RESUMEN
Elective surgical procedures are often delayed for up to six months in patients who have suffered a myocardial infarction (MI) because of the substantial risk of re-infarction and high peri-operative mortality. The optimal management of patients who have sustained a recent myocardial infarction and who require an emergency abdominal operation, however, has yet to be defined. The use of an intraaortic balloon pump (IABP) may play a role in such patients by improving the function of the injured heart. Three cases are presented in which IABP was used in patients who had recently sustained a myocardial infarction and who required emergency abdominal surgery. A review of the literature is presented and the application of IABP in such circumstances is discussed. Although clinical experience is limited, the use of the IABP may be useful in selected patients who have sustained a recent MI and who require emergency surgery.
Asunto(s)
Contrapulsador Intraaórtico , Infarto del Miocardio/cirugía , Anciano , Servicios Médicos de Urgencia , Resultado Fatal , Humanos , Masculino , Persona de Mediana EdadRESUMEN
Axillary lymph node status is the most important prognostic factor in breast cancer patients and is currently determined by surgical dissection. This study was performed to assess whether dynamic gadopentetate dimeglumine (Gd) enhanced MRI is an accurate method for non-invasive staging of the axilla. 47 women with a new primary breast cancer underwent pre-operative dynamic Gd enhanced MRI of the ipsilateral axilla. Lymph node enhancement was quantitatively analysed using a region of interest method. Enhancement indices and nodal area were compared with histopathology of excised nodes using a receiver operating characteristic (ROC) curve approach. 10 patients had axillary metastases pathologically and all had > or =1 lymph node with an enhancement index of >21% and a nodal area of >0.4 cm(2). 37 patients had negative axillary nodes pathologically. 20 of these had enhancement indices <21% and nodal areas <0.4 cm(2). Using this method, a sensitivity of 100%, a specificity of 56%, a positive predictive value of 38% and a negative predictive value of 100% could be achieved. Using this method of quantitative assessment, dynamic Gd enhanced MRI may be a reliable method of predicting absence of axillary nodal metastases in women with breast cancer, thereby avoiding axillary surgery in women with a negative MRI study.
Asunto(s)
Neoplasias de la Mama/patología , Carcinoma/diagnóstico , Carcinoma/secundario , Imagen por Resonancia Magnética/métodos , Anciano , Anciano de 80 o más Años , Axila , Medios de Contraste , Femenino , Gadolinio DTPA , Humanos , Metástasis Linfática/diagnóstico , Metástasis Linfática/patología , Persona de Mediana Edad , Estadificación de Neoplasias , Valor Predictivo de las Pruebas , Curva ROC , Sensibilidad y EspecificidadRESUMEN
BACKGROUND: After breast conservation surgery for breast cancer, patients are followed up by regular clinical examination and mammography, at intervals which vary according to local practice. However, the optimum interval remains unclear with current guidelines suggesting mammography should be carried out every 1 to 2 years. This study has investigated this aspect and, in particular, whether mammography or clinical examination or both allowed an early detection of recurrence of the disease in the conserved breast. METHODS: A total of 695 patients who had undergone breast conservation surgery were identified from a database of prospectively recorded data during the period 1990 to 1995. Clinical examination and annual mammography were performed in accordance with local protocol. The results of clinical examination, mammography, and local recurrence rates were evaluated. RESULTS: A total of 2,181 mammograms were undertaken in the 695 patients studied. Local recurrence of disease in the conserved breast occurred in 21 patients (3%), at a mean follow-up of 3.5 years. The first identification of tumor recurrence was by clinical examination in 11 patients with local recurrence, and by the surveillance mammography in the other 10 patients with local recurrence. Overall, mammography detected the local recurrence in 13 of 20 (65%) patients who underwent this examination. In the other patients, the recurrence was detected on clinical examination only. In addition, in 52 patients, mammography was falsely positive, giving a false positive rate of 2.3%. Contralateral cancers in the opposite breast were detected in 2 patients. CONCLUSIONS: The detection of local disease after breast conservation surgery requires both clinical examination and mammography. In the context of our follow-up policy, in 52% of patients with local recurrence, this was first identified by clinical examination. Disease recurrence was identified in the other 48% of patients by mammographic surveillance. Overall, mammography will identify or confirm local recurrence in two thirds of women. However, in a small number of cases (2.3% in our series) mammography will give false positive results. New imaging modalities to assist in the diagnosis of local recurrence of disease after breast conservation surgery are required.
