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Featured researches published by R. Tepper.


International Journal of Gynecological Pathology | 1996

Time-dependent effect of tamoxifen therapy on endometrial pathology in asymptomatic postmenopausal breast cancer patients.

Ilan Cohen; Marco M. Altaras; Jeremiah Shapira; R. Tepper; Doron J.D. Rosen; Mario Cordoba; Yaron Zalel; Arie Figer; Dror Yigael; Yoram Beyth

Various endometrial lesions were more frequent among asymptomatic postmenopausal breast cancer patients who were treated with tamoxifen for > 48 consecutive months (30.8%) when compared with similar patients who were treated for 6-24 months or for 25-48 months (20.8% and 12.5%, respectively). However, this difference was not statistically significant. There were also no significant differences in the frequency of the various endometrial lesions between these three groups, although endometrial polyps were more frequently found among those treated for > 48 months. Overall, 20.7% of the 164 tamoxifen-treated patients in the study had an endometrial pathology. It can be concluded that there is a slight tendency among those postmenopausal patients who have been treated for > 48 consecutive months to have a higher frequency of endometrial lesions.


European Journal of Obstetrics & Gynecology and Reproductive Biology | 1996

Diagnostic value of transvaginal color Doppler flow in ovarian torsion

R. Tepper; Yaron Zalel; Shmuel Goldberger; Ilan Cohen; Shlomo Markov; Yoram Beyth

OBJECTIVE To evaluate the role of Doppler flow in the diagnostic process of ovarian torsion. METHODS Twenty-two patients who displayed the clinical symptoms of abdominal pain concomitant with an ovarian mass and were scheduled for explorative laparoscopy were enrolled in the study. The cohort was divided into 3 groups: (A) 8 patients with clinical and sonographic evidence of torsion; (B) 8 patients with abdominal pain and sonographic diagnosis of hemorrhagic cyst; and (C) 6 patients with a simple cystic mass who had undergone explorative surgery due to abdominal pain. RESULTS After Doppler flow imaging, Group A displayed no blood flow within the mass, and surgery confirmed the diagnosis of ovarian torsion. Seven of the 8 group B patients showed ovarian vascular flow (RI = 0.472 +/- 0.067). Only 2 of the 6 Group C patients displayed vascular flow (RI = 0.680 +/- 0.129) within an untwisted cyst, confirmed by laparoscopy. CONCLUSIONS The combination of Doppler flow imaging with the morphologic assessment improves the diagnostic accuracy of ovarian torsion.


Obstetrical & Gynecological Survey | 1994

Postmenopausal Tamoxifen Treatment and Endometrial Pathology

Ilan Cohen; Marco M. Altaras; Jeremiah Shapira; R. Tepper; Yoram Beyth

Tamoxifen is widely used as adjuvant therapy for postmenopausal breast cancer patients with positive estrogen receptors. Data on a possible association of endometrial pathologies with tamoxifen treatment have been accumulating. In this review, we examine the current literature and include our own experience with this occurrence. We recommend close supervision of these patients.


Acta Obstetricia et Gynecologica Scandinavica | 1995

Ovarian volume in postmenopausal women-suggestions to an ovarian sue. nomogram for menopausal age

R. Tepper; Yaron Zalel; Shlomo Markov; Ilan Cohen; Yoram Beyth

Background. Transvaginal ultrasonography is an accurate and reliable technique for measuring ovarian size. However, there is no consensus as to the normal ovarian size in postmenopausal women. The purpose of this study was to establish normal values for ovarian volume in postmenopausal age.


Journal of Ultrasound in Medicine | 1995

Transvaginal color flow imaging in the diagnosis of ovarian tumors

R. Tepper; Liat Lerner-Geva; M. Altaras; S Goldberger; Gilad Ben-Baruch; S Markov; Ilan Cohen; Y Beyth

Transvaginal ultrasonography and color flow imaging, performed to investigate whether there is any diagnostic advantage, were assessed over a 3 year period in 217 patients with adnexal masses prior to explorative laparotomy. Gray scale sonography and color Doppler flow were performed 1 day prior to surgery. Benign tumors were found in 165 patients and flow was detectable in 82 (49.7%); 14 patients had tumors of low malignant potential, 12 (85.7%) of whom showed detectable flow, and 38 had malignant tumors, in 25 (65.8%) of whom flow was detectable. Blood flow velocity was evaluated by the calculation of the resistance index prior to surgery. Mean resistive index was 0.39 +/‐ 0.05 for malignant tumors, compared with 0.49 +/‐ 0.06 and 0.55 +/‐ 0.07 for the low malignant potential and benign tumors, respectively. These differences were statistically significant (P < 0.01). When a resistive index of 0.47 was considered the cut‐off value, the sensitivity was 88% and the specificity was calculated to be 85% (using color Doppler flow as the only diagnostic method). With our large cohort of patients, we demonstration the contribution of color Doppler flow examination in differentiating benign from malignant ovarian tumors prior to surgery.


