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1.
Eur J Cancer Care (Engl) ; 19(6): 809-15, 2010 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-20105224

RESUMO

The serodiagnostics of extracellular domain (ECD) HER-2/neu has turned into an evidenced-based tumour marker for HER-2/neu-positive breast cancer patients. This study investigated the clinical relevance of immunohistochemical and serum HER-2/neu in 44 patients with advanced ovarian cancer. The Hercept-Test® from DAKO Diagnostics was used to analyse immunohistochemical HER-2/neu expression. The HER-2/neu ECD in serum was determined quantitatively by Bayer Immuno 1™ Immunoanalyser. The HER-2/neu serum values were correlated to the clinical course of disease and to established prognostic factors, i.e. progression-free and overall survival. Some 23% of patients (n = 11) expressed HER-2/neu serum levels higher than 15 ng/mL, whereas only 7.7% (n = 2) of the patients examined by immunohistochemistry showed a HER-2/neu overexpression of the tissue. None of them revealed an overexpression of HER-2/neu ECD by serodiagnostics. HER-2/neu overexpression did not correlate significantly to any of the analysed prognostic factors. According to progression-free and overall survival, there was no significant difference between serologically HER-2/neu-positive or negative patients. For ovarian cancer patients, neither high HER-2/neu serum levels, nor immunohistochemically determined HER-2/neu positivity, appear to predict the course of disease. This study shows a lack of association between the immunohistochemical HER-2/neu status and the serum level of solute extracelluar HER-2/neu domain.


Assuntos
Biomarcadores Tumorais/metabolismo , Neoplasias Ovarianas/metabolismo , Receptor ErbB-2/metabolismo , Adulto , Idoso , Biomarcadores Tumorais/sangue , Progressão da Doença , Feminino , Humanos , Imuno-Histoquímica , Pessoa de Meia-Idade , Neoplasias Ovarianas/mortalidade , Neoplasias Ovarianas/patologia , Prognóstico , Receptor ErbB-2/sangue , Análise de Sobrevida
2.
Eur J Cancer ; 34(11): 1770-6, 1998 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-9893667

RESUMO

Genetic alterations of tumour suppressor genes, for which loss of heterozygosity (LOH) is one mechanism of gene inactivation, are important steps in the development of endometrial cancer. To investigate the clinical relevance of LOH of BRCA1 (17q21), TP53 (17p13) and TCRD (14q11) in endometrial cancer, polymerase chain reaction (PCR)-based fluorescent DNA technology for the detection of microsatellite polymorphisms was applied. One hundred and thirteen archival endometrial cancer samples with matched normal tissues were examined. Allele loss at three loci were correlated with age, tumour size, lymph node status, metastases, stage, histological types, grade, expression of oestrogen receptor (ER) and progesterone receptor (PgR), family history of cancer, previous history of cancer or precursor lesions, and previous history of hormone replacement therapy (HRT). LOH for BRCA1 was detected in 18.1%, of TP53 in 26.9%, and of TCRD in 26.3% of informative cases. LOH of BRCA1 correlated with medium grade, positive ER status, and family history of cancer; LOH of TP53 correlated with younger age, high grade, positive PgR status, and with tumours from patients without HRT; LOH of TCRD correlated only with family history of cancer. LOH at all three loci correlated only with grade and positive family history. Allele loss of one of the three tumour suppressor loci did not correlate with disease-free survival (DFS), but LOH of BRCA1 correlated significantly with decreased overall survival (OS). The latter, together with the correlation of LOH of BRCA1 locus with steroid hormone receptor expression, might give a hint to the potential involvement of the co-localised 17 beta-hydroxysteroid dehydrogenase (HSD) gene in the development of endometrial cancer.


Assuntos
Proteína BRCA1/genética , Neoplasias do Endométrio/genética , Genes p53/genética , Perda de Heterozigosidade , Receptores de Antígenos de Linfócitos T/genética , Adulto , Idoso , Proteína BRCA1/metabolismo , Neoplasias do Endométrio/metabolismo , Feminino , Marcadores Genéticos , Humanos , Pessoa de Meia-Idade , Receptores de Antígenos de Linfócitos T/metabolismo
3.
Cancer Lett ; 146(2): 195-9, 1999 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-10656626

