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Biomedical subjects

A Ferenczy

Publications and source records attributed to A Ferenczy.

At least 73 records · Page 4Linked to original sources
PubMed1989

The biologic significance of cytologic atypia in progestogen-treated endometrial hyperplasia.

Eighty-five menopausal women (mean age 56 years) with endometrial hyperplasia without (65 patients, group 1) and with cytologic atypia (20 patients, group 2) were followed up prospectively from 2 to 12 years (mean 7 years) to shed insight into their respective response to oral medroxyprogesterone acetate therapy. In group 1 9 of 65 patients (14%) had persistence, 4 (6%) had recurrence, and none developed carcinoma. In group 2 10 of 20 patients (50%) had persistence and 5 had recurrence with cytologically atypical disease. Five of 20 patients (25%) developed adenocarcinoma at 2 to 7 years (mean 5.5 years) after starting medroxyprogesterone acetate therapy. The data suggest that most women with hyperplasia respond to progestogenic therapy and are not at increased risk of developing cancer. The patients with an unfavorable response to medroxyprogesterone acetate and a significant elevation in cancer risk can be identified on the basis of cytologic atypia.

Adenocarcinoma↗
PubMed1989

A prospective 1-year study of estrogen and progestin in postmenopausal women: effects on the endometrium.

The endometrial response to oral, cyclic conjugated equine estrogens with and without the randomized addition of medroxyprogesterone acetate was evaluated in 95 postmenopausal women with respect to morphology and bleeding patterns. At 1 year, therapy with 0.625 mg conjugated equine estrogens or 1.25 mg conjugated equine estrogens for 25 days of a 30-day cycle and 5 mg medroxyprogesterone acetate added to the last 11 days of the conjugated equine estrogens cycle was associated with hyperplasia in 0 and 10% of the patients, respectively (P = not significant). Hyperplasia developed in 30 and 57% of the patients who received the above conjugated equine estrogens and placebo regimens, respectively. Irregular, breakthrough bleeding occurred in 14% of the conjugated equine estrogens/medroxyprogesterone acetate users and in 54% of the conjugated equine estrogens/placebo users. The results of this study indicate that 1 year of therapy with 0.625 mg conjugated equine estrogens and 5 mg medroxyprogesterone acetate provided the most satisfactory endometrial protection against hyperplasia and was associated with relatively low rates of breakthrough bleeding.

Drug Therapy, Combination↗
PubMed1989

Human papillomavirus DNA in fomites on objects used for the management of patients with genital human papillomavirus infections.

We investigated the possibility that human papillomavirus (HPV) DNA could be present on objects that are used for the management of patients with genital HPV infections. Human papillomavirus DNA was identified by filter hybridization in swabs taken from eight of 16 (50%) of surgical gloves. Similarly, HPV DNA was found in 23 of 62 (37%) and one of 62 (1.6%) of biopsy forceps before and after sterilization in 30% tincture of Savlon for 30 minutes, respectively. Five of 22 (23%) and one of 22 (4.5%) of cryoprobe tips tested positive for HPV DNA before and after cleaning with 90% ethanol solution for 1 minute, respectively. The rate of HPV DNA positivity after sterilization is low. Whether HPV on fomites is infectious was not evaluated in this study. Washing and soaking them in detergents containing 2% glutaraldehyde or heating them to 100C or higher should be adequate. Use of separate gloves for manual examination of the external and internal anogenital tract is advisable.

Biopsy↗
PubMed1989

Immunohistochemical studies with monoclonal antibodies B72.3 and MA5 on histologic and cytologic specimens from benign and malignant breast lesions.

Monoclonal antibodies B72.3 and MA5 were tested by the avidin-biotin immunoperoxidase method in histologic sections of 38 benign, 22 precancerous and 22 cancerous breast lesions, as well as in fine needle aspiration (FNA) smears and cell blocks of 25 breast carcinomas. Neither B72.3 nor MA5 was specific for breast cancer cells: both also reacted with cells from benign and precancerous conditions. B72.3 as a "detector" of malignant cells or their precursors was superior to MA5, however: it was not reactive to cells in most benign breast lesions (mammary duct ectasia, fibroadenoma and ductal hyperplasia, with and without atypia). Cancerous cells had heterogeneous immunostaining with B72.3, which may lead to false-negative results in relatively hypocellular FNA samples. FNA samples prepared as both smears and cell blocks provided the most abundant cellular samples and the lowest false-negative immunostaining reaction of cancerous cells with B72.3.

