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K Anafarta

Publications and source records attributed to K Anafarta.

24 records · Page 2Linked to original sources
PubMed1993

Characterisation of renal masses with colour flow Doppler ultrasonography.

Colour flow Doppler ultrasonography (US) was used in 24 renal masses (12 benign, 12 malignant) to investigate the vascularity of the lesion and thus to characterise the mass. A colour flow Doppler US device (Toshiba 270 A) with a convex probe of 3.75 MHz was used. Colour flow and the peak-systolic Doppler shift frequency obtained from the renal mass were used to distinguish between benign and malignant lesions. Ten of 12 malignant lesions demonstrated colour flow together with Doppler signals greater than 2.5 kHz (mean 3.5 kHz). None of the 12 benign renal masses demonstrated colour flow or tumour signals. The majority of malignant lesions give rise to neovascularisation and so high frequency Doppler-shifted signals. Thus colour flow Doppler sonography is the most reliable means of differentiating benign from malignant renal masses.

Adult↗
PubMed1993

Use of color Doppler sonography in the evaluation of varicoceles.

Color flow Doppler sonography (CFDS) has been used to evaluate the blood flow to the testes, because of its ability to visualize small vessels with low flow. A total of 39 infertile men, 18 with clinical varicocele and 21 without, were examined using CFDS to assess the clinical usefulness of this technique. In patients with varicocele, venous diameter in the pampiniform plexus was greater than 2 mm, whereas those without varicocele showed diameters of less than 1.8 mm. Of 21 patients without varicocele on physical examination, 13 were found to have reflux by CFDS. According to clinical and CFDS findings, patients were divided into five groups: varicocele negative, suspicious subclinical varicocele, subclinical varicocele, manifest varicocele with Valsalva-induced reflux, and manifest varicocele. These data suggest that the CFDS technique is a simple, sensitive and noninvasive modality for the accurate diagnosis of varicocele.

Adult↗
PubMed1992

Histopathological alterations of deep dorsal penile vein in venogenic impotence.

The mechanism and hemodynamics of penile veins in erection have long been a matter of controversy and hypotheses. With the intention to develop a new concept of venous ultrastructure in penile venous insufficiency, we studied the histopathology of 13 dorsal penile veins obtained from important patients during venous ligation because of proven venous leakage. Besides, 1 normal deep dorsal vein taken from a volunteer who underwent another type of penile operation was also examined. All sections were stained with hematoxylineosin, Gomori trichrome, periodic acid-Schiff, Gomori reticulum and Verhoeff elastic stains. All 13 veins showed some significant histological changes namely nodular hypertrophy in 7, nodular atrophy in 2, diffuse atrophy in 2, diffuse hypertrophy in 1 and minimal changes in 1. In general, the dominating histological appearance was hypertrophy of the muscular pattern and enhancement of collagenization. None of these alterations was prevalent in the normal control. The cause and the result relationship between venous leakage and the mentioned histological changes still remains a matter of debate.

Adult↗
PubMed1992

Treatment of impotence due to venous leakage by resection of the deep dorsal vein of the penis.

Ligation and resection of the deep dorsal vein of the penis is a surgical approach to restore potency in venogenic impotence. Between December 1989 and December 1990, we treated 25 men with venogenic impotence by this technique. Additionally, the Nesbit operation was performed in 3 cases due to penile curvature and in 1 case a penile plaque was excised. The patients were asked to come for control 1, 3, 6 and 12 months after surgery. In 14 patients the rigidity and duration of erections were improved 3 months after surgery but, in 21 of the 25 men, erectile dysfunction recurred 6-15 months (average 9.4 months) following surgery and penile prostheses were implanted in 7 cases. The complications were orchiepididymitis in 1 case, penile edema and hyperemia which lasted for 1 week in 1 patient and numbness near the incision site in 10 cases. We conclude that, in patients who had erectile impotence due to venous leakage, resection of the deep dorsal vein of the penis could provide a transient satisfactory result, but should not be considered as a long-term treatment modality.

Adult↗
PubMedDate not supplied

Comparison of international index of erectile function with nocturnal penile tumescence and rigidity testing in evaluation of erectile dysfunction.

We tried to compare the parameters of nocturnal penile tumescence and rigidity (NPTR) testing with erectile function (EF) domain score of International Index of Erectile Function (IIEF), which is used in diagnosis and determining the severity of erectile dysfunction (ED), and to assess the sufficiency of IIEF in the diagnosis of ED. A total of 90 men, mean age 46 years (24-75), presenting with ED to our clinic between January 2001 and March 2003 were included in the trial. All the men answered the standard IIEF (15 questions) forms and was divided into four groups as mild ED, moderate ED, severe ED and no ED according to the EF domain score that is obtained from 1st, 2nd, 3rd, 4th, 5th and 15th questions. Then NPTR testing with the RigiScan Plus monitoring device was performed for two consecutive nights on those men. The distribution of the six parameters of NPTR testing (number of erections, duration of erections, TAU base, RAU base, TAU tip, RAU tip) among the four groups and the correlation with IIEF-EF domain score were evaluated. Additionally, the distribution of the risk factors (diabetes mellitus, hypertension, atherosclerotic heart disease, dyslipidemia and smoking) was analyzed both among the four groups and in each group. According to IIEF-EF domain scores of 90 patients, 16 (18%) had severe ED, 21 (23%) moderate ED, 41 (46%) mild ED and 12 (13%) no ED. There was no statistically significant difference between the risk factors among the men in these groups (P > 0.05). When the IIEF-EF domain scores were compared with parameters of NPTR testing, no statistically significant difference was obtained among ED groups (mild, moderate, severe) (P > 0.05). However, we observed a statistically significant difference between three ED groups and no ED group (P < 0.05). If NPTR testing is considered as a gold standard test, sensitivity, specificity, positive predictive value and negative predictive value of IIEF-EF domain score in ED diagnosis are 100, 17.9, 29.4 and 100% respectively. In conclusion, we did not observe a clinical correlation between IIEF-EF domain scores and NPTR parameters in the whole population; however, we observed that if IIEF-EF domain scores were normal, NPTR parameters were also normal. In other words, we can say that if the initial IIEF-EF domain scores are normal, then we do not have to perform NPTR testing. This could be helpful to make a cost-effective diagnosis.

Adult↗