RESUMO

Ovarian carcinomas are known to rapidly develop drug resistance against chemotherapeutic agents. This phenomenon is often associated with the expression of pl70-glycoprotein. A high rate of transcription of the corresponding mdr1-gene in resistant tumors is reported. Amplification of the mdr1-gene has been observed in tumor cell lines exposed to cytotoxic drugs; however, significant information is lacking as to whether this holds true in clinical carcinomas. To fill this gap, we investigated the rate of gene amplification of the mdr1-gene in 63 recurrent ovarian carcinomas and we determined the resistance pattern of these cells using an ex vivo assay. The tumors showed varying ex vivo resistance patterns which did not correlate to clinical parameters. Amplification of the mdr1-gene was not observed in any of the cancer specimens. Therefore, we conclude that mdr1-gene amplification is not a common pathway for the development of chemoresistance in clinical ovarian carcinomas.


Assuntos
Membro 1 da Subfamília B de Cassetes de Ligação de ATP/genética , Amplificação de Genes , Recidiva Local de Neoplasia/tratamento farmacológico , Neoplasias Ovarianas/tratamento farmacológico , Adulto , Idoso , Resistencia a Medicamentos Antineoplásicos , Feminino , Humanos , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/genética , Neoplasias Ovarianas/genética
4.
J Clin Pathol ; 54(11): 866-70, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11684722

RESUMO

BACKGROUND/AIMS: p21(waf) plays a central role both in the regulation of the cell cycle and in DNA replication. Accordingly, p21(waf) is a putative tumour suppressor. The role of p21(waf) expression in breast cancer is still unclear, particularly with respect to the clinical situation. Therefore, this retrospective study was designed to investigate the value of immunohistochemically detected p21(waf) expression in invasive breast cancer. METHODS: Cellular expression of p21(waf) was assessed in 307 breast cancer tissues by immunohistochemistry using the monoclonal antibody, clone 4D10. The data were correlated to established and functional factors of prognosis (age, menopausal status, tumour size, nodal status, tumour grade, receptor status, proliferating cell nuclear antigen (PCNA) expression, Her-2/neu expression, and p53 expression), and to clinical follow up (median observation time, 82 months). RESULTS: Ninety nine of 307 (32.2%) tumour tissues were considered p21(waf) positive (nuclear staining). In the entire study group, p21(waf) expression correlated only with increased PCNA expression (chi(2) test: p = 0.029), and with none of the other investigated markers. In node negative patients (n = 134), p21(waf) expression correlated with increased tumour size and increased PCNA expression, whereas the node positive subgroup (n = 161) showed no correlation with these parameters (lymphonodectomy was done in 295 women). With respect to clinical outcome, p21(waf) expression showed a definite favourable trend in both subgroups (N0: p21(waf) negative, 23 of 87; p21(waf) positive, nine of 43. N+: p21(waf) negative, 63 of 107; p21(waf) positive, 23 of 52), but this observation was not significant (p > 0.05). Multivariate analysis for disease free survival as indicated by Cox regression analysis included all factors investigated. The most striking parameters were nodal status (relative risk (RR), 1.74; p = 0.00001), receptor status (RR, 0.59; p = 0.0085), tumour size (RR, 1.42; p = 0.02), and Her2/neu expression (RR, 1.56; p = 0.033). p21(waf) expression was not significant in the multivariate analysis (p > 0.05). CONCLUSIONS: p21(waf) expression is an independent factor but fails to be of prognostic or predictive value in multivariate analysis. These data confirm the hypothesis of a p53 independent p21(waf) induction and suggest a functional role in the inhibition of PCNA mediated DNA replication.


Assuntos
Neoplasias da Mama/química , Carcinoma Ductal de Mama/química , Ciclinas/análise , Proteínas de Drosophila , Ligases , Proteínas de Neoplasias/análise , Ubiquitina-Proteína Ligases , Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/patologia , Inibidor de Quinase Dependente de Ciclina p21 , Replicação do DNA , Intervalo Livre de Doença , Feminino , Seguimentos , Humanos , Imuno-Histoquímica/métodos , Pessoa de Meia-Idade , Análise Multivariada , Estadiamento de Neoplasias , Proteínas do Tecido Nervoso/análise , Antígeno Nuclear de Célula em Proliferação/análise , Receptores de Estrogênio/análise , Receptores de Progesterona/análise , Estudos Retrospectivos , Proteína Supressora de Tumor p53/análise
5.
J Clin Pathol ; 49(1): 57-64, 1996 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-8666688

