Testing Strong Field QED Close to the Fully Nonperturbative Regime Using Aligned Crystals

Processes occurring in the strong field regime of QED are characterized by background electromagnetic fields of the order of the critical field F_{cr}=m^{2}c^{3}/ℏ|e| in the rest frame of participating charges. It has been conjectured that if in their rest frame electrons and positrons experience field strengths of the order of F_{cr}/α^{3/2}≈1600F_{cr}, with α≈1/137 being the fine-structure constant, their effective coupling with radiation becomes of the order of unity. Here we show that channeling radiation by ultrarelativistic electrons with energies of the order of a few TeV on thin tungsten crystals allows us to test the predictions of QED close to this fully nonperturbative regime by measuring the angularly resolved single photon intensity spectrum. The proposed setup features the unique characteristics that essentially all electrons (1) undergo at most a single photon emission and (2) experience at the moment of emission and in the angular region of interest the maximum allowed value of the field strength, which at 2 TeV exceeds F_{cr} by more than 2 orders of magnitude in their rest frame.

Researches about Knowledge of Self-Examination and some Problems about Breast Cancer

A research on the degree of knowledge about the problem of breast self-examination was carried out in a group of 500 women in the Out-patients Department of the Cancer Institute in Milan.

The women were given a questionnaire to fill up at home and to return at the moment of the medical examination.

The analysis of data showed that, though the level of education of the subjects was fairly good, the knowledge and the practise of the periodical self-examination as a method for an early diagnosis was very low. 70% of the women declared to have some knowledge about the method, but only 9% declared to practise it regularly.

What Do Italian Hospital Physicians Know about Quality of Life Assessment in Oncology?

Aims

To assess the current level of information and use of quality of life assessment instruments by Italian physicians involved in oncologic patient care.

Methods

Specifically trained scientific representatives of a pharmaceutical company interviewed 2237 hospital physicians all over Italy.

Results

A total of 1390 physicians (62.1%) had some knowledge of quality of life assessment tools in oncology, but 364 of them (26.2%) were unable to recall the name of any instruments. The one that was most frequently recalled by the 1026 physicians who knew of the existence of one or more instruments was the Karnofsky Performance Status (KPS) (91%) followed by the Eastern Cooperative Oncology Group performance scale (ECOG) (35.5%) whereas the Quality of Life Index and Visual Analogue Scale were at the very bottom of the list (5.9% and 3.7%, respectively). Physician age and type of department were found to be strong predictors of knowledge of the instruments, which was greater among young physicians and those working in oncological departments. Of the physicians aware of the KPS, 56.6% used it, whereas the percentage of physicians using ECOG was higher (69.5%).

Conclusions

The collected data indicate a poor knowledge of quality of life assessment instruments in Italian physicians. Most physicians tend to use so-called «objective» instruments where the assessment is made by the physician and not by the patient (KPS, ECOG Quality of Life index), are practically unaware of the new generation of «subjective» self-rating instruments. The use of such instruments in particular might provide greater insights into the impact of the disease and related treatments on the quality of life of cancer patients.

Volunteers in Hospital and Home Care: A Precious Resource

Aims and background

Ten years ago, a program o intervention by volunteers in cancer hospitals and at home was started. Home care is accomplished by teams of palliative care givers, in which volunteers are included. After a selective interview, all voluntary candidates with the necessary qualifications are trained and specific apprenticeship is done. Hence, their professional training is carried out through regular groups of supervision followed by a psychologist and a coordinator. A study was carried out to evaluate the activity of volunteers, in the hospital and at home, as judged by patients, nurses and the volunteers themselves.

Methods

On the whole, the data analyzed concerned 216 patients, 163 nurses and 92 volunteers in the hospital and 30 patients, 16 nurses and 35 volunteers at home. The questionnaires used for the study had four possible answers (no, a little, much, very much) or required an answer on a scale of 0 to 10.