Antibodies, Monoclonal↗
PubMed1989

Vulvar intraepithelial neoplasia and skin appendage involvement.

Vulvar intraepithelial neoplasia may extend into the pilosebaceous units of the hairy and non-hairy skin of the vulva, and inadequate removal may cause treatment failure. We measured with a calibrated microscope the thickness of vulvar intraepithelial neoplasia and the depth to which it extended into the underlying pilosebaceous units of the vulvar skin. The mean thickness of vulvar intraepithelial neoplasia in 329 histologic sections from 62 cases was 0.38 mm; 99.5% of all vulvar intraepithelial neoplasia measured less than 0.77 and 0.69 mm in the hairy and non-hairy skin, respectively. Sebaceous-gland and hair-follicle involvement by vulvar intraepithelial neoplasia was 21 and 32%, respectively. The mean depth of sebaceous-gland involvement was 0.77 mm in the hairy skin and 0.50 mm in its non-hairy counterpart; 99.5% of all vulvar intraepithelial neoplasias extended less than 2.03 and 1.07 mm in the hairy and non-hairy skin, respectively. The mean depth of hair-follicle involvement was 1.04 mm; 99.5% of all hair follicles were involved less than 2.55 mm. Our findings suggest that removal of vulvar intraepithelial neoplasia to a depth of 1.0 and 2.0 mm in the non-hairy and hairy skin, respectively, is appropriate for successful treatment.

Adult↗
PubMed1988

Immunocytochemical study of progesterone receptors in hyperplastic and neoplastic endometrial tissues.

Endometrial carcinoma is the most common genital malignancy in North America. However its pathogenesis, in particular its relationship with hyperplasia is not clear. To understand steroid hormonal interactions in the genesis and growth of human endometrial hyperplasia and carcinoma, we have assayed progesterone receptors in hyperplasia and neoplastic human endometrium by immunocytochemistry. The presence of progesterone receptors in target tissues is known to be a marker of both estrogen and progesterone action. The receptors were identified in fresh-frozen sections using a mouse monoclonal antiprogesterone receptor antibody (alpha PR6). The progesterone receptor content was high in the epithelium of hyperplasia without cytological atypia and low in the epithelium of endometrial intraepithelial neoplasia (hyperplasia with cytological atypia). In carcinomas there was a heterogenous distribution of progesterone receptors in the epithelium but low as compared to hyperplastic endometria without cytological atypia. The stroma contained relatively high progesterone receptor levels irrespective of whether the epithelium was hyperplastic or neoplastic.

Adult↗
PubMed1988

Tubal occlusion as a result of retained ectopic pregnancy: a case report.

During a laparoscopic examination for infertility, a retained ectopic pregnancy was unexpectedly found occluding the fallopian tube. This case report raises concerns that observant management and medical treatment of ectopic pregnancy may lead to intratubal retention of and occlusion by chorionic tissue.

Adult↗
PubMed1988

Search for human papillomaviruses in normal, hyperplastic, and neoplastic endometria.

Twenty-eight endometria, including seven normal, five hyperplastic, and 16 neoplastic tissues, were analyzed with the Southern blot hybridization technique for their possible association with human papillomaviruses (HPVs). Human papillomavirus probes with types 6/11, 16, 18, and 31 failed to identify HPV DNA in any of these tissues. The findings suggest that the endometrium is not a usual target for HPV infection, and that HPV is not likely to be a carcinogenic factor in the development of endometrial carcinoma.

Adenocarcinoma↗
PubMed1988

Immunocytochemical study of progesterone receptors in the human endometrium during the menstrual cycle.