Asunto(s)
Neoplasias de la Mama/cirugía , Mamografía , Mastectomía Segmentaria , Recurrencia Local de Neoplasia/diagnóstico por imagen , Adulto , Anciano , Reacciones Falso Positivas , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Estudios ProspectivosRESUMEN
PURPOSE: To determine whether [(18)F]-fluorodeoxy-D-glucose ([(18)F]-FDG) positron emission tomography (PET) can predict the pathologic response of primary and metastatic breast cancer to chemotherapy. PATIENTS AND METHODS: Thirty patients with noninflammatory, large (> 3 cm), or locally advanced breast cancers received eight doses of primary chemotherapy. Dynamic PET imaging was performed immediately before the first, second, and fifth doses and after the last dose of treatment. Primary tumors and involved axillary lymph nodes were identified, and the [(18)F]-FDG uptake values were calculated (expressed as semiquantitative dose uptake ratio [DUR] and influx constant [K]). Pathologic response was determined after chemotherapy by evaluation of surgical resection specimens. RESULTS: Thirty-one primary breast lesions were identified. The mean pretreatment DUR values of the eight lesions that achieved a complete microscopic pathologic response were significantly (P =.037) higher than those from less responsive lesions. The mean reduction in DUR after the first pulse of chemotherapy was significantly greater in lesions that achieved a partial (P =.013), complete macroscopic (P =.003), or complete microscopic (P =.001) pathologic response. PET after a single pulse of chemotherapy was able to predict complete pathologic response with a sensitivity of 90% and a specificity of 74%. Eleven patients had pathologic evidence of lymph node metastases. Mean pretreatment DUR values in the metastatic lesions that responded did not differ significantly from those that failed to respond (P =.076). However, mean pretreatment K values were significantly higher in ultimately responsive cancers (P =.037). The mean change in DUR and K after the first pulse of chemotherapy was significantly greater in responding lesions (DUR, P =.038; K, P =.012). CONCLUSION: [(18)F]-FDG PET imaging of primary and metastatic breast cancer after a single pulse of chemotherapy may be of value in the prediction of pathologic treatment response.
Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/tratamiento farmacológico , Fluorodesoxiglucosa F18 , Radiofármacos , Taxoides , Tomografía Computarizada de Emisión , Adulto , Anciano , Antineoplásicos Fitogénicos/uso terapéutico , Axila , Biopsia , Neoplasias de la Mama/patología , Ciclofosfamida/administración & dosificación , Docetaxel , Doxorrubicina/administración & dosificación , Femenino , Humanos , Ganglios Linfáticos/patología , Metástasis Linfática , Persona de Mediana Edad , Paclitaxel/análogos & derivados , Paclitaxel/uso terapéutico , Prednisolona/administración & dosificación , Sensibilidad y Especificidad , Vincristina/administración & dosificaciónRESUMEN
UNLABELLED: To minimise delay in diagnosis and reduce patient anxiety, triple assessment with immediate reporting has been used in our symptomatic breast clinic since 1991. This article examines the accuracy of the diagnostic modalities used and the efficacy of the "one-stop" diagnostic policy. The data on 1,110 new patients presenting to the symptomatic breast clinic between January and July 1993, were analysed and subsequent three year follow-up and outcome established. Fine needle aspiration cytology (FNAC) gave the highest predictive value (97.3%) with a sensitivity of 93.5% and a specificity of 98.1%. Ultrasonography provided a 97.0% prediction with a sensitivity of 88.9% and a specificity of 97.4%, whereas mammography had a prediction of 96.4% with sensitivity of 93.2% and a specificity of 96.7%. When the mammogram or ultrasound scan were reported as unequivocally benign (M1), there were no missed cancers. The false positive and false negative rates for FNAC were 0% and 1.4%, respectively. Following assessment, a diagnosis was made in 96% of patients. Sixty-two percent of the patients were discharged at the first clinic visit. Four breast malignancies were subsequently diagnosed in the discharged group; two with new microcalcifications due to ductal carcinoma in situ, one with invasive disease in a different quadrant of the breast from that originally investigated, and in one patient the cancer was missed. CONCLUSION: A "one-stop" symptomatic breast clinic provides an accurate and effective means of establishing a correct diagnosis.
