False-negative finding in urodynamic study for the chief complaint. Does it interfere with the clinical outcomes for the treatment of SUI or OAB syndromes?

ABSTRACT Purpose: False-negative urodynamic findings may mislead or prevent planned treatments due to unmatched findings with the clinical presentation. We hypothesized that the absence of urodynamic demonstration of SUI or OAB on urodynamics would interfere with clinical outcomes. Materials and Methods: Materials and Methods: We prospectively studied 124 women with (94) or without (30) demonstrable SUI after sling operations. Similarly, 64 women with OAB syndrome with (38) or without (26) demonstrable DO were also compared after treatment with anticholinergic agents. Patients were assessed with the UDI-6 and IIQ-7 questionnaires 3 and 6 months after treatment. Results: Only 76% of SUI patients demonstrated urine leakage during urodynamics. The UDI-6 score was higher in the demonstrable-SUI and demonstrable-DO groups, while the IIQ-7 score was comparable within the incontinence or urgency/frequency groups. Demonstrable and non-demonstrable SUI-operated patients showed similar outcomes. Patients with urgency syndromes with or without demonstrable DO had a similar rate of improvement with anticholinergic therapy. Conclusions: Women with clinical complaints of SUI objectively demonstrated on urodynamics presented the same subjective clinical outcome as those with SUI lacking objective demonstration when measured by the UDI-6 and IIQ-7 questionnaires. Similarly, patients with OAB syndrome with or without demonstrable DO had similar clinical improvement when treated with anticholinergics and measured using the same questionnaires.

False-negative finding in urodynamic study for the chief complaint. Does it interfere with the clinical outcomes for the treatment of SUI or OAB syndromes?

PURPOSE: False-negative urodynamic findings may mislead or prevent planned treatments due to unmatched findings with the clinical presentation. We hypothesized that the absence of urodynamic demonstration of SUI or OAB on urodynamics would interfere with clinical outcomes. MATERIALS AND METHODS: We prospectively studied 124 women with (94) or without (30) demonstrable SUI after sling operations. Similarly, 64 women with OAB syndrome with (38) or without (26) demonstrable DO were also compared after treatment with anticholinergic agents. Patients were assessed with the UDI-6 and IIQ-7 questionnaires 3 and 6 months after treatment. RESULTS: Only 76% of SUI patients demonstrated urine leakage during urodynamics. The UDI-6 score was higher in the demonstrable-SUI and demonstrable-DO groups, while the IIQ-7 score was comparable within the incontinence or urgency/frequency groups. Demonstrable and non-demonstrable SUI-operated patients showed similar outcomes. Patients with urgency syndromes with or without demonstrable DO had a similar rate of improvement with anticholinergic therapy. CONCLUSIONS: Women with clinical complaints of SUI objectively demonstrated on urodynamics presented the same subjective clinical outcome as those with SUI lacking objective demonstration when measured by the UDI-6 and IIQ-7 questionnaires. Similarly, patients with OAB syndrome with or without demonstrable DO had similar clinical improvement when treated with anticholinergics and measured using the same questionnaires.

Can We State Stable Bladder? How Many Repetitions Should We Do for an Appropriate Demonstration of Involuntary Detrusor Contraction?

AIMS: Involuntary Detrusor Contraction (IDC) may alter therapeutic plans; therefore, urodynamic demonstration (UD) is pivotal. We explore if same session repetitions enhance its demonstration and minimize false-negative results. METHODS: Two hundred fifty two women (mean age 47 ± 5.7) had 4 full repetitions of UD with the last round filled with 4°C fluid (Ice-water test). IDC was diagnosed if with at least 3 cm H2O after artifacts were ruled out. RESULTS: 44.4% of the cases showed IDC in the first round of the exam but it could be demonstrated in 88.5% of the women if 4 rounds are taken into account. Only 2 cases showed IDC exclusively in the first round. Nine cases (3.5%) showed IDC in the first round and only on Ice-test, while all other IDC-detected cases revealed it in scattered patterns along the repetitions. Likewise, IDC detection on the second, third and fourth rounds varied widely and unpredictably, many failing to show a consistent pattern of presentation after its detection. IDC wave amplitude did not show any correlation to the detection. CONCLUSIONS: Urodynamic repetition is a necessary procedure where IDC is important to demonstrate, as its false-negative rate is high and its unpredictable pattern of detection may be improved by repetition.

