Awareness and preoperative assessment of the venous system before abdominal aortic surgery, isolated collection of renal venous blood samples, and urological or kidney transplantation procedures is essential.

No abstract

No abstract

Uterine fatty lesions (UFLs) continue to arouse great interest because of their rare occurrence and unknown histogenesis. The aim of the study was to determine the occurrence of UFLs and the dynamics of their development, as well as to evaluate the histopathology and relationship with regressive stromal changes. 3750 uterine specimens were reviewed during the period between 1984 and 2003. In the examined series of 3750 uteruses removed due to tumors or prolapse, 50 cases with four types of changes were chosen: adipocytic metaplasia of primary uterine leiomyomas (70% of cases), adipocytic metaplasia of interlobular stroma of primary uterine tumors (16%), adipocytic aggregates in the uterine muscle (8%), and pure lipomas (6%). Additionally, the cases were divided into three groups depending on the extent of fatty changes. Group 1 (48% of cases) consisted of cases in which less than 25% of the changes were present in the examined material. In group 2 (28% of cases) the fatty changes were between 25 and 50%. In group 3 (16% of cases) fatty changes constituted more than 50% of the examined specimen. The extent of adipocytic changes was connected with patient age, being significant between groups 1 and 3 (p < 0.01). Regressive stromal changes in leiomyomas occurred more often in middle-aged patients, with stage 2 lipomatosis than in other subgroups. Among 46 cases of UFLs two patients were diagnosed with a coexisting malignant uterine neoplasm (4.35%). In four patients with muscular lipomatosis, two were diagnosed with a coexisting malignant uterine tumor too (50%). Conclusions: 1. Uterine fatty lesions are rarely diagnosed, although they occur more often than previously thought. 2. Mixed tumors predominate over pure lipomas. 3. The histogenesis of these lesions seems to be multi-factorial, considering the different types of UFLs. 4. The extent of uterine fatty metaplasia positively correlated with the age of operated women. 5. The coexistence of UFLs with other malignant uterine neoplasms is accidental.

No abstract

Renal artery anomalies of the kidney vascular pedicle are significantly correlated with the coexistence of venous system variations. This is especially true in case of male patients, which favors female kidneys for transplantation.

Background: Kidneys with one renal artery are mostly desired in transplantation. The study investigated the correlation between sex, blood groups, and the anatomy of the renal vascular pedicle. The study group Material and Methods: comprised 322 corpses (176 male and 146 female), where we determined the number of renal arteries and venous renal vascularization anomalies. The obtained results were correlated with sex and blood groups of the investigated individual. A single renal artery occurred significantly more often in female (105/146; 72%) than in Results: man (95/176; 54%) (p=0.0001). The above-mentioned was significantly correlated with the blood groups (p=0.0476). This correlation was not observed in case of the venous system (p=0.304). A single renal artery was mostly observed in blood group O (140/251; 55.8%), most rarely in blood group A (142/321; 44.2%), and intermediate values were observed in blood groups AB (52.5%) and B (48.1%). The Rh(+) factor has a positive (51.2%), while the Rh(-) a negative (39%) influence on the occurrence of bilateral, single renal arteries (p=0.014). The female sex in a normal renal artery system dominates over the male sex in blood group O (38/48; 79.2% and 32/56; 57%, respectively) (p=0.001), and blood group B (24/35; 68.6% and 14/28; 50 %, respectively) (p=0.004), and insignificantly more often in case of blood group AB (10/13; 77% and 11/19; 58%, respectively) (p=0.14), as well as at the border of significance in case of A blood group (33/52; 63.5% and 38/71; 53.5%, respectively) ( p=0.082). Right-sided venous supernumerary was observed significantly more often in blood group A (18/76; 23.7%), and most rarely in blood group O (7/64; 10.9%) (p=0.049). Fem Conclusions: ale sex significantly positively correlated with single renal artery on both sides. In blood group O there were significantly more cases with bilateral single renal arteries, while in group A the lowest.

The genesis of lipoleiomyoma has not been explained yet. Immunohistochemical examinations were performed on 17 lipoleiomyomas in women aged 43-82 (mean age: 51 ±9 years). Four types of myomas were distinguished: 1) pure leiomyoma, 2) fibroleiomyoma, 3) hyalinizing leiomyoma, 4) strongly hyalinized myoma, along with three degrees of progression of adipocytic metaplasia: 1) up to 25% of lipocytes, 2) up to 50% of lipocytes, and 3) over 50% of lipocytes in the analyzed sample, along with three degrees of progression of adipocytic metaplasia: 1) up to 25% of lipocytes, 2) up to 50% of lipocytes, and 3) over 50% of lipocytes in the analyzed sample. A positive correlation was found between the age of women and rate of development of metaplasia (r = 0.51, p = 0.035) as well as with activity of the estrogen receptor in the primary tumor (r = 0.53, p = 0.03). New mucous perivascular tissue was reported among 11.8% of patients and on this basis lipocytes were formed. The appearance of subendothelial granular cells of large blood vessels with a positive reaction for smooth muscle actin (SMA) and CD68 was reported in 17.7%. Results of immunohistochemical research seem to confirm that lipocytes de novo come from the primal pluripotent cells of the tumor stroma and not from the fatty degeneration of myocytes.