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Enfermedades de la Mama/diagnóstico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Instituciones de Atención Ambulatoria , Biopsia con Aguja , Enfermedades de la Mama/diagnóstico por imagen , Enfermedades de la Mama/patología , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/diagnóstico por imagen , Carcinoma in Situ/diagnóstico por imagen , Carcinoma Ductal de Mama/diagnóstico por imagen , Errores Diagnósticos , Femenino , Estudios de Seguimiento , Humanos , Mamografía , Persona de Mediana Edad , Sensibilidad y Especificidad , UltrasonografíaRESUMEN
The diagnosis and treatment of breast cancer are stressful, and stress may be associated with a poorer response to chemotherapy. There is a need, therefore, to develop and evaluate interventions that might enhance quality of life and, possibly, improve treatment response. The effects of relaxation combined with guided imagery (visualizing host defences destroying tumour cells) on quality of life and response to primary chemotherapy, to date, have not been adequately evaluated. Ninety-six women with newly diagnosed large or locally advanced breast cancer (T2 > 4 cm, T3, T4, or TxN2 and M0) took part in a prospective, randomized controlled trial. Patients were randomized following diagnosis to a control condition (standard care) or to the experimental condition (standard care plus relaxation training and imagery). Psychometric tests to evaluate mood and quality of life were carried out before each of the six cycles of chemotherapy and 3 weeks after cycle 6: tests of personality and coping strategy were carried out prior to cycles one and six. Clinical response to chemotherapy was evaluated after six cycles of chemotherapy using standard UICC criteria and pathological response was assessed from the tissue removed at surgery. As hypothesized, patients in the experimental group were more relaxed and easy going during the study (Mood Rating Scale). Quality of life was better in the experimental group (Global Self-assessment and Rotterdam Symptom Checklist). The intervention also reduced emotional suppression (Courtauld Emotional Control Scale). The incidence of clinically significant mood disturbance was very low and the incidence in the two groups was similar. Finally, although the groups did not differ for clinical or pathological response to chemotherapy, imagery ratings were correlated with clinical response. These simple, inexpensive and beneficial interventions should be offered to patients wishing to improve quality of life during primary chemotherapy.
Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Neoplasias de la Mama/psicología , Quimioterapia/métodos , Imágenes en Psicoterapia , Terapia por Relajación , Estrés Psicológico/prevención & control , Neoplasias de la Mama/tratamiento farmacológico , Quimioterapia/psicología , Femenino , Humanos , Persona de Mediana Edad , Estudios Prospectivos , Psicometría , Calidad de VidaRESUMEN
This study evaluated the possible value of psychological variables in predicting clinical and pathological response to primary chemotherapy. 96 women with newly diagnosed large, or locally advanced, breast cancer (T2 > 4 cm, T3, T4, N2 and M0) participated in a prospective, randomised trial to evaluate the effects of relaxation training with guided imagery and L-arginine on response to primary chemotherapy. Before the first of six cycles of primary chemotherapy, women were assessed using the Hospital Anxiety and Depression Scale (HADS) and the Eysenck Personality Questionnaire (EPQ). The primary outcomes were clinical response (evaluated using standard International Union Against Cancer (UICC) criteria) and pathological response (graded by means of a previously published 5-point scale) following primary chemotherapy. Stepwise linear regressions were used to estimate the predictive value of age, menopausal status, clinical nodal status, tumour size at diagnosis, oestrogen receptor status, dietary supplementation (L-arginine versus placebo), personality (EPQ-L scores), mood (HADS scores) and a psychological intervention. HADS depression score was a significant independent predictor of pathological response to chemotherapy. HADS anxiety score was a significant independent predictor of clinical response. Because the original tumour size before chemotherapy (also a significant predictor of clinical and pathological responses) was taken into account in the analyses, the results cannot be explained in terms of psychobiological factors related to tumour size. This study supports the importance of psychological factors as independent predictors of response to primary chemotherapy in patients with breast cancer. If they can be replicated, these findings have major implications for the management of women with breast cancer. Psychological factors need to be assessed and evaluated in future trials of chemotherapy.
Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/psicología , Neoplasias de la Mama/terapia , Imágenes en Psicoterapia/métodos , Terapia por Relajación , Adulto , Anciano , Ansiedad/etiología , Depresión/etiología , Femenino , Humanos , Mastectomía/métodos , Persona de Mediana Edad , Estudios Prospectivos , Escalas de Valoración Psiquiátrica , Resultado del TratamientoRESUMEN
OBJECTIVE: To evaluate the ability of positron emission tomography (PET) with 18F-fluoro-2-deoxy-D-glucose (18F-FDG) to determine noninvasively axillary lymph node status in patients with breast cancer. BACKGROUND: The presence of axillary lymph node metastasis is the most important prognostic factor in women with breast cancer. It signifies the presence of occult metastatic disease and indicates the need for adjuvant therapy. The only reliable way in which this important prognostic information may be obtained is by performing axillary dissection, which may be associated with significant complications and delay in discharge from the hospital. PET with 18F-FDG can visualize primary cancers in the breast and metastatic tumor deposits. METHODS: Fifty patients with untreated breast cancer had clinical examination of their axilla performed (graded as positive or negative), followed by PET of the axilla and midthorax. PET data were analyzed blindly and graded as positive or negative, depending on the presence or absence of axillary nodal metastases. Cytopathologic assessment of the axillary nodes was carried out within 1 week of PET, by fine-needle aspiration cytology in 5 patients and axillary dissection in 45; the excised specimens were examined by a single pathologist. RESULTS: The overall sensitivity of PET in 50 patients was 90% and the specificity was 97%. Clinical examination of the same patients had an overall sensitivity of 57% and a specificity of 90%. In the 24 patients with locally advanced breast cancer (T3, T4, TxN2), PET had a sensitivity of 93% and a specificity of 100%. In T1 tumors (seven patients), the sensitivity and specificity were 100%. PET had a high predictive value (>90%) and accuracy (94%) in staging the axilla. CONCLUSIONS: PET is a sensitive and specific method of staging the axilla in patients with breast cancer. It may obviate the need for axillary surgery in women with small primary tumors, define the women likely to benefit from axillary dissection, or allow radiotherapy to be substituted for surgery, particularly in post-menopausal women.
Asunto(s)
Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/patología , Fluorodesoxiglucosa F18 , Metástasis Linfática/diagnóstico por imagen , Radiofármacos , Tomografía Computarizada de Emisión , Adulto , Anciano , Anciano de 80 o más Años , Axila , Femenino , Humanos , Persona de Mediana Edad , Estadificación de Neoplasias , Valor Predictivo de las Pruebas , Sensibilidad y Especificidad , Tomografía Computarizada de Emisión/métodosRESUMEN
BACKGROUND: Neoadjuvant (primary) chemotherapy is being used increasingly in the treatment of patients with large and locally advanced breast cancer with the aim of reducing the size of the primary tumor and eliminating micrometastatic disease. Response rates to, compliance with, and survival of patients following neoadjuvant chemotherapy have been variable. We report the results of a consecutive series of 77 patients with breast cancer who received neoadjuvant chemotherapy. METHODS: Seventy-seven patients with locally advanced breast cancers were treated with multimodality therapy comprising up to six cycles of chemotherapy (cyclophosphamide, vincristine, doxorubicin, and prednisolone), radiotherapy, and then surgery. The median follow-up was 54 months. Clinical response rates to therapy and overall survival have been documented. In addition, prognostic factors for survival were identified using the Cox proportional hazards model. RESULTS: The overall objective response rate of the primary tumor to chemotherapy alone was 87% (25% complete and 62% partial responses, UICC criteria). Following radiotherapy the response rate was 90% (52% complete and 38% partial responses). The overall 5-year survival for all patients was 0.48. However, the probability of survival at 5 years was 0.74 in those with a complete response, and 0.36 if there was a partial clinical response, but no patients who had either stasis of disease or progression survived for 5 years. Independent predictors of better survival that were identified were a complete histopathological response after chemotherapy and radiotherapy, a complete clinical response to chemotherapy, and five or six cycles of chemotherapy versus four or less. CONCLUSIONS: Neoadjuvant chemotherapy in patients with large and locally advanced breast cancers can result in satisfactory local control and overall survival rates, especially in patients with a complete clinical or histopathological response after treatment.
Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/patología , Neoplasias de la Mama/radioterapia , Neoplasias de la Mama/cirugía , Terapia Combinada , Femenino , Humanos , Persona de Mediana Edad , Estadificación de Neoplasias , Pronóstico , Modelos de Riesgos Proporcionales , Análisis de SupervivenciaRESUMEN
Patients with large primary breast cancers are being treated with neo-adjuvant chemotherapy. Studies in animals have shown that responses to chemotherapy can be increased by dietary manipulation of tumour cell metabolism. Also dietary supplementation with the amino acid L-arginine, resulted in an increase in tumour metabolic activity expression of the nuclear activation antigen, Ki67, in patients with breast cancer. Therefore, we have carried out a randomised, double blind, placebo controlled trial to determine if L-arginine supplementation is beneficial in patients with breast cancer, undergoing neo-adjuvant chemotherapy. 96 patients were randomised to receive L-arginine (30 g/day) for three days (n = 48) or placebo (n = 48) prior to undergoing chemotherapy (doxorubicin, cyclophosphamide, vincristine, prednisolone), 6 pulses at 21-day intervals. Clinical and pathological responses were assessed in both groups of patients following completion of chemotherapy. The clinical response rate was 77% (23% complete and 54% partial responses) in the L-arginine treated group, compared with 71% (15% complete and 56% partial) in the placebo group of patients (p = ns). However, in patients with tumours less than 6 cm in initial diameter, there was a significant increase in the better histopathological responses in the L-arginine group, when compared with the placebo group of patients (88% vs 52%, p = 0.04). This may have important implications for clinical practice.
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Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Arginina/administración & dosificación , Neoplasias de la Mama/tratamiento farmacológico , Ciclofosfamida/uso terapéutico , Doxorrubicina/uso terapéutico , Prednisona/uso terapéutico , Vincristina/uso terapéutico , Adenocarcinoma/tratamiento farmacológico , Adenocarcinoma/metabolismo , Adenocarcinoma/patología , Adulto , Anciano , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/patología , Carcinoma Ductal de Mama/tratamiento farmacológico , Carcinoma Ductal de Mama/metabolismo , Carcinoma Ductal de Mama/patología , Carcinoma Lobular/tratamiento farmacológico , Carcinoma Lobular/metabolismo , Carcinoma Lobular/patología , Suplementos Dietéticos , Método Doble Ciego , Sinergismo Farmacológico , Femenino , Humanos , Mastectomía , Persona de Mediana Edad , Terapia Neoadyuvante , Estadificación de Neoplasias , Radioterapia AdyuvanteAsunto(s)
Hidrocarburo de Aril Hidroxilasas , Citocromo P-450 CYP1A1/biosíntesis , Sistema Enzimático del Citocromo P-450/biosíntesis , Citocromo P-450 CYP1A1/análisis , Citocromo P-450 CYP1B1 , Sistema Enzimático del Citocromo P-450/análisis , Femenino , Expresión Génica , Humanos , Immunoblotting , Familia de Multigenes , Reacción en Cadena de la Polimerasa/métodos , ARN Mensajero/análisisRESUMEN
The diagnostic accuracy of clinical examination, mammography, ultrasonography and fine needle aspiration (FNA) cytology in discriminating between benign and malignant breast lesions has been retrospectively assessed in 603 patients who attended the Professorial Breast Clinic and then underwent surgical biopsy, in Aberdeen Royal Infirmary, between January 1989 and September 1992. In this series of patients, FNA cytology gave the highest overall prediction of malignancy (92.6%) with a sensitivity of 87% and a specificity of 98%, whilst ultrasonography gave the lowest correct overall prediction (75.6%), with a sensitivity of 70% and a specificity of 79%. Using all the available findings (clinical examination, mammography, ultrasonography, FNA) as well as the patients' age, a stepwise logistic discriminant analysis was used to derive a mathematical equation for use as a novel diagnostic index. Weighted scores, derived from each variable, were used in the discriminant equation to predict the likelihood of malignancy in patients of different ages (>90%). For young patients (<35 years) the discriminant analysis predicted the diagnosis in 98% of women correctly. Quadruple assessment provides an opportunity for establishing the likely diagnosis in most patients the same day they visit the Breast Clinic. The diagnostic index, currently being evaluated prospectively in our breast clinic, may be a further aid to establishing a correct diagnosis.