One hundred cases of sui treatment that failed: a prospective observational study on the behavior of patients after surgical failure

Objectives Determine what happens to patients after unsuccessful SUI operations and to explore the reasons why these patients change doctors. Materials and Methods One hundred consecutive failed patients treated for SUI were interviewed about the exams requested after persistence of the incontinence as well as the reasons they abandoned their primary doctors through a structured questionnaire. Results Among the patients with cases of anterior colporrhaphy, bladder suspensions or slings, 34.3%, 13.7% and 8.3%, respectively, were not offered any further type of investigative procedures to clarify the failure. Urodynamic evaluations were recommended in 75% of failed slings, and 66.6% of the patients proceeded with these tests. In contrast, only 31% of patients with bladder suspensions and 40% of patients with anterior colporrhaphy were recommended for urodynamic investigations, and only 44.4% and 28.5% of them, respectively, proceeded with the option. Patients´ delusions were reinforced by the doctors’ attitude toward the investigations. Vacuous justifications and the lack of intention to seek improvement were the driving forces causing the patients to change doctors. Conclusion Unsuccessful patients are evaluated in a non-protocol form. Difficulty in clarifying the reasons for surgical failure and the disruption of the doctor-patient relationship are the main reasons why patients abandon them. .

One hundred cases of SUI treatment that failed: a prospective observational study on the behavior of patients after surgical failure.

OBJECTIVES: Determine what happens to patients after unsuccessful SUI operations and to explore the reasons why these patients change doctors. MATERIALS AND METHODS: One hundred consecutive failed patients treated for SUI were interviewed about the exams requested after persistence of the incontinence as well as the reasons they abandoned their primary doctors through a structured questionnaire. RESULTS: Among the patients with cases of anterior colporrhaphy, bladder suspensions or slings, 34.3%, 13.7% and 8.3%, respectively, were not offered any further type of investigative procedures to clarify the failure. Urodynamic evaluations were recommended in 75% of failed slings, and 66.6% of the patients proceeded with these tests. In contrast, only 31% of patients with bladder suspensions and 40% of patients with anterior colporrhaphy were recommended for urodynamic investigations, and only 44.4% and 28.5% of them, respectively, proceeded with the option. Patients' delusions were reinforced by the doctors' attitude toward the investigations. Vacuous justifications and the lack of intention to seek improvement were the driving forces causing the patients to change doctors. CONCLUSION: Unsuccessful patients are evaluated in a non-protocol form. Difficulty in clarifying the reasons for surgical failure and the disruption of the doctor-patient relationship are the main reasons why patients abandon them.

Outline of 3,830 male patients referred to urodynamic evaluation for lower urinary tract symptoms: how common is infravesical outlet obstruction?

INTRODUCTION: The prevalence of bladder outlet obstruction in men has been overestimated leading to improper clinical results after transurethral resection of the prostate. PATIENTS AND METHODS: 3,830 consecutive male cases submitted for urodynamic evaluation were prospectively analyzed using a Schaefer nomogram. The prevalence of detrusor overactivity and the occurrence of obstruction were prospectively studied using standardized urodynamic practice. RESULTS: Infravesical obstruction was diagnosed in 44.8% of the studied population: 0.7% of the obstructed cases were obstructed at the sphincter zone and 7.9% showed obstruction as a high-pressure, high-flow-rate pattern. Detrusor overactivity was demonstrated in 73.9% of the obstructed cases and in 22% of the unobstructed. Older patients (>60 years) seemed more likely (odds ratio: 2.8) to present detrusor overactivity, but at the same time showed less frequent obstruction. The oldest subjects (>80 years) showed a lower prevalence of obstruction, although overactive bladder was a common finding. CONCLUSION: Infravesical obstruction is less frequent than previously stated. The common assumption that obstruction is the cause of lower urinary tract symptoms in older men is wrong. Older men are more likely to suffer from detrusor overactivity resulting from lower urinary tract symptoms rather than infravesical obstruction. Urodynamic studies seem to be crucial for a proper diagnosis in men considered candidates for surgical treatment.