RESUMO

AIM: To test whether immunoradiometric or immunohistochemical detection of lysosomal protease cathepsin D in breast cancer is more predictive of outcome. METHODS: Tumour tissues from 270 primary breast cancer patients were evaluated for the expression of cathepsin D using immunohistochemistry (IH; paraffin embedded tissues) and an immunoradiometric assay (IRMA; cytosol from frozen tissues). Immunohistochemical scores were based on immunoreaction in tumour cells and tumour associated macrophages. RESULTS: IRMA values (cut off 40 fmol/mg cell protein) correlated significantly with IH values. Recorded incidences of positive immunoreaction in tumour cells using two different cut off values were 52% and 35%, respectively. Macrophages stained positive in 31% of tissues. Combined evaluation of tumour cells and macrophages resulted in positivity rates of 59% and 48%, respectively. Node status was the only variable found to correlate with cathepsin D expression. IH results correlated significantly with clinical outcome (median observation time 68 months) in node negative patients (n = 120) but not in node positive patients (n = 145). Cathepsin D positivity as measured by IRMA was not related to clinical outcome in either group. On multivariate analysis in the node negative group, IH detection of cathepsin D appeared to be the only independent factor indicating prognosis. For node positive patients, tumour grade, size, and receptor status were of prognostic relevance. CONCLUSIONS: Because of the simple methodology and the minimal amount of tissue used for analysis, immunohistochemistry was preferred to immunoradiometry for cathepsin D measurement; it also provided more predictive data with respect to prognosis.


Assuntos
Biomarcadores Tumorais/metabolismo , Neoplasias da Mama/enzimologia , Catepsina D/metabolismo , Idoso , Intervalo Livre de Doença , Feminino , Humanos , Imuno-Histoquímica , Ensaio Imunorradiométrico , Pessoa de Meia-Idade , Análise Multivariada , Prognóstico , Estudos Retrospectivos , Taxa de Sobrevida
6.
J Soc Gynecol Investig ; 7(5): 313-6, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-11035285

RESUMO

OBJECTIVE: To establish the role of phosphate and tensin homologue on chromosome 10 (PTEN) mutations in tumorigenesis of the ovary, we determined the mutational spectrum of the PTENgene in surgical specimens of ovarian carcinomas. METHODS: The study group consisted of 86 ovarian cancer specimens (18 fluids, 68 solid specimens), including 30 primary ovarian cancer specimens and 56 of relapsed ovarian cancer from women with a median age of 57.9 years and a range of 27-85 years. Each of the nine exons of the PTEN gene was amplified separately by polymerase chain reaction (PCR). Both strands of the PCR products were sequenced directly by standard cycle sequencing procedures and subsequent computer-aided alignments with the wild-type sequence. RESULTS: In ascitic fluids of two women with recurrence of cancer, we observed mutations: one seven-base-pair insertion at codon 52 (GATGATG) and the other a base-pair substitution resulting in an amino acid change (T131I). We found no mutation in the primary ovarian cancers. CONCLUSIONS: Our data indicate that PTEN mutations have a subordinate role in tumorigenesis of the ovary.


Assuntos
Mutação , Recidiva Local de Neoplasia/genética , Neoplasias Ovarianas/genética , Monoéster Fosfórico Hidrolases/genética , Proteínas Supressoras de Tumor , Adulto , Idoso , Idoso de 80 Anos ou mais , Códon , DNA de Neoplasias/análise , Feminino , Humanos , Pessoa de Meia-Idade , PTEN Fosfo-Hidrolase , Reação em Cadeia da Polimerase
7.
J Soc Gynecol Investig ; 2(4): 653-9, 1995.
Artigo em Inglês | MEDLINE | ID: mdl-9420872

RESUMO

OBJECTIVE: We sought to determine whether the immunohistochemical detection of epidermal growth factor receptor (EGF-R) in primary cancer tissues is of prognostic significance in patients with breast carcinoma. METHODS: Paraffin-embedded tissues from 244 study subjects with primary breast carcinomas were tested immunohistochemically for the presence of EGF-R and were compared in a retrospective study with clinical outcome. RESULTS: Epidermal growth factor receptor was detected in the tumors of 49 (20.1%) of the 244 study subjects. The incidence of EGF-R detection was comparable in subjects with disease-free lymph nodes (T1-4, N0, M0, n = 111; EGF-R present 22.5%) or those whose nodes contained carcinoma (T1-4, N+, M0, n = 133; EGF-R present 18.9%). No reliable correlation was found in either group between EGF-R detection and clinical, functional, or morphologic prognostic indicators that included age, menopausal status, tumor size, tumor grade, nodal status, and hormone receptor status. Relapse-free survival and overall survival (median observation time 62.5 months) did not differ between patients with EGF-R-positive or EGF-R-negative breast carcinoma specimens. CONCLUSIONS: In our experience, the immunohistochemical determination of EGF-R in routine formalin-fixed, paraffin-embedded tumor specimens fails to provide useful information concerning the prognosis of patients with primary breast carcinoma.