Asunto(s)
Neoplasias de la Mama/diagnóstico , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/prevención & control , Análisis Discriminante , Femenino , Humanos , Persona de Mediana Edad , Servicio Ambulatorio en Hospital , Valor Predictivo de las Pruebas , Estudios Retrospectivos , Sensibilidad y EspecificidadRESUMEN
The expression of CYP1B1 has been identified in breast cancer using the reverse transcriptase-polymerase chain reaction and immunoblotting. CYP1B1 mRNA was expressed in the majority of breast tumours and immunoblotting of breast tumours identified a single protein band of molecular weight 60 kDa corresponding to the predicted molecular weight of human CYP1B1. This is the first study to identify CYP1B1 expression in a tumour where it may represent a previously unknown pathway for the metabolism of oestradiol and chemotherapeutic drugs.
Asunto(s)
Hidrocarburo de Aril Hidroxilasas , Neoplasias de la Mama/enzimología , Sistema Enzimático del Citocromo P-450/biosíntesis , Adulto , Anciano , Anciano de 80 o más Años , Secuencia de Bases , Neoplasias de la Mama/patología , Citocromo P-450 CYP1B1 , Sistema Enzimático del Citocromo P-450/genética , Cartilla de ADN , Femenino , Humanos , Immunoblotting , Persona de Mediana Edad , Datos de Secuencia Molecular , Reacción en Cadena de la Polimerasa , ARN Mensajero/metabolismo , Transcripción GenéticaRESUMEN
BACKGROUND: Surgical procedures suppress host antitumor defense mechanisms, which may increase the risk of metastatic tumor dissemination. We have evaluated the effects of the biologic response modifier polyadenylic-polyuridylic acid (PAPU) on natural cytotoxicity in patients with breast cancer undergoing operation. METHODS: PAPU (150 mg) or placebo was given intravenously during the perioperative period (preoperative, days -1 and 0; postoperative, days 1, 3, 5, 7, and 14). The function (chromium release assay) and number (flow cytometry) of natural killer (NK) cells were measured before operation (days -2 and -1), on the day of operation (day 0), and after operation (days 1, 2, 4, 6, and 18). RESULTS: Surgical procedures suppressed NK cell cytotoxicity in the placebo group on postoperative days 1 (p < 0.001), 4, 6, and 18 (p < 0.05), whereas inhibition on postoperative day 2 failed to reach significance. PAPU abolished this immunosuppression after operation. The NK cell activity was elevated when compared with the control group; it was significant (p < 0.05) on postoperative days 1, 2, 4, 6, and 18. Surgical procedures also reduced circulating NK cell numbers during the first postoperative week in the placebo group; the decrease was statistically significant on day 4. The decrease in NK cell numbers in the PAPU group was insignificant. CONCLUSIONS: PAPU prevented the decrease in the circulating number and cytotoxic activity of NK cells that occurred after operation and enhanced NK cell cytotoxicity. This may have important implications for patients with cancer undergoing major operation.
Asunto(s)
Neoplasias de la Mama/cirugía , Citotoxicidad Inmunológica/efectos de los fármacos , Células Asesinas Naturales/inmunología , Mastectomía , Poli A-U/farmacología , Adulto , Anciano , Neoplasias de la Mama/inmunología , Método Doble Ciego , Femenino , Humanos , Inmunofenotipificación , Persona de Mediana Edad , Receptores de IgG/análisisRESUMEN
All the 638 new hospital cases of abdominal aortic aneurysm (AAA) diagnosed in the Grampian region of Scotland, over the 12-year period between January 1980 and December 1991, were studied. Information was obtained from the Scottish Morbidity Record Form 1 (SMR1). The number of AAA cases has risen from 19 in 1980 to 84 in 1991 totalling 638 cases in the 12-year study period. Of these, 29% were women, a percentage which remained fairly constant for each year of the study. The mean age of the study population was 73.8 years; higher in women (74.7 in intact and 76.6 in ruptured cases) than in men (71 in intact and 73.1 in ruptured cases). There was a significant increase in the percentage of patients over the age of 75 years (from 31.6% in 1980 to 41.7% in 1991) which was very marked in men (from 25% to 40%). This may indicate that ageing of the population is partly responsible for the apparent increased incidence of the disease. Ruptured AAA constituted 36.5% of all cases of which 76.4% were men. The rate of ruptured cases has dropped from 73.7% in 1980 to 32.1% in 1991 probably owing to operating on more elective cases. Analysis of hospital fatality, including unoperated cases, showed a fatality rate of 8.4% for intact cases as opposed to 46.3% for ruptured cases. Allowing for improved diagnostic techniques and clinical awareness of the disease, the figures suggest a true increase in the incidence of AAA in the Grampian region.