Results

A high quota of patients gave a very positive opinion (“much” or “very much”) on the importance of the presence of volunteers in the hospital (76%) and at home (90%). In the second case, volunteers were particularly useful to improve a patient's mood (80%) and to solve practical problems (47%). General agreement was noted among nurses and volunteers on the activity of the latter. The main form of intervention of all volunteers is to give psychosocial support to patients. A score of 7 to 10 was given to this item by 60% of the nurses and by 82% of the hospital volunteers. At home, respectively 80% and 89% gave such a score for the same item. Other activities of the volunteer were support for the family, assistance in social activities, and to give information.

Conclusions

The presence of the volunteer in the hospital and at home appears to be helpful to the patient and the family by becoming part of the team without becoming involved directly in its clinical activity.

Usefulness of Breast Self-Examination for an Early Detection of Breast Cancer. Results of a Study on 500 Breast Cancer Patients and 652 Controls

The knowledge and practice of breast self-examination (BSE) was investigated among 500 women with operable breast tumors between 35 and 64 years of age (all successively operated) and 652 healthy women, matched with the previous group for 5-year age groups from 35 to 54 years. Only 39.9 % of breast cancer women and 34.5 % of the controls practiced BSE, and only a third of these did it monthly. Such practice tends to progressively decrease, starting from 45 years, and it is used less frequently by the women with a poor education and those in a lower economic bracket. Among the 500 breast cancer patients, those who practiced the self-examination had a higher number of tumors with a diameter no greater than 2 cm and a lower number with a diameter larger than 4 cm. In addition, in this group the percentage of unaffected axillary lymph nodes (N–) was 58.8 % compared to 48.8 % for the group that did not practice self-examination, and the percentage of the cases with more than 3 metastatic lymph nodes (N+ > 3) was 20.0 % in the first group and 27.3 % of the second one. These differences are statistically significant. The correlation between tumor diameter and the histologic lymph node stage is equally evident, since there is a progressive reduction in N– cases and a contemporary progressive increase in N+ (> 3) cases with increasing breast tumor diameter. Therefore, we can infer that the lack of practice of BSE causes a diagnostic and therapeutic delay, which is responsible for aggravation of the prognosis.

Psychologic Effects and Esthetic Results of Breast Reconstruction after Mastectomy

A survey was conducted on 84 patients who chose to have breast reconstruction after mastectomy. A self-rating questionnaire was sent to each patient by mail to collect as much information about the patient as possible: individual status, reasons for requesting breast reconstruction, acceptance and advantages of having the new breast, satisfaction with the overall esthetic results, amount of patient information regarding breast reconstruction, and the source of this information. Once the questionnaire was completely filled out, it was returned by mail to the persons conducting this study. Fourty-three patients (51% of sample) replied with a completed questionnaire. When all the data for this survey were collected, an interesting factor emerged: 33 patients (76.7% of those who replied) reported being substantially satisfied with the esthetic results of their operation. When asked about the reasons for requesting breast reconstruction, 16 patients asserted their request was based on the desire to prove to themselves that they had overcome the disease, and 16 to improve body image. When asked about the advantages of breast reconstruction, 17 patients believed the operation would help improve inner feelings about the loss of the breast. Thus breast reconstruction is indeed an element of prime importance to mastectomized women, especially for their physical and psychological rehabilitation.

Patients’ Assessment of Quality of Care: A Survey of a Group of Breast Cancer Patients in Italy

Patients’ assessment of quality of care was investigated in 825 women with breast cancer treated in a group of specialized and non-specialized institutions in Italy. A 10-page mail questionnaire explored patients’ adjustment to the disease, satisfaction with care, and quality of the information on diagnosis and treatment. Most of the 428 (52 %) responders reported good or acceptable adjustment to the disease (as reflected by acceptable performance in some daily living activities), and favorable judgment about care providers, but many women complained of hospital organizational deficiencies. A contradictory picture emerged regarding the quality of information. Completeness and thoroughness appeared seriously deficient when examined objectively using a series of explicit predefined criteria, but patients’ assessments showed in most cases moderate or high satisfaction. The paper presents these results and discusses pros and cons in the use of patients’ opinions for evaluation of quality of care.

