Although anomalies of renal vessels and collecting system are relatively frequent, their concomitant occurrence is a rare event. During dissection of a 75-year-old male formalinembalmed cadaver, we found multiple variations in the renal vessels and renal collecting system. Both kidneys were normal in size and anteriorly malrotated, with duplex collecting system and duplex ureter. One ureter drained the upper part of the kidney and the second ureter drained the lower part of the kidney. Superior and inferior collecting systems were separated by renal parenchyma. The right kidney had two renal arteries, the first renal artery (main renal artery) originating from the abdominal aorta, passing behind the inferior vena cava and entering the kidney through the superior and inferior renal hilum. The second artery was the inferior polar artery. In addition, the right kidney had two renal veins as well. Three renal tributaries emerged from the upper and lower portion of the right renal hilum, and they joined to form the main renal vein which drained into the inferior vena cava. The lower renal vein was the inferior polar vein. The left kidney had four renal arteries (two hilar arteries and two polar arteries). The main left renal vein emerged from both superior and inferior left renal hilum, passed in front of the abdominal aorta and drained into the inferior vena cava. The left kidney also had the inferior polar vein which was divided behind the aorta (retro aortic vein) into two venous trunks. These venous trunks drained separately into posteromedial aspect of the inferior vena cava. Finally, the right testicular vein was formed by two tributaries and drained into the inferior vena cava, whereas the two left testicular veins drained separately into the left main renal vein.

Detailed extraparenhymal renal hilar dissection was performed on 110 fixed cadaveric kidneys (60 from male cadavers and 50 from female cadavers). We analyzed the number of renal arteries, angles between renal arteries and abdominal aorta, length and diameter of the renal arteries. Multiple renal arteries were present in 20.9% of cases, with a slightly higher incidence on the right side (21.8%: 20.0%). The angle between the aorta and the RRA varied from 30° to 100° with a mean of 64.1°, while the angle between the abdominal aorta and the LRA was 40° to 115°, with a mean of 67.3°. The external caliber of the RRA at the point of origin from the abdominal aorta was 5 mm to 9.1 mm, with a mean of 6.8 mm. The same caliber of the LRA was 3.7 to 9.6 mm with a mean of 7.0 mm. The average length of the renal artery from the point of origin from the abdominal aorta to the branching point was 36.2 mm for the right renal artery and 30.7 mm for the left renal artery. The average length of the renal artery from the point of origin from the abdominal aorta to the renal hilum was 65.1 mm for the right one and 54.7 mm for the left one. Knowledge of the number of renal arteries, their mode of entry into the kidney, the angles they build with the abdominal aorta, their diameter and length has practical applications in interventional radiology and surgery of the kidney and its environment.

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Abstract. Considering that sex related differences in cardiac response to flaxseed (FSO) and evening primrose oil (EPO) are insufficiently known present investigation assessed the effect of these two oils, on the cardiac function of isolated rat hearts and the possible role of sex in this. The present study was carried out on 60 adult male Wistar albino rats randomly divided into 6 groups: male rats treated with EPO, dose of 10 mg/kg/day; female rats treated with EPO, dose of 10 mg/kg/day; male rats treated with FSO, dose of 300 mg/kg/day; female rats treated with FSO, dose of 300 mg/kg/day; control group of female rats treated with regular laboratory diet for animals; control group of male rats treated with regular laboratory diet for animals. Using the Langendorff technique, markers of the heart function were evaluated: the maximum and minimum rates of pressure development in the left ventricle (LV; dP/dtmax, dP/dtmin), systolic and diastolic left ventricular pressure (SLVP, DLVP, respectively), heart rate (HR) and coronary flow (CF). Male rats treated with EPO had significantly higher (p = 0.016) mean values of dP/dtmax, dP/dtmin, SLVP and DLVP (average increase for all CPPs 20%, 25%, 30% and 110%, respectively), compared to the group of male rats treated with FSO (p = 0.914). Our study results indicate that both types of PUFA oils only slightly changed the function of the isolated rat heart in male but not in female rats. Nevertheless, the difference between oil treatments was found in male rats who had stronger cardiac response after supplementation with EPO.

Objective: The aim of this investigation was to examine normal intercondylar notch morphometry in Serbian population and to determine whether there are sex differences in anatomical parameters of the intercondylar notch among asymptomatic subjects without structural change. Method: The study included MR images of 90 patients (45 men and 45 women) receiving a 1,5-T knee scan at our radiological institute after the approval from ethics committee, which were taken in the period from 2010 to 2017. The knee was placed in neutral position, and MR images were obtained using conventional spin echo techniques. The morphology of the intercondylar notch (U- shaped and A-shaped notch) was measured for each knee. Results: The measurements of parameters for intercondylar notch geometry were obtained by analyzing coronal MR images. U-shaped intercondylar notch was found with 46 patients (51.2%) and A-shaped intercondylar notch with 44 (48.8%). There was no significant difference in the shape incidence in Serbian population (p>0.05). According to the notch width index (NWI) and the Notch shape index (NSI) criteria, we found U-shaped intercondylar notch with 24 men and 22 women and A-shaped intercondylar notch with 23 men and 21 women. There was no significant difference in incidence between the genders (p>0.05). Conclusion: We concluded that for all examined anatomical parameters of the intercondylar notch there were no significant differences in Serbian population. According to our findings in this study, we concluded that there was no sexual dimorphism for anatomical parameters of intercondylar notch in Serbian population.