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Aneurisma de la Aorta Abdominal/epidemiología , Anciano , Rotura de la Aorta/epidemiología , Femenino , Humanos , Masculino , Escocia/epidemiologíaRESUMEN
This retrospective study has reviewed the surgical management of the septic complications of diverticular disease involving the left colon in 77 patients who presented between 1980 and 1992. Over this period, Hartmann's resection continued to be the predominant surgical procedure. The overall mortality and morbidity rates in the study period were 10% and 31%, respectively. However, a marked improvement in survival was recorded in the latter half of the study (17% vs 6%). The mortality from Hartmann's resection was also reduced substantially in the second half of the study (24% vs 7.5%). These improvements occurred despite having a higher number of poor-risk patients (APACHE II score) with more severe pathology (generalised peritonitis, 35% vs 50%; faecal peritonitis, 9% vs 25%) in the latter half. There was a significantly worse survival in patients who were over 70 years of age (P < 0.03), those who had a severe concomitant medical illness (P < 0.02), those who had a generalised peritonitis (P < 0.02), and in those patients who had an APACHE II score of over 11 (P < 0.05) (Fisher's exact test). There was no difference in outcome (morbidity, mortality) between the various grades of surgeon involved in performing the emergency surgical procedures.
Asunto(s)
Diverticulitis del Colon/cirugía , Peritonitis/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Anastomosis Quirúrgica , Colostomía , Cuidados Críticos , Diverticulitis del Colon/complicaciones , Humanos , Cuerpo Médico de Hospitales , Persona de Mediana Edad , Peritonitis/etiología , Complicaciones Posoperatorias/mortalidad , Estudios Retrospectivos , Factores de RiesgoRESUMEN
From January 1980 to December 1992, sixty-two Hartmann's procedures were performed for septic complications of sigmoid diverticular disease, in the Professorial Unit at Aberdeen Royal Infirmary. Colorectal continuity was subsequently restored in 53% of the fifty-three surviving patients. The overall morbidity and mortality was 34% and 0% respectively. There were two anastomotic leaks (7%) while two patients (7%) developed anastomotic stenoses requiring multiple dilations. Closure of Hartmann's colostomy was carried out by consultants (48%), senior registrars (38%) and registrars with consultant supervision (14%). Fifteen anastomoses were hand sewn and fourteen were stapled. Twenty-one per cent of patients had closure of colostomy in less than 3 months, 48% between 3 and 6 months and 31% of reversals were carried out more than 6 months following their formation. The grade of surgeon had no influence on the outcome of reversal. Although the numbers were small, the morbidity was found to be highest in those patients in whom colostomy closure was carried out within 3 months of colostomy formation. Also, there was an increased incidence (7%) of anastomotic stenoses in the stapled anastomosis group.
Asunto(s)
Colostomía/métodos , Adulto , Anciano , Anciano de 80 o más Años , Divertículo del Colon/complicaciones , Femenino , Humanos , Masculino , Persona de Mediana Edad , Peritonitis/etiología , Peritonitis/cirugía , Complicaciones Posoperatorias , ReoperaciónRESUMEN
L-Arginine has been shown, in human breast cancers, to increase protein synthesis and the number of cells in the growth phase of the cell cycle. L-Arginine, therefore, may potentiate the response of breast cancers to cell cycle-specific cytotoxic agents. This phase II pilot study assessed the clinical, radiological and pathological responses in 44 patients with breast cancers > 4 cm in diameter (46 tumours: T2, n = 6; T3, n = 22; T4, n = 19), who received oral L-arginine 30 g day-1 for 3 days prior to each cycle of CHOP chemotherapy, followed after 4-6 cycles by radiotherapy. Following this treatment, 95% of patients had a clinical response: complete response in 30% and partial response in 65%. Imaging, ultrasound and mammography revealed response rates of 91% and 76% respectively. Surgery was performed in 43 patients. Histological examination revealed that in 18% of cases there was no residual evidence of tumour. Furthermore, if residual tumour was identified, the degree of destruction was graded as 'severe' in 36% and 'moderate' in 30% of cases. Further studies are now required to evaluate the potential beneficial use of nutritional pharmacology in combination with existing treatment regimens.