Evaluation of Quality of Life in Patients with Malignant Dysphagia

Background

In the last 10 years of clinical research there has been increasing interest in the evaluation of quality of life. Several generic and specific instruments have been developed for this purpose. EORTC QLQ C-30 is a cancer-specific questionnaire translated into various languages and validated in several European countries including Italy, where the impact of malignant disease on different areas of quality of life is poorly documented.

Methods

The EORTC QLQ C-30 was administered to 109 patients referred to the endoscopy division of the Istituto Nazionale Tumori, Milan, for endoscopic palliative treatment of malignant dysphagia to test its characteristics in terms of acceptability and clinical validity.

Results

In this group of patients the impact of advanced esophageal cancer was highly evident for Emotional and Physical Functioning, Fatigue and Global QoL scales. Dysphagia is a serious problem for many patients; there is a correlation between grade of dysphagia and four QoL dimensions.

Conclusions

QoL assessment is an important tool to evaluate the adequate management of patients with esophageal cancer. The EORTC QLQ-C30 questionnaire proved to be valid and reliable also in this population.

The Importance of a Home Care Program for Patients with Advanced Cancer Pain

At the Pain Clinic of the National Cancer Institute of Milan, a special Home Care Program has been set up to assist advanced cancer patients with pain and their families during their remaining survival. The Home Care Unit comprises a team of physicians, nurse clinicians, psychologists and many volunteers who are active both in the hospital and at the patient's home. This entire operation provides a continuous relationship between the family, the patient and the Home Care Unit. This Home Care Program, which is one of a kind with other forms of treatment for advanced cancer patients (i.e. hospices), has produced interesting results. Out of a sample group of 50 patients, 33 were monitored at home by the Home Care Unit while 17 had their families to do the monitoring. Over a six-week period the following results were reported: a) Improvement of psycho-emotional factors such as anxiety, weakness and mood for both patients and their families who entered the Home Care Program. b) The Quality of Life Index remained unchanged for the sample group that entered the Home Care Program whereas it deteriorated for patients monitored by their families. c) A decrease in the Integrated Pain Score for both groups; however, results showed a statistically significant difference in favor of patients on the Home Care Program. d) The Performance Status decreased by very little over the study period, and there was little difference between the two groups. These results confirm the need for a Home Care Program which must go hand in hand with the Pain Clinic as an effective way to control Total Pain.

Plasma-based generation and control of a single few-cycle high-energy ultrahigh-intensity laser pulse

A laser-boosted relativistic solid-density paraboloidal foil is known to efficiently reflect and focus a counterpropagating laser pulse. Here we show that in the case of an ultrarelativistic counterpropagating pulse, a high-energy and ultrahigh-intensity reflected pulse can be more effectively generated by a relatively slow and heavy foil than by a fast and light one. This counterintuitive result is explained with the larger reflectivity of a heavy foil, which compensates for its lower relativistic Doppler factor. Moreover, since the counterpropagating pulse is ultrarelativistic, the foil is abruptly dispersed and only the first few cycles of the counterpropagating pulse are reflected. Our multidimensional particle-in-cell simulations show that even few-cycle counterpropagating laser pulses can be further shortened (both temporally and in the number of laser cycles) with pulse amplification. A single few-cycle, multipetawatt laser pulse with several joules of energy and with a peak intensity exceeding 10(23)  W/cm(2) can be generated already employing next-generation high-power laser systems. In addition, the carrier-envelope phase of the generated few-cycle pulse can be tuned provided that the carrier-envelope phase of the initial counterpropagating pulse is controlled.

