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Dive into the research topics where Roger B. Yandell is active.

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Featured researches published by Roger B. Yandell.


American Journal of Obstetrics and Gynecology | 1995

Interleukin-10 messenger ribonucleic acid in human placenta: implications of a role for interleukin-10 in fetal allograft protection.

Patrick Cadet; Peter L. Rady; Stephen K. Tyring; Roger B. Yandell; Thomas K. Hughes

OBJECTIVE Our purpose was to determine whether interleukin-10 is expressed in human placental tissue, which might imply a role for it in fetal allograft protection. STUDY DESIGN Detection of interleukin-10 messenger ribonucleic acid in human placental tissue and in human placental JAR cells by reverse transcription-coupled polymerase chain reaction was studied. RESULTS Interleukin-10 messenger ribonucleic acid was detected in human placental tissue from term mothers and in human placental JAR cells. Sequence analysis of the expected interleukin-10 complementary deoxyribonucleic acid fragment revealed 100% homology to authentic interleukin-10 complementary deoxyribonucleic acid. CONCLUSION Our results indicated that human placental tissue from term mothers expressed high levels of interleukin-10 messenger ribonucleic acid, suggesting that cells that produce interleukin-10 and that are associated with the placenta may play a role in preventing rejection of the fetal allograft by the mother.


American Journal of Obstetrics and Gynecology | 1986

Necessity of endocervical curettage in colposcopy

Karan R. Moseley; Tung V. Dinh; Edward V. Hannigan; E.A. Dillard; Roger B. Yandell

The use of endocervical curettage was evaluated in 200 patients undergoing colposcopy, biopsy, endocervical curettage, and conization. It is suggested that endocervical curettage be performed only in cases of satisfactory colposcopy, since patients with unsatisfactory colposcopy should undergo conization.


Journal of Lower Genital Tract Disease | 1998

Management of cervical intraepithelial neoplasia during pregnancy: a simplified and cost-effective approach.

Christopher H. Roberts; Tung V. Dinh; Edward V. Hannigan; Roger B. Yandell; Vicki J. Schnadig

Objectives To determine the cost-effectiveness of managing an abnormal Papanicolaou (PAP) smear during pregnancy with a single colposcopic exam and biopsies, followed by Pap smears in each subsequent trimester of pregnancy and 8 weeks postpartum. Materials and Methods We reviewed 84 pregnant women with cervical intraepithelial neoplasia (CIN) between 1983 and 1991, testing the accuracy of an initial biopsy and subsequent Pap smears, to follow the progression (or regression) of disease as determined by postpartum biopsy or Pap smears. Results In 26 women with CIN1, 2 (8%) progressed to CIN3. In 29 women with CIN2, 5 (17%) progressed to CIN3. Of 29 patients with CIN3, 20 (69%) remained at CIN3 and 2 (6%) progressed to microinvasive carcinoma postpartum, confirmed by conization. No invasive carcinoma was missed. The cost of colposcopy with biopsies and Pap smear is


Journal of Reproductive Medicine | 1996

Avoiding conization for inadequate colposcopy : Suggestions for conservative therapy

Roger B. Yandell; Edward V. Hannigan; Tung V. Dinh; Virginia S. Buchanan

304, whereas cost of a Pap smear only is


Obstetrics & Gynecology | 1993

Management of patients with positive margins after cervical conization.

Lapaquette Tk; Tung V. Dinh; Edward V. Hannigan; Doherty Mg; Roger B. Yandell; Buchanan Vs

30. Conclusions Single colposcopy with biopsies at the beginning of pregnancy and Pap smears during subsequent trimesters and postpartum should be adequate follow-up to prevent progression to invasive cancer and represents a significant cost savings.


Obstetrics & Gynecology | 1989

Mixed müllerian tumors of the uterus: a clinicopathologic study.

Tung V. Dinh; Richard E. Slavin; Belur S. Bhagavan; Edward V. Hannigan; Esperanza M. Tiamson; Roger B. Yandell

OBJECTIVE To determine if conservative treatment can safely be offered to patients with cervical intraepithelial neoplasia (CIN) and inadequate colposcopic examination. STUDY DESIGN We reviewed the charts of 733 evaluable cone biopsies of the cervix performed for CIN at the University of Texas Medical Branch at Galveston from January 1981 to September 1990. RESULTS Of 371 conizations that indicated inadequate colposcopy, there were 62 cases that fulfilled all the following conditions: cytologic smear suggesting CIN 2 or less, negative endocervical curettage (ECC) and cervical colposcopic biopsy showing CIN 2 or less. Pathologic examination of the cone biopsy specimen in these 62 cases revealed no dysplasia in 29.0%, CIN 1 in 16.%, CIN 2 in 37.0%, 3 in 17.7%, and no microinvasive or invasive lesions. Pathologic examination of the cone specimens of 309 patients with any high-risk factor--smear suggesting CIN 3 or invasive disease, colposcopic biopsy showing CIN 3 or positive ECC--revealed no dysplasia in 11.9%, CIN 1 in 11.3%, CIN 2 in 16.8%, CIN 3 in 49.8%, microinvasive carcinoma in 5.5% and frankly invasive carcinoma in 4.5%. CONCLUSION Conservative therapy may be offered to patients with inadequate colposcopy, CIN 1-2 on both biopsy and cytology, and negative ECC without over-looking either invasive or microinvasive carcinoma. With these criteria, 16.7% of patients with an inadequate colposcopy in our study could have avoided cone biopsy.


Journal of Reproductive Medicine | 1986

Carcinoma in situ of the vulva. A clinicopathologic study of 50 cases.

Powell Lc; Tung V. Dinh; Rajaraman S; Edward V. Hannigan; Dillard Ea; Roger B. Yandell; To T


Obstetrics & Gynecology | 1988

Mixed mesodermal tumors of the ovary: A clinicopathologic study of 14 cases

Tung V. Dinh; Richard E. Slavin; Belur S. Bhagavan; Edward V. Hannigan; Esperanza M. Tiamson; Roger B. Yandell


Journal of Reproductive Medicine | 1996

Outpatient loop electrosurgical excision procedure for cervical intraepithelial neoplasia. Can it replace cold knife conization

Ana M. Eduardo; Tung V. Dinh; Edward V. Hannigan; Roger B. Yandell; Vicki J. Schnadig


Lasers in Surgery and Medicine | 2001

Diode laser assisted transcervical tubal sterilization : An in vivo study in rabbits

Stefan Spörri; Brent Bell; Roger B. Yandell; Massoud Motamedi

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Edward V. Hannigan

University of Texas Medical Branch

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Tung V. Dinh

University of Texas Medical Branch

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Vicki J. Schnadig

University of Texas Medical Branch

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Esperanza M. Tiamson

University of Texas Medical Branch

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Ana M. Eduardo

University of Texas Medical Branch

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Brent Bell

University of Texas Medical Branch

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E.A. Dillard

University of Texas Medical Branch

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Karan R. Moseley

University of Texas Medical Branch

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