Assuntos
Biomarcadores Tumorais/análise , Neoplasias da Mama/patologia , Receptores ErbB/análise , Fatores Etários , Neoplasias da Mama/mortalidade , Membrana Celular/patologia , Citoplasma/patologia , Intervalo Livre de Doença , Feminino , Humanos , Imuno-Histoquímica/métodos , Linfonodos/patologia , Metástase Linfática , Menopausa , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Prognóstico , Receptores de Estrogênio/análise , Receptores de Progesterona/análise , Taxa de Sobrevida
8.
J Soc Gynecol Investig ; 5(2): 102-7, 1998.
Artigo em Inglês | MEDLINE | ID: mdl-9509389

RESUMO

OBJECTIVE: To determine the immunologic characteristics of tumor infiltrating lymphocytes (TILs) in comparison with the corresponding peripheral blood lymphocytes (PBLs) of patients with ovarian cancer in order to detect specific antitumor-reactive-immunocompetent cells. METHODS: Tumor infiltrating lymphocytes and PBLs were phenotyped by their surface markers, cytokine pattern, proliferation rate, and cytotoxic ability. RESULTS: The phenotypes of both lymphocyte populations were very heterogeneous. Peripheral blood lymphocytes had a higher proliferative activity and cytotoxicity against natural killer-sensitive tumor cells than the corresponding TILs. Furthermore TILs showed increased interleukin-4 expression whereas in PBLs, interferon-gamma production predominated. CONCLUSION: Peripheral blood lymphocytes showed more potentially valuable behavioral characteristics than TILs. In the future we need to combine several methods in order to define immune cells with antitumor activity. These cells should be expanded ex vivo and stimulated specifically for use in the immunotherapy of ovarian cancer.


Assuntos
Linfócitos do Interstício Tumoral/imunologia , Linfócitos/imunologia , Neoplasias Ovarianas/imunologia , Idoso , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD8-Positivos/imunologia , Divisão Celular , Citotoxicidade Imunológica , Feminino , Humanos , Imunofenotipagem , Interferon gama/biossíntese , Interleucina-4/biossíntese , Células Matadoras Naturais/imunologia , Pessoa de Meia-Idade
9.
Oncol Rep ; 6(5): 1029-33, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10425298

RESUMO

In a clinical study we found that patients with primary node negative breast cancer whose tumors showed high expression of H-ras had a significantly better prognosis than patients whose carcinomas did not. In the present study, these tissue specimens showed no H-ras gene mutation. The rate of gene amplification was 5% and did not correlate with the level of H-ras expression. These data indicate that increased expression and not amplification of the H-ras gene is valuable, if H-ras has a favorable role with respect to clinical outcome. This might be a general protective reaction as long as no mutation event has occurred in the H-ras gene.


Assuntos
Neoplasias da Mama/genética , Genes ras , Adulto , Idoso , Feminino , Amplificação de Genes , Humanos , Pessoa de Meia-Idade , Mutação
10.
Anticancer Res ; 16(2): 1011-8, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-8687092

RESUMO

The lysosomal protease Cathepsin D and the serine protease urokinase plasminogen activator (uPA) are suspected to indicate poor prognosis in primary breast carcinoma. We tested Cathepsin D and uPA immunohistochemically in 281 surgical specimens of primary ductal infiltrating breast carcinomas. Staining was evaluated, taking intracytoplasmic immunoreactions into account, in tumour cells and tumour infiltrating macrophages. Positivity was established in 48.4% and 58.0% of tissue samples for cathepsin D and uPA respectively (co-expression: 67.6%). In patients with cathepsin D- or uPA-positive tumours, relapses were more frequent and disease-free survival was shorter irrespective of nodal status, receptor status or menopausal status, (median observation time 74 months). However, this trend was statistically significant only for cathepsin D. With stepwise cox regression analysis, borderline significance (p = 0.07) was calculated for cathepsin D only in node-negative patients. The combination of cathepsin D with uPA measurements did not enhance its prognostic value. Immunohistochemical detection of Cathepsin D could potentially be used to identify patients with poor prognosis in the group of node negative breast cancer patients.