Braquiterapia de alta taxa de dose no tratamento do carcinoma da próstata: análise da toxicidade aguda e do comportamento bioquímico / High-dose rate brachytherapy in the treatment of prostate cancer: acute toxicity and biochemical behavior analysis

OBJETIVO: Analisar a resposta bioquímica nas variáveis volume prostático, valor do antígeno prostático específico (PSA), escores de Gleason, estádio, risco da doença e hormonioterapia. MATERIAIS E MÉTODOS: No período de fevereiro de 1998 a julho de 2001, 46 pacientes com câncer de próstata foram tratados com radioterapia, numa combinação de teleterapia e braquiterapia de alta taxa de dose (BATD). A idade variou de 51 a 79 anos (média de 66,4 anos). O estádio T1c foi o mais freqüente: 30 (65 por cento). O escore de Gleason era abaixo de 7 em 78 por cento dos pacientes. O PSA variou de 3,4 a 33,3, estando abaixo de 10 em 39 por cento das vezes. O volume prostático médio foi de 32,3 cc. Um total de 28 por cento dos pacientes recebeu hormonioterapia. A dose de teleterapia variou de 45 a 50,4 Gy, associada a quatro frações de BATD de 4 Gy. RESULTADOS: O seguimento variou de 6 a 43 meses. Quatro pacientes perderam seguimento e quatro morreram (um por doença). Dos 39 pacientes analisados, 76 por cento apresentaram PSA menor que 1,5. Nenhuma das variáveis analisadas foi estatisticamente significante (p > 0,05) com relação ao controle bioquímico. CONCLUSAO: A utilização de BATD foi eficiente no tratamento do câncer de próstata e, neste estudo, as variáveis consideradas como fatores prognósticos não interferiram no controle bioquímico.

Alternative grafting technique for patients unsuited to heterotopic transplantation due to diseased pelvic conditions.

INTRODUCTION: An alternative technique for kidney transplantation is presented for patients in whom the use of pelvic vessels is precluded. PATIENTS AND METHODS: Of 482 cases of kidney or pancreas-kidney transplants, 4 were unsuited to heterotopic grafting, 1 due to multiple operations in the fossae and the 3 others due to extensive vascular occlusive disease. The patients were studied preoperatively by magnetic resonance angiography, which revealed extensive occlusive disease of the distal aorta and/or iliac vessels. RESULTS: The patients received kidneys from living related donors as a third or second transplant opportunity in the orthotopic position (2 cases). Gross dissection of the aorta revealed a thickened wall, impeding direct anastomoses between the recipient's arteries and the donated organ. After a termino-lateral Dacron graft to the aorta, all cases were stented for uretero-uretero anastomosis. Recovery with respect to the renal graft was uneventful for all cases. CONCLUSIONS: Alternative direct grafting from the aorta represents a viable and easy way to perform kidney transplants in patients unsuited to the heterotopic approach.

Pubo-fascial versus vaginal sling operation for the treatment of stress urinary incontinence: a prospective study.

