger than 1.0 cm. It may be useful under urgent surgical conditions as a method of choice in diagnosing the nature of lesion, size, endophytic growth or grade of invasion. Hydrosonography using retrograde contrast filling may considerably enhance the potential of standard and transabdominal scanning.

[Possibilities of ultrasound diagnosis of esophageal cancer].

The investigation was undertaken to estimate the possibilities of the current ultrasound study (USS) in patients with esophageal cancer for its specifying diagnosis and the evaluation of the efficiency of performed treatment. The paper gives data on the current possibilities of ultrasound diagnosis in patients with esophageal cancer, which, during one study, makes it possible to visualize the tumor, to characterize its sizes and structure, to reveal enlarged regional lymph nodes, and to evaluate the oropharynx and abdominal organs. A definite USS program was used to examine 54 patients with verified esophageal cancer (42 (77.8%) men and 12 (22%) women aged 53 to 76 years). The patients' mean age was 65.3 +/- 4.8 years. The upper, middle, and lower esophagus was involved in 7 (13%), 41 (76%), and 6 (11%) patients, respectively. Most examinees had stages III and IV, received combined chemoradiation therapy. There was satisfactory and good visualization of middle esophageal tumor in 88% of the patients. USS identified enlarged paraesophageal lymph nodes in 22%. Enlarged nodes in the neck and supra- and subclavicular areas were detected in 16 (30%) patients, including 10 patients with stage IVa.