Assuntos
Neoplasias da Mama/química , Carcinoma Ductal de Mama/química , Catepsina D/análise , Proteínas de Neoplasias/análise , Ativadores de Plasminogênio/análise , Ativador de Plasminogênio Tipo Uroquinase/análise , Neoplasias da Mama/patologia , Carcinoma Ductal de Mama/patologia , Feminino , Humanos , Imuno-Histoquímica , Menopausa , Pessoa de Meia-Idade , Análise Multivariada
11.
Anticancer Res ; 20(6D): 5073-6, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-11326671

RESUMO

New anti-cancer strategies have been developed with respect to proteinkinase C (PKC) as a potential target for therapeutic intervention in patients with advanced breast cancer. Using cell lines, most of the preliminary data are encouraging but insufficient information is available concerning clinical breast cancer cells. Thus, we decided to clarify the involvement of PKC in clinical breast carcinoma cells. We isolated viable tumor cells from fluids or tissue burden of eleven patients with advanced breast cancer. Performance of short term cultures supplemented with commonly used antineoplastics mimicked the clinical situation. We determined the ex vivo chemosensitivity pattern of each cell population. Additionally, we analysed total PKC activity and quantified the PKC-isoform eta. All assays showed a heterogeneous highly variable distribution of the data investigated. No tendency could be observed regarding the influence of the therapeutics on PKC activity, PKC-eta expression or chemoresistance, respectively. Moreover, changes in neither PKC-eta expression, PKC activity nor chemoresistance induced by a particular drug in an individual tumor necessarily predicted the same reaction in another tumor to this agent. Therefore, we concluded that more explorative data concerning this topic are required prior to the development of a clinically useful therapy regimen with PKC as the major target.


Assuntos
Neoplasias da Mama/enzimologia , Isoenzimas/fisiologia , Proteína Quinase C/fisiologia , Antineoplásicos/farmacologia , Neoplasias da Mama/patologia , Resistencia a Medicamentos Antineoplásicos , Ensaios de Seleção de Medicamentos Antitumorais , Humanos , Isoenzimas/efeitos dos fármacos , Proteína Quinase C/efeitos dos fármacos , Proteína Quinase C/metabolismo , Células Tumorais Cultivadas
12.
Anticancer Res ; 20(6D): 5069-72, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-11326670

RESUMO

The relationship between apoptosis and chemosensitivity remains complex. We tested the chemosensitivity of 45 patients with advanced breast cancer (BC) ex vivo against anthracyclines (A: doxorubicin, epirubicin), taxanes (T: paclitaxel, docetaxel), cisplatin (DDP) and CMF and any correlation with the expression of p53, Bcl-2 and apoptosis. Viable cells were processed for ex vivo ATP Tumor Chemosensitivity Assay (ATP-TCA). Immunohistochemistry was performed in corresponding tumor samples. Apoptosis prior to chemotherapy was assayed using a TUNEL Test. Of 45 BC tested, 18 (40%) were p53+ and 37 (82%) showed high Bcl-2 expression. Apoptosis was detected in 29 (64.4%) specimens. The Ex vivo Response Rate (EVRR) for T was 75.6% in all cases. This was the highest rate among the 4 drugs tested followed by CMF (66.7%). For A and DDP the positive rates were lower (27.6% and 10.6%, respectively). A significant correlation (r = 0.589, p < or = 0.01) was found between tumors which were sensitive to A and DDP. There was no association between chemosensitivity and apoptosis. Moreover tests for p53 and Bcl-2 did not show a correlation to ex vivo chemosensitivity. Pretreatment apoptotic parameters are unlikely to predict the individual response of breast cancer to antineoplastic agents.