AIMS: To compare the long-term results of stress urinary incontinence (SUI) treatment involving the fascial or vaginal sling operations. MATERIAL AND METHODS: Two-hundred-thirty-two women were consecutively submitted to fascial or vaginal sling operations due to urodynamic proven SUI. The fascial group had a median age of 47.3 years with a parity of 2.2 and 1.8 surgeries/patient, while the vaginal group demonstrated a median age of 48.5 years with a median parity of 3.1 and 2.2 anterior surgeries/patient. The results were subjectively classified as cured--no further pads, greatly improved--very rare dribbling, improved--eventual dribbling necessitating one pad, no cure--with no urine loss change and worse. The number of pads/day, the presence of urgency or urge-incontinence episodes were all measured. Statistical analysis using Fisher's exact test was employed. RESULTS: The patients were followed up for an average time of 70.3 and 44.9 months, in the fascial and vaginal sling group respectively. Subjective clinical success rate was 93.7% for the fascial sling group and 79.8% for the vaginal one, however, the stratification of the results favored the fascial sling group mostly with 74.4% (94 cases) of the cases with total urinary control and no voiding dysfunctions. Only two cases (1.6%) in this group classified themselves as worsened. On the other hand, the vaginal sling subset revealed cure with total clinical satisfaction and no urinary complaint in 61.5% (62 females) (P > 0.05). Thirteen cases (12.5%) reported recurrence of the urine loss under stress and these constituted the failure group. The average number of pads diminished from 3.3 (+/- 0.8) to 0.2 (+/- 0.2) and from 3.2 (+/- 0.7) to 0.6 (+/- 0.5) after the surgery, for the fascial and vaginal sling operations respectively. Return to daily activities occurred after 9.3 days (+/- 1.2, max: 33, min: 2) for the fascial slings and 5.3 days (+/- 0.2, max: 17, min: 2) in the vaginal group. Surgical complications were compared between the groups. Time to urethral voiding varied according to expertise, demonstrating a diminishing tendency after the initial 20 cases. Female obstruction was observed in 11.1% of the fascial slings and 8.6% after vaginal approach, but none in the vaginal group required urethrolysis. Looking individually, the FS group migrated to the worse results while the VWS group started to lose the efficiency after 6 months. CONCLUSIONS: Sling operations are a safe and efficacious option to treat SUI, however, the results can vary according to the technique employed. Shorter efficacy and fewer complications are observed in vaginal wall sling operations, while durable results, but with a higher rate of voiding dysfunctions compromising the long-term clinical satisfaction may be observed after excessive urethral suspensions, as in fascial sling suspension.

A randomized and prospective study on the value of antibiotic prophylaxis administration in transurethral resection of the prostate.

CONTEXT: Antibiotic prophylaxis in transurethral resection of the prostate is a regular practice in urology. However, its prophylactic effect can be questioned when the antiseptic surgical technique is used. Nonetheless, urine culture-oriented antibiotic therapy is the gold standard for avoiding improper medication usage and bacterial resistance. OBJECTIVE: To study the efficacy of antibiotic usage in patients with negative urine cultures, who were submitted to transurethral resection of the prostate. TYPE OF STUDY: Prospective open labeled study. SETTING: Tertiary care referral hospital. PARTICIPANTS: 124 consecutive patients, who were randomly divided into two groups to receive antibiotic prophylaxis or not. MAIN MEASUREMENTS: Cultures from meatus, urine, irrigation and antiseptic fluid, and prostate tissue chips, were compared and analyzed for bacterial sensitivity to the antibiotic used, according to the surgeon's personal criteria. McLennan's test was used for statistical analysis. RESULTS: No statistically significant difference regarding clinical evolution was found between the groups that received or antibiotics or not. Statistical significance was found regarding the occurrence of positive urine cultures during the postoperative period for those not receiving antibiotics, but not in relation to fever, prostate chip culture or bacteremic episodes. Sixty-eight subjects (57.1%) presented positive prostatic tissue culture. There was no specific correlation between the recovered bacteria from the meatus, prostatic tissue chip and urine and the spectrum of the administered antibiotic. Six cases showed the same bacteria in the urine and prostatic tissue chip. Only fifteen cases (25%) in the antibiotic group showed the desired sensitivity directed to the collected bacteria. CONCLUSIONS: Antibiotic prophylaxis for patients whose urine is sterile is debatable in patients who are candidates for transurethral resection of the prostate. Most of the time, the antibiotic agent used is not specific for any of the bacteria recovered from the various sources analyzed.