Radiation-pressure-dominant acceleration: Polarization and radiation reaction effects and energy increase in three-dimensional simulations

Polarization and radiation reaction (RR) effects in the interaction of a superintense laser pulse (I>10(23) W cm-2) with a thin plasma foil are investigated with three dimensional particle-in-cell (PIC) simulations. For a linearly polarized laser pulse, strong anisotropies such as the formation of two high-energy clumps in the plane perpendicular to the propagation direction and significant radiation reactions effects are observed. On the contrary, neither anisotropies nor significant radiation reaction effects are observed using circularly polarized laser pulses, for which the maximum ion energy exceeds the value obtained in simulations of lower dimensionality. The dynamical bending of the initially flat plasma foil leads to the self-formation of a quasiparabolic shell that focuses the impinging laser pulse strongly increasing its energy and momentum densities.

Phenomenology and emotional impact of neuropsychiatric symptoms in orthotopic liver transplant for hepatocellular carcinoma

BACKGROUND

Few studies have focused on neuropsychiatric symptoms like hallucinations or delusions occurring in the early posttransplant period. The aim of this study was to estimate the percentage of patients reporting neuropsychiatric symptoms in the immediate postoperative phase, to describe the phenomenology, and to evaluate the emotional impact of such disorders.

METHOD

We studied 94 consecutive patients who underwent orthotopic liver transplant (OLT) for hepatocellular carcinoma at least 30 days prior. The presence of neuropsychiatric symptoms were retrospectively evaluated through a semistructured interview.

RESULTS

Overall 49 patients (52%) reported various postoperative neuropsychiatric symptoms. None of the demographic and clinical variables showed significant associations, except for barbiturate administration; patients using barbiturates showed a lower percentage of neuropsychiatric symptoms. It was a time-limited phenomenon that in most cases resolved by day 7 after transplantation. Interestingly, the most frequent emotion perceived was surprise and not fear; a nontrivial amount of patients reported happiness, while many patients reported no emotion.

CONCLUSIONS

The results of this study suggested the usefulness of a registry of the neurological and psychiatric complications after OLT that may help to clarify the pathogenic mechanisms of such complications and implement uniform protocols of prevention and treatment. In fact, better knowledge of the phenomenology of neuropsychiatric symptoms in OLT recipients could allow easier symptom recognition and therapy adjustments on the basis of the emotional impact of such symptoms on patients, family, and caregivers, as well as increase patients' awareness and capability to face this experience.

Quality of life studies and genito-urinary tumors

BACKGROUND

Genitourinary (GU) tumors represent a large proportion of solid cancers (1 of 4) and a wide variety of natural histories, based on various prognostic factors and resulting in different treatment options and end points. In some cases, for the same stage of disease, different treatment strategies do not impact differently on overall survival (OS): surgery vs. radiation, or radical vs. conservative multidisciplinary approach, adjuvant or neoadjuvant, chemotherapy vs. BSC. Quality of life (QoL) is considered a reasonable end point when differences in OS do not seem to be striking.

DESIGN

A review of the literature on different disease stages was undertaken to show where and when QoL was used as the end point of treatment efficacy.

RESULTS

Very few studies have been performed in prostate, bladder and testicular cancer to show the impact of different treatment approaches on QoL. Although these studies might be considered as non-conclusive, some data may allow a better choice for the patients.

CONCLUSIONS

QoL as the principal end point has not been used in clinical trials of GU tumors comparing different treatment approaches. This makes the choice between treatments offering similar survival but different toxicity patterns, body and behavioral consequences more difficult. We suggest that future prospective randomized studies should be planned taking into account the QoL as the main end point.