Assuntos
Apoptose , Neoplasias da Mama/metabolismo , Proteínas Proto-Oncogênicas c-bcl-2/biossíntese , Proteína Supressora de Tumor p53/biossíntese , Antineoplásicos/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Feminino , Humanos , Estatística como Assunto
13.
Clin Exp Med ; 1(1): 1-8, 2001 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-11467396

RESUMO

Proteinkinase C (PKC) is involved in carcinogenesis, proliferation, and metastatic spread of breast cancer. New anticancer strategies have been developed with PKC as a potential target for therapeutic intervention. However, most of the encouraging preliminary data were observed in breast cancer cell lines only. Insignificant information is available concerning clinical breast cancer cells. Our aim was to investigate the involvement of PKC in clinical breast carcinoma cells. To this end, we set up short-term cultures (3 days) of native tumor cells derived from 12 patients with advanced breast cancer. Addition of commonly used antineoplastics, including both single agents and combinations (tamoxifen, Adriamycin, paclitaxel, Adriamycin plus paclitaxel, epirubicin plus 4-OOH-cyclophosphamide, mitoxantrone, mitoxantrone plus vinorelbin, vinorelbin), simulated the clinical situation. In relation to each control we determined total PKC activity and quantified the PKC-zeta isoform. In 6 patients, no obvious alteration of PKC activities was detected. In the remainder, either inhibition or augmentation of PKC activity in the presence of cytostatics was detected. However, no tendency could be observed concerning the influence of the therapeutics on PKC activity. PKC-zeta expression was much more heterogeneous than activity assays. Although anticancer drugs influenced PKC-zeta expression, the results showed no uniformity with regard to PKC-zeta expression. Moreover, PKC-zeta expression did not correlate with total PKC activity, indicating a differential expression of different PKC isoenzymes. Therefore, we conclude that both PKC activity and PKC-zeta expression differ individually. More data concerning this topic are necessary prior to offering a clinically useful PKC-tailored regimen.


Assuntos
Antineoplásicos/farmacologia , Protocolos de Quimioterapia Combinada Antineoplásica/farmacologia , Neoplasias da Mama/enzimologia , Neoplasias da Mama/patologia , Proteína Quinase C/genética , Proteína Quinase C/metabolismo , Adulto , Idoso , Técnicas de Cultura de Células/métodos , Inibidores Enzimáticos/farmacologia , Feminino , Regulação Enzimológica da Expressão Gênica/efeitos dos fármacos , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Humanos , Pessoa de Meia-Idade , Invasividade Neoplásica , Estadiamento de Neoplasias , Floretina/farmacologia , Células Tumorais Cultivadas
14.
Rofo ; 176(5): 688-93, 2004 May.
Artigo em Alemão | MEDLINE | ID: mdl-15122467

RESUMO

PURPOSE: To evaluate preoperative contrast enhanced MR imaging in clinically, mammographically and/or ultrasonographically established breast cancer. MATERIALS AND METHOD: From September 1998 to August 1999, preoperative contrast-enhanced MR imaging of the breast was performed in 91 patients with lesions highly suggestive of malignancy (BIRADS IV and V) by clinical, mammographic, and/or ultrasonographic criteria. MR imaging findings were postsurgically correlated with other imaging, intraoperative and histopathologic results. RESULTS: Histopathologic analysis revealed 61 (66 %) malignant and 31 (34 %) benign lesions. In 63 (69 %) of the 91 investigated patients, MR mammographies were classified as tumor suspect and in the remaining 28 (31 %) cases as benign. The sensitivity, specificity and accuracy were 90 %, 67 % and 81 % for contrast-enhanced MR imaging. Additional tumor manifestations (multifocal or multicentric disease, contralateral carcinoma) were found by MR imaging alone in 10 patients (11 %). CONCLUSION: Contrast-enhanced MR imaging may reveal unsuspected multifocal, multicentric or contralateral breast carcinoma that changes the surgical therapy if the intention is total tumor removal. The prognostic role of a potentially more radical surgical therapy on the basis of these findings is not clear.


Assuntos
Neoplasias da Mama/diagnóstico , Imageamento por Ressonância Magnética/métodos , Mamografia , Ultrassonografia Mamária , Mama/patologia , Doenças Mamárias/diagnóstico , Doenças Mamárias/patologia , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Carcinoma Ductal de Mama/diagnóstico , Carcinoma Ductal de Mama/patologia , Carcinoma Intraductal não Infiltrante/diagnóstico , Carcinoma Intraductal não Infiltrante/patologia , Meios de Contraste , Diagnóstico Diferencial , Feminino , Fibroadenoma/diagnóstico , Fibroadenoma/patologia , Doença da Mama Fibrocística/diagnóstico , Doença da Mama Fibrocística/patologia , Gadolínio DTPA , Granuloma/diagnóstico , Granuloma/patologia , Humanos , Metástase Linfática/diagnóstico , Mastite/diagnóstico , Mastite/patologia , Estadiamento de Neoplasias , Palpação , Prognóstico , Sensibilidade e Especificidade , Fatores de Tempo
15.
Nuklearmedizin ; 29(6): 269-73, 1990 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-2075088

