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Biomedical subjects

A A Krapivin

Publications and source records attributed to A A Krapivin.

10 recordsLinked to original sources
PubMed2006

[Examination and surgical treatment of patients with combination of solid and liquid lesions of the kidneys].

The experience in examination and surgical treatment of 41 patients with a combination of solid and liquid lesions of the kidneys is analyzed. Complex examination (including USE, CT and MRI) diagnosed a combination of typical tumor and uncomplicated cyst of the kidney in 39 (95.12%) cases. Combination of a solid node and liquid lesion with renal cell carcinoma structure was seen in 2 (4.88%) cases. Surgical policy was individual for each patient. Patients with liquid lesions of a solitary kidney who have undergone earlier nephrectomy for renal tumor should be followed up because of risk of metachronous cancer.

Female↗
PubMed2003

[Intrarenal small tumor of the kidney].

From 1992 to 2002 four hundred and thirty-six patients with kidney tumors were treated. Tumor up to 4 cm ("small" tumor of the kidney) was diagnosed in 143 patients. Intrarenal localization of the tumor was in 35 (24.5%) of them. Two groups of patients with intrarenal tumor were are distinguished: tumor is localized intrasinusly whole (18 patients) or closer to fibrous capsule of the kidney (17 patients). In the majority of cases (31 patients) of small intrarenal tumor radical nephrectomy was performed. Four patients with absolute and relative indications to organ-saving surgery underwent nephrotomy and enucleoresection of an intrasinus tumor. Renal-cell cancer was in 3 of these patients, angiomyolipoma--in 1. All 3 patients with renal cancer are alive in follow-up for 7, 2 and 1.5 years.

Angiomyolipoma↗
PubMed1981

[Changes in the carbohydrate metabolic indices in experimental shunting of a portion of the small intestine].

The content of glycogen, histological and histochemical changes in the liver, the quantity of sugar in the blood were studied in the liver and blood serum of dogs subjected to operation of exclusion of part of the small intestine (30%, 60%). The decreased concentration of glycogen and sugar of blood was found. Depending on the volume of exclusion of the intestine, there appear changes in the hepatocyte nuclei volume influencing the cell metabolism.

Animals↗
PubMedDate not supplied

[A "small" kidney tumor].

The authors think it necessary to distinguish small tumors of the kidney--a neoplasm 4 cm in size maximum. The number of such small tumors account for 1/3 of all renal newgrowths. An important role in detection of small tumors belongs to ultrasonography. Ultrasonic finding of the tumor should be followed by spiral computer tomography with 3-dimensional reconstruction of the image of the tumor, calyceal-pelvic system and renal vessels. Small tumors are asymptomatic in 71.4 cases, in many cases benign, in renal cell carcinoma their cells are well differentiated, they do not invade paranephral fat. Morphological verification is effective and safe in puncture biopsy of the tumor under ultrasound control. Adequate treatment depends on correct diagnosis of the tumor nature. Surgery of choice in small tumor of the kidney is resection.

Adult↗
PubMedDate not supplied

[Scope of lymphadenectomy in organ-sparing operations in kidney cancer patients].

Organ-saving operations (extended lymphadenectomy) were performed in 125 patients with renal carcinoma (RC) in the urological clinic of I. M. Sechenov Moscow Medical Academy between 1992 and 2002. In view of specific segment-by-segment lymph flow off the right and left kidneys, it is thought valid to remove paracaval and aortocaval lymph nodes in saving operations on the right kidney but in cancer of the left kidney it is recommended to remove paraaortic lymph nodes. Basing on the anatomical features, lympho-dissection should be made from the crus of the diaphragm to bifurcation of the aorta. Metastases to the regional lymph nodes were diagnosed in 12 (9.6%) patients. In 8 of 12 patients with pN+ lymph node metastases were microscopic. Frequency of lymphogenic metastases directly correlated with the size and stage of the tumor, cancer cells differentiation degree. Metastatic involvement of the regional lymph nodes in renal cancer is an unfavourable prognostic factor as 5-year survival for the overall group of patients was 71.7% while for patients with pN+ it was 41.7%.

Humans↗
PubMedDate not supplied

[Resection of the kidney for tumor].

The experience of 159 organ-preserving operations (112 renal resections and 47 enucleations) enabled the authors to formulate basic aspects of nephron-saving operations. Renal resections are valid in one kidney affected by the tumor, the other being intact. A complex of the preoperative examinations must include selective renal pharmacophlebography to reject tumor thrombus of the intrarenal vein outside the tumor site. 10 patients were resected by the modified technique - frontal removal of a part of the kidney with the tumor. Frontal resection of the kidney (ventral or dorsal) is recommended in location of the tumor in the superior or inferior segment in tumor growth forward or backward, in cases when each millimeter of renal parenchyma is important for the patient. Regional and juxtaregional lymphadenectomy must be made in any surgery for renal cancer. Long-term outcomes of organ-saving operations should be assessed not only by tumor stage and malignancy but also by the state of the contralateral kidney.

Humans↗