International prostate symptom score - IPSS - AUA as discriminat scale in 400 male patients with lower urinary tract symptoms (LUTS)

OBJECTIVE: This study analyzed the total symptom score, irritative and obstructive domains of IPSS questions regarding quality of life and the urodynamic diagnosis in 400 men with LUTS. MATERIALS AND METHODS: Four hundred consecutive male patients were prospectively enrolled after being submitted to full urodynamic evaluation and IPSS. Obstructed and non-obstructed patients were compared regarding the symptoms score and quality of life. Results were assessed through Wilcox, ANOVA and Student-t tests. RESULTS: 80.2 percent were diagnosed as urodynamically obstructed of which 42.4 percent presented detrusor instability in the filling phase. In obstructed patients there were no statistical difference concerning obstructive or irritative questions from IPSS (p = 0.50). It was not possible either to predict which patients presented detrusor instability based on the questionnaire (p = 0.65). Out of seventy-nine cases unobstructed (19.8 percent), 65.4 percent revealed detrusor instability. These cases could not be distinguished from all obstructed men based on the clinical questions measured by IPSS (p = 0.87). Obstructive and irritative questions did not present different indexes than obstructed cases (p = 0.63). Subjective quality of life index did not discriminate obstruction nor it could predict detrusor instability in both groups. CONCLUSION: Clinical symptoms and quality of life index measured by the IPSS as well as its obstructive and irritative domains do not have discriminating power to predict the presence of infravesical obstruction in males with LUTS, demanding objective tools to demonstrate obstruction.

A randomized and prospective study on the value of antibiotic prophylaxis administration in transurethral resection of the prostate

CONTEXTO: A profilaxia antibiótica nas ressecções transuretrais da próstata é uma prática regular e freqüente na clínica urológica. No entanto, seu efeito profilático e bactericida protetor pode ser contestado se procedimentos assépticos são utilizados na realização da cirurgia, sobretudo em pacientes com urina estéril. No caso de infecção urinária, a identificação dos germes para escolha do antibiótico adequado pode ser necessária. OBJETIVO: Verificar a eficácia da antibioticoprofilaxia em pacientes com urina estéril submetidos a ressecção transuretral de próstata. TIPO DE ESTUDO: Prospectivo num centro de referência de tratamento urológico, aberto. LOCAL: Hospital de referência terciária. PARTICIPANTES: 124 pacientes. VARIÁVEIS ESTUDADAS: 124 pacientes consecutivos foram randomicamente divididos em dois grupos para receber ou não antibioticoterapia profilática na ressecção transuretral de próstata. Cultura do meato uretral, urina, líquido irrigante e anti-séptico, além dos fragmentos de próstata ressecados foram analisados quanto a sensibilidade a antibióticos, escolhidos a critério do cirurgião, e determinada a partir de antibiograma com as cepas bacterianas identificadas nos sítios mencionados. RESULTADOS: Não se encontrou diferença estatisticamente significante na evolução clínica de ambos os grupos. Aqueles que receberam antibioticoprofilaxia apresentaram menor freqüência de cultura urinária positiva do que aqueles que não receberam profilaxia. No entanto, na observação da evolução clínica de ambos os grupos, o uso de antibiótico não mostrou qualquer benefício no que concerne à ocorrência de febre, positividade das culturas obtidas dos fragmentos de próstata ressecados ou episódios de bacteremia. 68 casos (57,1%) apresentaram cultura positiva do tecido prostático. Entretanto, não houve correlação entre a bactéria identificada a partir do tecido prostático e de outros locais, tais como meato, urina, líquido irrigante ou anti-séptico utilizado. Somente em seis casos foi encontrada a mesma bactéria no tecido prostático e na urina pós-operatória. Apenas em 15 casos (25%) do grupo antibiótico observou-se a sensibilidade esperada da bactéria identificada ao antibiótico utilizado...

International Prostate Symptom Score--IPSS-AUA as discriminat scale in 400 male patients with lower urinary tract symptoms (LUTS).