RESUMO

Solitary abnormalities in bone scintigrams of cancer patients are a finding causing special diagnostic problems. In a prospective study the value of MRI imaging of the bone marrow was to be ascertained when compared to recognized X-ray studies, as a method of clarifying suspect bone scintigraphy findings. 25 cancer patients presenting with a solitary suspect abnormality in bone scintigrams were examined by X-rays and MRI. In 15 patients, MRI showed that metastases were the probable cause of the hot spot. In 7 patients, radiography, the routinely used method to confirm or exclude the presence of metastases, failed to detect these metastases. In the remaining 10 patients other causes of increased activity in the bone scintigrams could be demonstrated, e.g. fracture, degenerative disease, benign tumour. The results were confirmed by biopsy, operation, autopsy or follow-up. Considering the clinical consequences of the diagnosis of bone metastases, we suggest that a bone marrow MRI of the affected region should be performed to clarify the cause of a solitary hot spot in bone scintigrams of cancer patients, especially if X-ray studies are inconclusive.


Assuntos
Medula Óssea/patologia , Neoplasias Ósseas/secundário , Imageamento por Ressonância Magnética , Neoplasias/patologia , Adulto , Idoso , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/patologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/epidemiologia , Estudos Prospectivos , Cintilografia , Medronato de Tecnécio Tc 99m
16.
Nuklearmedizin ; 37(4): 134-40, 1998 Jun.
Artigo em Alemão | MEDLINE | ID: mdl-9650213

RESUMO

AIM: The radiocytotoxic effects in estrogen receptor (ER) containing MCF-7 cells of a mamma carcinoma were investigated following incubation with [125I]E ranging from 1 h to 24 h. METHODS: The receptor status of the cells was confirmed by immunohistochemical staining. The accumulation of [125I]E in MCF-7 cells was tested in the presence and absence of radioinert E and [127I]E and in ER-negative cells in comparison to ER-positive cells. The subcellular distribution was investigated in 0.25 M Saccharose by ultra centrifugation. The radiocytotoxicity was assessed in ER-positive and negative cells by a standard colony forming assay after incubating with [125I]E (1.85 kBq/ml-55.5 kBq/ml) for 1, 2, 4, 8, 12, and 24 h. RESULTS: A significant cytotoxicity was observed only when ER-rich MCF-7-cells were incubated with [125I]E alone. The maximal cytotoxic effect was a reduction of survival fraction to 20-25%. This was achieved at radioactivity concentrations > 37 kBq/ml. Maximal effect was seen after 8 h incubation, extension of incubation time did not further increase toxicity. CONCLUSION: The results suggest that the radioactivity was bound to ER. Through their nuclear localization radioestrogens tagged with radionuclides emitting very low energy electrons (Auger electrons) bear potential for therapy by ER-mediated deposition of lethal doses of ionizing radiation to single cells without affecting neighbouring cells. But, instead of 125I the shorter-living 123I shall be used for labelling because the deciding radiation effectes occur within the first 8 h.


Assuntos
Sobrevivência Celular/efeitos da radiação , Estradiol/análogos & derivados , Radioisótopos do Iodo , Receptores de Estrogênio/metabolismo , Transporte Biológico , Neoplasias da Mama , Estradiol/farmacocinética , Estradiol/toxicidade , Feminino , Humanos , Cinética , Células Tumorais Cultivadas
17.
Acta Cytol ; 41(4 Suppl): 1299-304, 1997.
Artigo em Inglês | MEDLINE | ID: mdl-9990262

RESUMO

BACKGROUND: Transitional cell ("Brenner") tumors represent about 2% of all ovarian neoplasms. Brenner tumors are almost always benign. Malignant Brenner tumors of the ovary resemble urothelial carcinomas and are extremely rare. CASE: A 77-year-old, white female presented with malignant Brenner tumor in both ovaries as well as lung and abdominal metastases. The cytology of the ascitic fluid revealed many activated mesothelial cells and three-dimensional cell clusters arranged in a papillary pattern. The round to oval nuclei displayed mild anisokaryosis and hyperchromasia but had a quite evenly dispersed opaque or finely granular nucleoplasm. Enfoldings of the nuclear membrane gave them the appearance of so-called coffee bean nuclei. The cytoplasm stained light bluish. CONCLUSION: Knowledge of the cytologic features of ascitic fluid might allow a preoperative diagnosis of malignant, or at least proliferating, ovarian Brenner tumor.