Health-related quality of life measures in cancer

The article provides a description of the characteristics of health-related quality of life (HRQOL) measures most frequently used in cancer research, such as the EORTC Quality of Life Questionnaire Core 30 Items (QLQ-C30). the Functional Assessment of Chronic Illness Therapy (FACIT) Measurement System, the Rotterdam Symptom Checklist (RSCL), and the Symptom Distress Scale (SDS). Quality-of-life instruments have been used more in research than in clinical practice. A standardised method of evaluating quality of life can help us to understand patient problems to the same degree as standard biological assessments do. This could provide an easy way to anticipate the main problems of the patient. Its function could be similar to that of a thermometer, which detects fever without revealing its cause, the identification of which is the physician's task. The development of questionnaires in electronic format could help support the clinical use of HRQOL questionnaires, in particular through the use of HTML or similar format with an automatic scoring, a data-entry database and a graphic presentation of the scores. Quality-of-life data could be also used to improve the communication between doctor and patient in order to elicit the patient's preferences concerning anticancer and symptom therapies.

HCV and cancer: a case-control study in a high-endemic area

BACKGROUND/AIMS

HCV is a RNA virus that cannot be integrated with the host genome; it can, however, exert its oncogenic potential indirectly by contributing to the modulatory effects of the host immune system, probably through a capacity to elude the immune system. We have carried out a case-controlled study on the different oncological pathologies which have, to date, been shown to have a relationship with HCV.

METHODS

We screened 495 patients with different types of cancer: 114 cases of liver cancer, 41 of multiple myeloma, 111 non-Hodgkin's lymphomas, 130 thyroid cancers, 63 cases of Hodgkin's disease. The controls were 226 patients with no history of cancer. The relationship between each cancer and HCV infection was assessed by means of odds ratios (OR) and corresponding 95% confidence intervals.

RESULTS

Risks were greater for liver cancer (OR=32.9 95% CI 16.5-65.4, p<0.0001), multiple myeloma (OR=4.5 95% CI 1.9-10.7, p=0.0004) and B-cell non-Hodgkin's lymphoma (OR=3.7 95% CI 1.9-7.4, p=0.0001). For Hodgkin's disease there was no significant association (p=0.3). An association between HCV and thyroid cancer was noted (OR=2.8 95% CI 1.2-6.3, p=0.01).

CONCLUSION

Our study is particularly important for public health since the high prevalence of HCV in the South of Italy gives reason to expect increases in not only liver cancer, but also tumors associated with the immune system and thyroid cancer in years to come.

HCV and tumors correlated with immune system: a case-control study in an area of hyperendemicity

Hepatitis C virus (HCV) is a RNA virus that cannot be integrated with the host genome; it can, however, exert its oncogenetic potential indirectly by contributing to the modulator effects of the host immune system, probably through a capacity to elude the immune system. We have carried out a case controlled study on tumors correlated with the immune system (multiple myeloma, non-Hodgkin lymphoma and Hodgkin disease) and HCV, in a high prevalence area. The relationship between each cancer and HCV infection was assessed by means of odds ratios (ORs) and corresponding 95% confidence intervals. Risks were greater for B-cell non-Hodgkin lymphoma (OR=3.7, 95%CI, 1.9-7.4, P=0.0001) and multiple myeloma (OR=4.5, 95%CI, 1.9-10.7, P=0.0004). Our study is particularly important for public health, since it shows that during the coming years in the South of Italy, because of the high prevalence of HCV, there are good reasons to expect not only an increase of liver cancer, but also an increased incidence of great number of tumors correlated with the immune system.

Characteristics of terminal cancer patients who committed suicide during a home palliative care program