Specific mouse monoclonal antibody (alpha PR6) against progesterone receptor was used with an avidin biotin complex technique to localize progesterone receptors in frozen sections of 26 normal cyclic human endometria. Progesterone receptor was detected in the nuclei of epithelial and stromal cells in both the functionalis and basalis layers. In the functionalis, the receptor content increased from the early to the late proliferative phase in both cell components. It remained high in the early secretory phase and decreased in the mid- and late secretory phases, comparatively more rapidly in the epithelium than in the stroma. In the latter, the predecidual cell nuclei were receptor-positive. The menstrual phase endometrium lacked receptors. The basalis was rich in progesterone receptors during the proliferative, early and midsecretory phases in both components and receptor-free during the late secretory and menstrual phases of the cycle. Myometrial smooth muscle cell nuclei contained progesterone receptors, whereas they were absent in endometrial and myometrial vessels. Overall, the epithelial progesterone receptor content seemed to correlate with the endometrial tissue levels of estradiol, possibly reflecting its estrogen sensitivity, whereas the stromal progesterone receptor content during the secretory phase at least, in part, may be constitutively synthetized.

Adult↗
PubMed1988

Distribution of estrogen receptors in various cell types of normal, hyperplastic, and neoplastic human endometrial tissues.

To facilitate our understanding of estrogen participating in the genesis of human endometrial hyperplasia and carcinoma and the influence of the surrounding mesenchyme in their development, we assayed estrogen receptors in the epithelium and stroma of various human endometrial tissues by immunocytochemistry. The receptors were localized in fresh frozen sections using the ER-ICA kits (Abbott Laboratories, North Chicago, Illinois). The receptor content was highest in the proliferative endometrium and decreased gradually throughout the postovulatory phase of the menstrual cycle in both the epithelium and the stroma and this occurred more rapidly in the stroma. Estrogen receptor content was high in both the epithelium and the stroma of hyperplasia and was thus similar to that of the proliferative endometrium, the receptor content was low in the epithelium of endometrial intraepithelial neoplasia (hyperplasia with cytologic atypia) closely resembling that of carcinoma. In carcinomas there was a heterogenous distribution of estrogen receptors both in the epithelium and the stroma, but in general, the receptor content was low as compared with normal proliferative or hyperplastic endometrium; however, in selected cases the content of estrogen receptor in the stroma was high, despite the lack of receptors in the epithelium.

Adult↗
PubMed1988

Digital imaging analysis of normal, hyperplastic and malignant endometrial cells in endometrial brushing samples.

Sixty cytologic specimens obtained by endometrial brushing (using the Gynecyte device) were quantitated by digital imaging techniques. These samples included 25 from normal endometria, 6 from persistent proliferative endometria, 14 from cystic or adenomatous hyperplasias and 15 from carcinomas. The morphometric parameters surveyed included mean cell area, nuclear area, perimeter and long and short axes. The amount of hematoxylin dye in the nuclei was expressed by mean transmittance (mean of gray levels) and chromatin index (standard deviation of gray levels). The frequency distributions of cells derived from normal tissue and persistent proliferative endometrium were quite similar. The quantitative parameters of cystic and adenomatous hyperplasia, although intermediate between those of normal endometrium and carcinoma, were closer to the former than to the latter. Using stepwise discriminant analysis of the morphometric parameters, 83% of the specimens were correctly classified into the categories of normal/persistent proliferative, hyperplasia and carcinoma. The accuracy was improved to 88% when densitometric parameters were added. This study demonstrates the potential application of digital imaging techniques to the distinction and classification of normal, hyperplastic and malignant endometrial cells.

Adenocarcinoma↗
PubMed1987

Human papillomavirus type 16 in intraepithelial neoplasia (bowenoid papulosis) and coexistent invasive carcinoma of the vulva.

Tissues from two cases of bowenoid papulosis of the vulva with coexistent invasive squamous cell carcinoma were evaluated for the presence of human papillomaviruses (HPVs) and for nuclear DNA content. In both cases, HPV type 16 and nuclear aneuploidy were found in bowenoid papulosis as well as in invasive carcinoma. Patterns of hybridization suggested that the viral genome was integrated into the cellular genome in both bowenoid papulosis tissues as well as in invasive carcinoma tissues. These observations suggest that lesions designated as bowenoid papulosis may have invasive cancer potential. The term vulvar intraepithelial neoplasia seems to be more appropriate for HPV-16-containing aneuploid, intraepithelial lesions of the vulva.

Adult↗