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M Barbero

Publications and source records attributed to M Barbero.

At least 37 records · Page 2Linked to original sources
PubMed1994

[Current knowledge about the natural history of intraepithelial neoplasms of the vagina].

The data on the natural history of vaginal intraepithelial neoplasia (VaIN) available in the literature are scarce and incomplete. As a matter of fact the majority of the Authors report series with a small number of cases, which are predominantly represented by VaIN III and usually already treated. Nevertheless from the review of the literature it seems that VaIN, particularly those of low grade (I-II), tend to show a high rate of spontaneous regression. The lesions are frequently multifocal, associated with papilloma virus (HPV) infection and arising in young women. On the contrary, the VaIN showing a more aggressive behaviour are usually represented by single lesions, arising in older women. Those patients are also frequently immunosuppressed, with a history of preceding genital neoplasia and a previous exposure to radiation and/or chemotherapy.

Adult↗
PubMed1994

Vulvar intraepithelial neoplasia of low grade: a challenging diagnosis.

The authors reviewed 21 cases of "mild vulvar atypia" diagnosed from 1981 to 1990. The first 16 cases were diagnosed as hyperplastic dystrophy with mild atypia according to the 1976 ISSVD Classification of Vulvar Disease, while the last five cases were diagnosed as vulvar intraepithelial neoplasia grade I (VIN I). The review of the specimens was made by the same pathologist who gave the initial diagnosis and by a dermatopathologist unaware of the initial diagnosis. Both reviewers used the 1986 and 1989 ISSVD terminologies. The presence of "mild atypia" was confirmed in only four of the 21 specimens, that is in 19% of the cases, and two of them were found in the context of patients suffering from a lichen planus. These findings show that the diagnosis of mild atypia in vulvar tissues is a challenge and that mild vulvar atypia cannot be automatically considered a VIN I.

Adult↗
PubMed1993

Biologic behavior of vulvar intraepithelial neoplasia. Histologic and clinical parameters.

The aim of this study was to evaluate the role by which different factors, such as human papillomavirus (HPV) infection, age, dystrophic alterations, focal nature and size of the lesion, influence the biologic behavior of vulvar intraepithelial neoplasia (VIN). Sixty-nine cases of VIN were investigated (28 VIN 1, 9 VIN 2, 32 VIN 3). Follow-up was possible in 58 cases, with a mean of 31 months; no treatment was given to 3 patients, while 55 were treated either medically or surgically. Eighty-four percent of the patients were cured, recurrences were found in 11%, and 5% of the patients showed progression of the disease to carcinoma. The ratio between medical and surgical treatment was the same among the cured, recurred and progressed groups of patients. No differences with regard to focal nature of the lesion, presence of HPV infection or dystrophic alterations were observed between the three groups of patients. Only the mean age was higher in patients who showed progression of the lesion to carcinoma.

Adult↗
PubMed1993

Histologic parameters of vulvar invasive carcinoma and lymph node metastases.

We evaluated seven histologic parameters (tumor diameter, histologic grading, depth of stromal invasion, vascular invasion, pattern of invasion, lymphoplasmocytic infiltration and amount of necrosis) of 50 cases of vulvar invasive carcinoma to assess their correlation with groin lymph node metastases. Of 50 patients, 25 had groin lymph node metastases. No lymph node metastasis was found in four cases with depth of invasion < or = 2.0 mm. Among the 31 patients with vascular invasion, 23 (74%) had positive nodes, whereas lymph nodes were metastatic only in two of the 19 patients (10%) without vascular invasion. At univariate analysis, performed with Fisher's exact method, all the parameters considered, except pattern of invasion and amount of necrosis, were significantly associated (P < .05) with lymph node metastases. However, after adjustment by multiple logistic regression for the variables statistically significant at univariate level, only the presence of vascular invasion was significantly associated with nodal involvement and tumor diameter was borderline, whereas the effect of the other variables was almost completely explained by confounding.

Aged↗
PubMed1992

[Intra-lesion administration of beta-interferon in the treatment of CIN associated with HPV infection].