Assuntos
Neoplasias Abdominais/secundário , Líquido Ascítico/patologia , Tumor de Brenner/patologia , Neoplasias Pulmonares/secundário , Neoplasias Ovarianas/patologia , Neoplasias Abdominais/diagnóstico , Idoso , Biópsia , Tumor de Brenner/diagnóstico , Núcleo Celular/patologia , Feminino , Humanos , Neoplasias Pulmonares/diagnóstico , Neoplasias Ovarianas/diagnóstico , Células Estromais/patologia
18.
Zentralbl Gynakol ; 127(6): 380-4, 2005 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-16341981

RESUMO

Laparoscopy is used for most surgical procedures in gynaecology. In general complications are rare. However, one of the most critical steps is the initial laparoscopic entry into the peritoneal cavity. According to the literature serious complications occur in approximately 1-2/1 000 cases. Whereas major vascular injuries are mainly recognised immediately, delayed recognition of bowel injuries is frequent. Complication rates of different entry procedures used in gynaecological laparoscopy are similar even in high risk patients (intraperitoneal adhesions, obesity). Utilising an open - instead a closed - entry (either by Veress needle or first trocar) technique or alternativ entry positions are suggested by some authors. This review presents data available in the literature and highlights that open laparoscopy is no gold standard.


Assuntos
Abdome , Doenças dos Genitais Femininos/cirurgia , Laparoscopia/métodos , Feminino , Humanos , Laparoscopia/efeitos adversos
19.
Pathologe ; 14(6): 313-7, 1993 Dec.
Artigo em Alemão | MEDLINE | ID: mdl-8121884

RESUMO

Cathepsin D expression was immunohistochemically tested in 126 formalin-fixed and paraffin-embedded tissues from primary breast cancers. Specific staining was noted in the cytoplasm of tumor cells in 43% of tumors. In 44% of cases cathepsin D was detected in tumor stroma. A total of 63% of the tissue samples stained positive for cathepsin D (tumor and/or stromal staining). In all cases the cathepsin D level was measured in tumor cytosol by radioimmunoassay. Cytosols were considered positive when cathepsin D concentrations of over 40 pmol/mg cell protein were found. Comparison of immunohistochemical and biochemical detection of cathepsin D revealed a 76% concordance rate. Univariate analysis showed a significant correlation of cathepsin D expression with axillary node involvement; no correlation was found with tumor size, tumor grade, steroid receptor status or age of patients. Our results demonstrate a close agreement between the results of biochemical and of immunohistochemical cathepsin D detection.


Assuntos
Biomarcadores Tumorais/análise , Neoplasias da Mama/patologia , Catepsina D/análise , Adulto , Idoso , Mama/patologia , Citosol/ultraestrutura , Feminino , Humanos , Técnicas Imunoenzimáticas , Ensaio Imunorradiométrico , Linfonodos/patologia , Metástase Linfática , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Prognóstico
20.
Arch Gynecol Obstet ; 255(4): 201-9, 1994.
Artigo em Inglês | MEDLINE | ID: mdl-7695367

RESUMO

In a prospective study we have investigated the question of predisposing and reactive personality traits in breast cancer patients. The design of the study incorporated a prebioptic collection of data by means of an interview and psychological test questionnaires (STAI, SVF, FPI, CIP-DS), as well as follow-up questioning after a one year interval. In comparison with operated women with benign biopsy findings no unequivocal indications of a personality type predisposed to cancer were found. Both patient groups showed a high preoperative potential for anxiety. The tendency to suppress emotions, trivialise and to display self-pity was particularly noticeable in patients with advanced tumours at the time of diagnosis. Even after the disease had run for one year, it was not possible to demonstrate a distinct characterisation of the breast cancer patients by psychological testing methods. An increased concern over health, an inclination towards resignation and social isolation and a diminished contentment with life marked the changes that could be measured by psychological tests in some of the women affected.


Assuntos
Neoplasias da Mama/psicologia , Personalidade , Adulto , Idoso , Ansiedade , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Prospectivos
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