Cancer patients may commit suicide at any stage of the disease and many risk factors of suicide have been described in the literature. To identify the possible vulnerability factors of suicide in five terminal cancer patients who committed suicide while they were cared for at home by well-trained palliative care teams, a psychological autopsy study was carried out by reviewing their medical records; their report of symptoms at the time of care; and with the caregivers', doctors', and nurses' recollection of events by means of a structured interview prepared ad hoc. We collected data regarding the physical, emotional, and social suffering of the patients, their personality profile, and their feelings with respect to the illness and disability. The interviews lasted for a mean of two hours and were performed from 2-8 years after the suicide events by the social worker at the Rehabilitation and Palliative Care Division. The interviews took place between June 1996 and January 1998. All the patients showed great concern about the lack of autonomy and independence, refused dependence on others and had fear/worry of losing their autonomy. Four patients presented functional and physical impairments, uncontrolled pain, awareness of being in the terminal stage, and mild to moderate depression. They had a feeling of hopelessness consequent to their clinical conditions, fear of suffering, and feeling of being a burden on others. They had a strong character and managerial professions. They had isolated themselves from others and they had previously talked about suicide. Before committing suicide, three patients had adverse physical/emotional consequences to the oncological treatments-they showed aggressiveness towards their family and one towards the home care physician. Multiple vulnerability factors were present simultaneously in all patients. However, the loss of, and the fear of losing, autonomy and their independence and of being a burden on others were the most relevant. The identification of a cancer patient at risk of committing suicide forms the first step for the prevention of and the setting up of adequate psychosocial rehabilitation of these patients whenever possible.

HHV-8 prevalence, immunosuppression and Kaposi's sarcoma in South Italy

The identification of HHV-8 has opened the way for numerous epidemiological studies aimed at determining both the prevalence of HHV-8 in various sub-groups of the population (affected or not by KS) and at identifying possible cofactors necessary for the development of KS. We set up a study to evaluate the prevalence of HHV-8 in the South of Italy in KS cases, hospital patients and blood donors and to verify the role of immunosuppression in KS. In KS patients the prevalence of lytic and latent antigens were both 91% (29 positive cases). Lytic and latent antigens have prevalence rates of 20% and 15% respectively in hospital patients. In the donor group the rates were 16% for lytic antigens and 2% for latent antigens. The most recurrent chronic pathology in KS patients was cardiopathy (5 cases). The pathological case histories report 4 cases of Herpes Zoster, 6 of diabetes, one case of hepatitis C who had also had gonorrea. There was also a case, negative to HHV-8, who had had malaria after residing for three years in Oristano in Sardinia (a zone with high endemic malaria). Our study confirms that in Southern Italy there are relatively high prevalences of HHV-8 both in the general population and in blood donors and that immunodysregulation may be involved in the pathogenesis of KS. Other studies are necessary to confirm the sexual transmission of the HHV-8 virus and to better understand the natural history of HHV-8 infection.

An assessment of delays in obtaining definitive breast cancer treatment in Southern Italy

Female population is medically underserved in Southern Italy (in comparison with other Italian regions). In a recent systematic review of published studies, delays of 3-6 months between symptom onset and treatment have been clearly associated with lower survival rates for breast cancer patients. The aim of this study was to examine breast cancer delays in medically underserved patients in Southern Italy, in order to recognize their determinating factors so as to provide women with a better opportunity for survival. The variables examined were age, education, symptom status at first presentation: symptomatic and asymptomatic, date of first symptom presentation, date of first consultation with a health provider, consulted provider, tumor size and nodal status, according to the pTNM system. Time intervals were categorized into: < 1 month, 1-3 months and > 3 months for patient and medical delay; 1-3 months, 3-6 months, > 6 months for overall delay. Patient delay was associated with education: a higher risk was found for women with < or = 5 years school attendance (OR = 3.3, 95%, CI 2.0-5.6). Medical delay was seen to be associated with the professional figure: significant differences were found between senologists (oncologist exclusively dedicated to breast cancer) and other specialists (OR 3.5, 95%, CI 1.5-8.4). Age and symptomatic presentation were found to be high risk factors. Concerning tumor size in overall delay in cases > 2 cm had OR values were of 2.4 (95%, CI 1.5-3.7). In conclusion our study suggests that diagnostic delay is associated with medically underserved status and can be reduced by educating younger and less educated women, as suggested in other studies and by providing training programs for members in the medical profession.