Thirty-two women with histologically confirmed cervical intraepithelial neoplasia (CIN) associated with human papillomavirus (HPV) infection were treated with intralesional beta-interferon. At 12 months from the end of the treatment, 60% of the patients showed complete regression, histologically assessed, of CIN. Considering separately the different CIN grades, the regression for CIN I was 71%, 64% for CIN II and 45% for CIN III. Side-effects were rather frequent (84%) but they did not require discontinuation of the treatment. On the basis of these data the Authors believe that intralesional beta-interferon, in selected cases, can play a role, as a conservative modality, among the different techniques of CIN therapy.

Adult↗
PubMed1990

Vulvar intraepithelial neoplasia. A clinicopathologic study of 60 cases.

Sixty cases of vulvar intraepithelial neoplasia (VIN) were analyzed clinicopathologically (24 VIN I, 9 VIN II, 27 VIN III). The ages of the patients ranged from 21 to 83 years (mean, 53.7). Colposcopic examinations showed the presence of white areas in 29 cases, red areas in 9, acetowhite areas in 6 and other alterations in 13. One-third of the lesions were multifocal. Pruritus and burning were present in 65% of the cases. Fifty-one percent of the cases showed histologic changes suggestive of human papillomavirus (HPV) infection; the mean age of those patients was significantly lower than that of patients without HPV infection. In 15 cases of VIN, HPV DNA testing was performed with Southern blot hybridization; in three (20%) of those specimens HPV 16 episomal DNA was identified. Epithelial alterations surrounding the areas of VIN were found in 24 cases (40%)-23 squamous cellular hyperplasias and 1 lichen sclerosus. Different types of treatment were performed according to the different grades of VIN: medical therapy, diathermocoagulation, local excision, hemivulvectomy and total vulvectomy. Follow-up was possible in 52 cases, with a mean of 33 months (range, 3-98). Two cases of VIN I showed progression of disease over 12-24 months.

Adult↗
PubMed1990

Topographic distribution of groin lymph nodes. A study of 50 female cadavers.

There is a discrepancy between anatomy textbooks' description of groin node position and Way's technique of lymphadenectomy. On the one hand, anatomic studies have demonstrated that the deep femoral nodes are on the medial side of the femoral vein, lying on the deep portion of the fascia lata, and can be seen easily through the opening of the fossa ovalis. On the other hand, the standard technique of deep femoral lymphadenectomy consists of removing the fat lying lateral to the femoral artery through the incision and detachment of the fascia lata from the sartorius to adductor longus muscle. With the aim of demonstrating that a correct deep femoral lymphadenectomy does not require removal of the fascia lata, we dissected Scarpa's triangles in 50 female cadavers. The examination of 100 specimens demonstrated that the deep femoral nodes are always situated within the opening of the fossa ovalis, and no lymph nodes are distal to the lower margin of the fossa ovalis, under the fascia cribrosa. These findings suggest that deep femoral lymphadenectomy can be performed without removing the fascia lata.

Adult↗
PubMed1990

Deep femoral lymphadenectomy with preservation of the fascia lata. Preliminary report on 42 invasive vulvar carcinomas.

Forty-two patients with primary invasive vulvar carcinoma were treated with radical vulvectomy and deep femoral lymphadenectomy with preservation of the fascia lata and cribriform fascia. The rationale for using this technique was based on anatomic knowledge of the topographic distribution of groin lymph nodes, which was confirmed by the study of 50 cadavers. The preliminary data show that the number of superficial and deep femoral lymph nodes removed from the 42 patients (mean number of nodes, 20; range, 8-32) was similar to the number reported in anatomy books. In addition, the five-year actuarial survival rate, 70%, was comparable to that in the literature. These preliminary results suggest that the surgical technique used in this study is as radical an oncologic procedure as Way's classic groin lymphadenectomy, which consists of removing the fascia lata and cribriform fascia.

Aged↗
PubMed1988

Epithelial alterations adjacent to 111 vulvar carcinomas.

Material from 111 invasive primary vulvar carcinomas was reviewed in order to study the histopathologic changes adjacent to the neoplasia. The histopathologic characteristics of the adjacent tissue were divided into categories. Dystrophic lesions were adjacent to invasive cancer in 57.6% of the cases, carcinoma in situ (CIS) in 21.6% and epithelial changes suggestive of human papillomavirus infection in 18.9%. A spectrum of epithelial changes, ranging from hyperplastic dystrophy without atypia to CIS, was found adjacent to nine cases of invasive carcinoma (8.1%). In 40.5% of the vulvar carcinomas there were no specific alterations surrounding the neoplasia. These data show that dystrophies and CIS were adjacent to invasive carcinomas in nearly 60% and 20% of cases, respectively.