OBJECTIVE: This study analyzed the total symptom score, irritative and obstructive domains of IPSS questions regarding quality of life and the urodynamic diagnosis in 400 men with LUTS. MATERIALS AND METHODS: Four hundred consecutive male patients were prospectively enrolled after being submitted to full urodynamic evaluation and IPSS. Obstructed and non-obstructed patients were compared regarding the symptoms score and quality of life. Results were assessed through Wilcox, ANOVA and Student-t tests. RESULTS: 80.2% were diagnosed as urodynamically obstructed of which 42.4% presented detrusor instability in the filling phase. In obstructed patients there were no statistical difference concerning obstructive or irritative questions from IPSS (p = 0.50). It was not possible either to predict which patients presented detrusor instability based on the questionnaire (p = 0.65). Out of seventy-nine cases unobstructed (19.8%), 65.4% revealed detrusor instability. These cases could not be distinguished from all obstructed men based on the clinical questions measured by IPSS (p = 0.87). Obstructive and irritative questions did not present different indexes than obstructed cases (p = 0.63). Subjective quality of life index did not discriminate obstruction nor it could predict detrusor instability in both groups. CONCLUSION: Clinical symptoms and quality of life index measured by the IPSS as well as its obstructive and irritative domains do not have discriminating power to predict the presence of infravesical obstruction in males with LUTS, demanding objective tools to demonstrate obstruction.

Segurança e racionalidade para o uso de sildenafil (viagra) no tratamento das disfunções eréteis / Erectile dysfunction

O tratamento da disfunção sexual mudou dramaticamente após a incorporação do sildenafil na prática clínica. Na era pré-sildenafil as alternativas terapêuticas compreendiam recursos não-cirúrgicos (medicamentos, dispositivo de vácuo e elásticos penianos) e cirúrgicos, com resultados clínicos apenas moderado e com a indesejável baixa aderência ao tratamento. O uso de medicamento por via oral mudou dramaticamente tornando-se atrativo pela maior aderência com mínimos efeitos colaterais. Entretanto, pela ocorrência histórica de derivar de uma droga inicialmente pesquisada para coronariopatia, associada ao forte apelo popular da sexualidade embutida no contexto do fármaco, observou-se sentimento visceral de refuta ao medicamento, por se associar à mortes. Entretanto, seis anos após seu amplo uso clínico, verifica-se que a relação causa-efeito não parece tão evidente, observando-se até mesmo benefício clínico, nos pacientes com doença cárdio-vascular. A presente revisão pretende dar uma visão global e atual do uso do fármaco à luz das evidências científicas

Localized prostatic cancer in patients submitted to renal transplant.

OBJECTIVE: An attempt is made to evaluate the incidence of prostate cancer in patients who have previously undergone a kidney transplant surgery and to determine the best therapeutic approach to this target group. MATERIAL AND METHODS: All kidney transplant male patients over 40 years of age were studied with respect to diseases unrelated to the transplants, which later affected them, mainly focusing on neoplastic disease and, more specifically, prostate cancer. RESULTS: Of 397 kidney-transplanted patients, 146 (37%) were males, at least 40 years old. Among the 10 of them (6.8%) who developed neoplastic diseases, there were two cases (1.4%) of prostatic cancer. Both were treated with a radical retropubic prostatectomy with no technical difficulty, in spite of the presence of a graft in one of the iliac fossa. CONCLUSIONS: Prostate cancer incidence in kidney transplant patients is still low (1.8%), but it will certainly heighten as transplants are performed in increasingly older people and as better immunosuppressive drugs are introduced to lengthen the survival of grafts and patients. Because these cancers are expected to be more aggressive as a consequence of continuous immunosuppression, early diagnosis is of critical importance, and those patients should be made aware of the need for frequent screening for prostate cancer.

Avaliaçäo do conteúdo de DNA em câncer da próstata: comparaçäo entre biópsias por agulha e espécimes cirúrgicos correspondentes / DNA content in prostatic carcinoma: a comparison of needle biopsy and subsequent prostatectomy specimens