European Journal of Obstetrics & Gynecology and Reproductive Biology | 1997

Is it necessary to perform a prophylactic oophorectomy during hysterectomy

Yaron Zalel; Samuel Lurie; Yoram Beyth; Shmuel Goldberger; R. Tepper

OBJECTIVE To evaluate the subsequent pelvic sonographic characteristics as well as the clinical outcome following hysterectomy with and without oophorectomy. STUDY DESIGN A prospective study of sonographic evaluation of 164 women, aged 29-72 years, with a history of hysterectomy was performed. Ninety-one patients underwent total abdominal hysterectomy with bilateral salpingo-oophorectomy and 73 women had either hysterectomy (abdominal or vaginal) only or hysterectomy with unilateral salpingo-oophorectomy. RESULTS The mean time interval between surgery and sonographic evaluation was 4.3 years (range, 1-25 years). Out of the 73 women with left ovaries, 37 (50.7%) were found to have pelvic lesions and four women underwent re-operations following these findings. The histologic finding were cystadenoma, hydrosalpinx with periovarian adhesions and two paraovarian cysts. In comparison, only five of the 91 women (5.5%) following bilateral salpingo-oophorectomy were found to have pelvic lesions (P < 0.0005). None of the women with prophylactic oophorectomy were operated upon following these findings. CONCLUSIONS In comparison to patients after total hysterectomy and bilateral salpingo-oophorectomy, women with prior hysterectomy and ovarian preservation are prone to subsequent pelvic lesions. They need to be closely followed with clinical, laboratory and sonographic means, and may undergo reoperations in order to rule out the possibility of neoplasia.


Obstetrical & Gynecological Survey | 1996

Differential diagnosis and management of very low second trimester maternal serum unconjugated estriol levels, with special emphasis on the diagnosis of X-linked ichthyosis.

Zalel Y; Kedar I; R. Tepper; Chen R; Drugan A; Moshe Fejgin; Yoram Beyth

Incorporation of maternal serum unconjugated estriol into the calculation of risk may increase the yield of serum screening performed during pregnancy for detection of fetal chromosomal and structural anomalies. The differential diagnosis of very low and undetectable levels of unconjugated estriol in maternal serum is discussed, with special emphasis on the prenatal diagnosis of X-linked ichthyosis. The prenatal detection of these findings dictates skilled genetic counseling, targeted sonographic evaluation and examination of fetal karyotype and fetal cDNA for Xp 22.32 with amniotic fluid levels of cortisol, STS, and ASC.


Journal of Ultrasound in Medicine | 1994

Doppler flow evaluation of pathologic endometrial conditions in postmenopausal breast cancer patients treated with tamoxifen.

R. Tepper; Ilan Cohen; M. Altaras; Jeremiah Shapira; Mario Cordoba; Yigael Dror; Yoram Beyth

A prospective pilot study was conducted to evaluate the usefulness of uterine artery blood flow in the detection of various pathologic endometrial conditions in 39 asymptomatic postmenopausal breast cancer patients who were treated with tamoxifen. No specific pattern was seen for the uterine artery pulsatility index values in the tamoxifen‐treated patients that could be related to any specific endometrial lesions, nor were any specific changes observed in the pulsatility index value with increasing severity of the pathologic endometrial conditions. Similarly, no correlation was found between ultrasonographically measured endometrial widths and uterine artery pulsatility index values. Thus, although pulsed Doppler flow ultrasonography has been shown previously to be effective in the detection of uterine cancer in non‐tamoxifen‐treated post‐menopausal patients, it probably does not contribute to the assessment of endometrial lesions in post‐menopausal breast cancer patients treated with tamoxifen.


Journal of Clinical Ultrasound | 1998

Doppler flow characteristics in patients with pelvic inflammatory disease: Responders versus nonresponders to therapy

R. Tepper; Rami Aviram; N. Cohen; Ilan Cohen; M. Holtzinger; Yoram Beyth

The objective of this retrospective study was to evaluate the role of Doppler flow studies in predicting the response to antibiotic treatment in patients with pelvic inflammatory disease (PID).


Journal of Ultrasound in Medicine | 1996

Clinical significance of endometrial fluid collections in asymptomatic postmenopausal women.

Yaron Zalel; R. Tepper; Ilan Cohen; S Goldberger; Yoram Beyth

Routine vaginal ultrasonographic evaluation of pelvic organs was performed in asymptomatic postmenopausal women to evaluate the diagnostic significance of sonographic findings of endometrial fluid collections in the presence of a thin endometrium in postmenopausal women. The study included nine women aged 61 to 79 years who had been postmenopausal for 7 to 30 years, and in whom endometrial fluid collections were incidently demonstrated. Endometrial samplings followed the ultrasonographic examinations in all nine patients, and the correlation between the histologic report and the endometrial ultrasonographic thickness was evaluated. The diameter of the endometrial fluid collections varied from 3 to 12 mm. The thickness of the endometrium surrounding the fluid ranged from 1 to 3 mm. Of the nine endometrial samples examined, five revealed atrophic endometrium, three had insufficient material for histologic evaluation, and one specimen revealed well‐differentiated adenocarcinoma. The woman in whom endometrial carcinoma was diagnosed underwent total abdominal hysterectomy with bilateral salpingo‐oophorectomy and lymph node sampling. The pathologic examination confirmed the previous histologic finding, and deep penetration into the myometrium was noticed with intact lymph nodes. Endometrial fluid collections found in asymptomatic postmenopausal patients still may be associated with endometrial malignancy, even in the presence of thin endometrium.

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Yoram Beyth

Hebrew University of Jerusalem

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Reli Hershkovitz

Ben-Gurion University of the Negev

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