Asunto(s)
Arginina/administración & dosificación , Neoplasias de la Mama/patología , Neoplasias de la Mama/terapia , Adulto , Anciano , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/metabolismo , Terapia Combinada , Ciclofosfamida/administración & dosificación , Doxorrubicina/administración & dosificación , Estudios de Factibilidad , Femenino , Humanos , Mamografía , Mastectomía , Persona de Mediana Edad , Estadificación de Neoplasias , Prednisona/administración & dosificación , Dosificación Radioterapéutica , Ultrasonografía , Vincristina/administración & dosificaciónRESUMEN
BACKGROUND: The amino acid L-arginine is known to have immunostimulatory effects in animals and healthy human volunteers. We have studied the effect of dietary supplementation with L-arginine (30 gm/day for 3 days) on host defenses in patients with breast cancer. METHODS: Mitogenic responses of peripheral blood lymphocytes to concanavalin A, phytohemagglutinin, and pokeweed mitogen and phenotype analysis of lymphocyte subsets and activation markers were assessed before and after 3 days of L-arginine supplementation. The effect of L-arginine supplementation on natural killer and lymphokine-activated killer cell cytotoxicity and serum levels of the cytokines interleukin-1 beta and 2, interferon-gamma, and tumor necrosis factor-alpha were also measured. RESULTS: L-arginine significantly increased lymphocyte mitogenic reactivity to concanavalin A, phytohemagglutinin, and pokeweed mitogen (mean percentage increases: 64% [p < 0.001], 65% [p < 0.001], and 48% [p < 0.05], respectively). Natural killer and lymphokine-activated killer cell cytotoxicity was also significantly enhanced after L-arginine intake (mean percentage increase, 81% and 107% [p < 0.001]). However, no corresponding increase in circulating CD16+ and CD56+ cells was obtained: Arginine supplementation did not increase the level of serum cytokines. CONCLUSIONS: Dietary supplementation with L-arginine in patients with breast cancer significantly enhances host defenses and therefore may have a role in adjuvant treatment.
Asunto(s)
Arginina/uso terapéutico , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/inmunología , Inmunización/métodos , Anciano , Neoplasias de la Mama/patología , Citocinas/sangre , Citotoxicidad Inmunológica , Femenino , Humanos , Células Asesinas Activadas por Linfocinas/fisiología , Células Asesinas Naturales/fisiología , Subgrupos Linfocitarios/fisiología , Persona de Mediana Edad , Mitógenos/farmacología , FenotipoRESUMEN
Forty-two patients with locally advanced breast cancer were treated with multimodality therapy comprising neoadjuvant chemotherapy (cyclophosphamide, vincristine, doxorubicin and prednisolone) and radiotherapy to the breast and lymph-draining areas, followed by tamoxifen and then selective surgery. The objective response rate (UICC criteria) of the primary tumours to chemotherapy alone was 72%, which increased to 83% following radiotherapy. The patients have been followed up for 13-56 months and the probability of local control at 36 months was 0.83. The probabilities of distant disease-free survival and overall survival were 0.50 and 0.65 respectively, at 36 months. However, if the patients' breast cancers had shown a response to chemotherapy/radiotherapy then the distant disease-free survival and overall survival of these subgroups of patients were 0.61 and 0.83 respectively, at 36 months. Toxicity included nausea, vomiting, alopecia, and peripheral neuropathies (two patients), but with no episodes of severe infection or bleeding. This multimodality therapy has achieved good local control and satisfactory overall and distant disease-free survivals with excellent patient compliance.