Carcinoma in Situ↗
PubMed1988

Antigens of the HLA system in women with vulvar lichen sclerosus. Association with HLA-B21.

The cause of vulvar lichen sclerosus (VLS) is unknown. An autoimmune origin has been suggested. The HLA system is responsible for the synthesis of major histocompatibility antigens and is considered a genetic marker of the risk of or resistance to some diseases. Recently, the association between some antigens of the HLA system and diseases of proven autoimmune origin has been reported. A possible association between antigens of the HLA system and VLS has been investigated by others, with contradictory results. Here we report the results of HLA typing in 68 women with histologically proven VLS. The following antigens were tested: A1, A2, A3, A9-11, A28, A29, A32, B5, B7, B8, B12-B18, B21, B22, B27, B35, B40, Cw1-4, Dr1-5 and Dr7. The results were compared with the frequency of HLA antigens in about 2,000 controls. Patients affected by VLS showed an increased frequency of HLA-B21 (22.06% vs. 9.56%, P less than .001), HLA-Dr5 (55.38% vs. 40.92%, P less than .025) and HLA-Dr7 (38.46% vs. 25.19%, P less than .025). After correction for the number of antigens tested (44) the difference in HLA-B21 frequency was significant at the P less than .05 level. This finding gives further support to the suggestion that an immune system disorder is involved in the origin of VLS.

Autoimmune Diseases↗
PubMed1988

Cellular atypia in vulvar dystrophies.

We studied the frequency and distribution of cellular atypia in 448 cases of vulvar dystrophy. The total frequency was 9.4%. Atypia was found almost exclusively in hyperplastic areas. Epithelial changes suggestive of human papillomavirus infection were found in 14.2% of the atypical dystrophies. During the follow-up of 78 patients with typical dystrophy, mild atypia developed in three cases, but with the continuation of medical treatment it disappeared in two cases. Eleven cases of atypical dystrophy were followed for 3-48 months; three patients with severe atypia underwent surgical treatment, and eight with mild atypia underwent medical treatment. Among the last patients, six showed regression and two, progression of the atypia.

Adult↗
PubMed1988

Vulvar dystrophies in young and premenopausal women.

Eighty-six cases of vulvar dystrophy in young and premenopausal women (age range, 6-53 years) were studied clinically and histopathologically. The most frequent symptom was pruritus associated with burning. Clinical examination showed the presence of white areas in 73% of the patients, red areas in 9% and other signs (such as melanosis) in 18%. Hyperplastic dystrophy was the most frequent type of dystrophy in these patients and was observed in 63% of cases. Cellular atypia was observed in 9.8% of the cases and was found almost exclusively in hyperplastic dystrophy. Epithelial changes suggestive of human papillomavirus infection were found in 4 of the 86 cases of dystrophy, and they were observed only in atypical dystrophies.

Adolescent↗
PubMed1987

Production of prostacyclin, 6-keto-PGF1 alpha and thromboxane B2 by human umbilical vessels increases from the placenta towards the fetus.

The aim of this study was to investigate the production of prostacyclin (PGI2) and thromboxane B2 (TXB2) by incubated samples of umbilical arteries and veins taken at different distances (2, 10, 20, 30 cm) from the placenta to provide additional information relevant to the haemodynamics of umbilical blood flow. The production of PGI2, and 6-keto-PGF1 alpha (the stable metabolite of PGI2), was higher in both veins and arteries as the distance from the placenta at which the vessels were sampled was increased. A similar correlation between production by venous rings and distance from the placenta was observed for TXB2, but there was no apparent gradient of TXB2 production by the samples of arterial rings. No statistically significant variations were discernible in the ratio of 6-keto-PGF1 alpha:TXB2 (approximately 50 in the veins and approximately 20 in the arteries) in relation to the sampling distance. The significance of these high ratios is discussed in relation to umbilical blood flow and fetal well-being and development.

6-Ketoprostaglandin F1 alpha↗