Introduçao: O padrao de ploidia é considerado fator prognóstico importante em diversos tumores sólidos e no câncer da próstata. Para que este parâmetro possa ser utilizado na definiçao da estratégia terapêutica, especialmente em pacientes candidatos a prostatectomia radical, é necessário que os resultados obtidos nas biópsias diagnósticas representem adequadamente os espécimes cirúrgicos definitivos. Entretanto, é freqüente que um mesmo tumor possua áreas com diferentes padroes de ploidia, fato que poderia interferir nos resultados obtidos na determinaçao do conteúdo de DNA. Nosso objetivo foi avaliar se a determinaçao do padrao de ploidia na biopsia prostática diagnóstica representa adequadamente os achados do espécime cirúrgico correspondente. Método: Utilizou-se a citometria por análise da imagem digitalizada (CIM) para avaliar retrospectivamente o conteúdo de DNA de fragmentos de tecido prostático provenientes das biópsias diagnósticas por agulha e espécimes cirúrgicos correspondentes, em amostras de 31 pacientes portadores de adenocarcinoma da próstata estadio T3b N0 M0 ou inferior, submetidos a prostatectomia radical e sem tratamento hormonal ou radioterápico anterior. Resultados: A análise das amostras provenientes das biópsias permitiu prever em 80,6 por cento dos casos o padrao de ploidia das amostras correspondentes nos espécimes cirúrgicos. Conclusao: A determinaçao do padrao de ploidia em amostras dos fragmentos de biópsia, utilizando-se a CIM, representou adequadamente o padrao do conteúdo de DNA do espécime cirúrgico correspondente

Estudo do DNA na previsäo de resposta à quimioterapia por M-VAC em câncer infiltrativo de bexiga / DNA ploidy as a possible predictor of response to M-VAC chemotherapy for locally invasive bladder cancer

Em 20 pacientes com CCTB localmente infiltrativo realizou-se pesquisa do conteúdo do DNA em amostras de tumores obtidos por ressecçäo ou biópsia endoscópica, para avaliar a possibilidade de previsäo de resposta àquimioterapia por M-VAC. Histologicamente, 30 por cento dos tumores eram diferenciados e 70 por cento pouco diferenciados. Os tumores eram diplóides em 5 por cento, tetraplóides em 5 por cento e aneuplóide em 90 por cento. Observou-se resposta completa à quimioterapia em 55 por cento e resposta negativa em 45 por cento dos casos. A avaliaçäo da haploidia do DNA näo contribuiu para a detecçäo de neoplasias responsivas ao esquema M-VAC

Adenocarcinoma de prostata: estudo do acido desoxirribonucleico e a sobrevida do paciente / Adenocarcinoma of prostate: deoxyribonucleic acid study and patient survival

Estudou-se o conteudo de acido desoxirribonucleico (DNA) por citometria digital em amostras obtidas por punçao aspirativa, de 52 pacientes com adenocarcinoma de prostata,e o seu achado foi correlacionado com a sobrevida dos pacientes. O tumor era diploide em 13,4 por cento das amostras e aneuploide em 84,6 por cento. O percentual de mortalidade dos pacientes com tumores aneuploides foi 52,2 por cento e 0 por cento nos diploides. Os autores concluiram que os tumores aneuploides da prostata estiveram associados a prognostico pior e com indice de mortalidade significativamente maior do que os diploides, fazendo ressalva ao tempo relativamente curto de observaçao

Estudo do perfil do acido desoxirribonucleico por citometria digital no cancer da prostata / DNA profile study by digital cytomatry in prostatic cancer

Em 52 pacientes com adenocarcinoma de prostata realizou-se estudo do DNA por citometria digital em amostras obtidas por punçao aspirativa. O tumor era diploide em 13,4//das amostras e aneuploide em 84,6//. Histologicamente, 21,3//dos tumores eram bem diferenciados, 46,1//eram moderadamente diferenciados e 32,6//eram pouco diferenciados. O tumor era estadio B em 25//, C em 13,4//e D em 61,6//dos pacientes. Neoplasias aneuploides foram mais frequentes no grupo de tumores histologicamente pouco diferenciados e no de estadio avançado. Todos os tumores diploides apresentaram-se em estadio localizado B. A amostra por punçao aspirativa com agulha fina de raqui-anestesia foi adequada para o estudo do DNA.

Coledocofibroscopia percutânea no tratamento da litiase residual dos ductos biliares / Percutaneous choledochofiberoscopy as treatment of retained common bile duct stones

Os autores relatam quatro casos de pacientes portadores de litiase residual do hepatocoledoco, nos quais foi utilizada com sucesso a coledocofibroscopia percutanea atraves do trajeto do dreno de Kehr, como alternativa terapeutica