Quality of life assessment and outcome of palliative care

Quality of life (QoL) assessment is crucial for the evaluation of palliative care outcome. In this paper, our methodological approach was based on the creation of summary measures. Fifty-eight Palliative Care Units (PCUs) in Italy participated in the study. Each PCU randomly selected patients to be 'evaluated' among the consecutively 'registered' patients. At baseline (first visit) and each week the patient was asked to fill in a QoL questionnaire, the Therapy Impact Questionnaire (TIQ). Short-survivors (<7 days) were not included in the QoL study. The random sample of patients (n = 601) was highly representative of the general patient population cared for by the PCUs in Italy. The median survival was 37.9 days. We collected 3546 TIQ, 71.4 % completed by the patients. A Summary Measure Outcome score was calculated for 409 patients (81% of the patients included in the QoL study). The results of this national study showed that cooperative clinical research in palliative care is possible and QoL measures can be used to assess the outcome.

Determinant factors for diagnostic delay in operable breast cancer patients

Randomized trials of mammographic screening have provided strong evidence that early diagnosis and treatment of breast cancer can reduce the specific mortality. Moreover, in a recent systematic review of published studies, delays of 3-6 months between symptom onset and treatment have been clearly found to be associated with lower survival rates for breast cancer patients. The aim of this study was to examine delays registered among breast cancer patients in southern Italy, in order to recognize their determining factors so as to provide women with a better opportunity for survival. The variables examined were age (< 50, 50-64, > or = 65 years), education (< or = 5, > 5 school years); symptom status at first presentation (symptomatic or asymptomatic); date of first symptom presentation; date of first consultation with a health provider; the type of health provider consulted; tumour size and nodal status according to the pTNM system. Time intervals were categorized into: < 1 month, 1-3 months and > 3 months for patient and medical delay; 1-3 months, 3-6 months, > 6 months for overall delay. Patient delay was associated with age and education: a higher risk was found for women of over 65 years age (odds ratio (OR) 2.1, 95% confidence interval (CI) 1.2-3.5) and with < or = 5 years school attendance (OR 3.3, 95% CI 2.0-5.6). Medical delay was seen to be associated with the professional figure: significant differences were found between senologists (oncologists exclusively dedicated to breast cancer operation) and other specialists (OR 3.5, 95% CI 1.5-8.4). Young age and symptomatic presentation were found to be high risk factors. Concerning tumour size in overall delay, in cases where the tumour was > 2 cm the OR was 2.4 (95% CI 1.5-3.7). Our study suggests that diagnostic delay can be reduced by providing more efficient training programmes for members of the medical profession and by producing educational training programmes targeted specifically at each age category (i.e. in older women more attention to education in prevention; in younger women correct information about mammography and specialized structures).

HCV and hepatocellular carcinoma: A case-control study in an area of hyperendemicity

HCV is an RNA virus that cannot be integrated with the host genome; it can, however, exert its oncogenetic potential indirectly by contributing to the modulator effects of the host immune system probably through a capacity to escape the immune system. We have carried out a case controlled study in a hyperendemic area on HCV infection and liver cancer. We screened 114 liver cancer and 226 controls. All patients were at first diagnosis and examined. For liver cancer the risk was (OR=32.9, 95% CI 16.5-65.4, p<0.0001). Our study is particularly important for public health since it shows that in the South of Italy, because of the high prevalence of HCV and the high life expectancy, there are good reasons to suppose that the incidence rate of liver cancer will continue to increase in the next few years.

The difficult choice of chemotherapy in patients with unresectable non-small-cell lung cancer

The aims of this study were: to assess the attitude of non-small-cell lung cancer (NSCLC) patients to being treated with chemotherapy, determining whether and how much it differs from that expressed by patients with benign diseases or by healthy people; and to investigate how the information received about the treatment may influence the patients' decisions. A three-item self-assessment questionnaire measuring willingness to be treated with chemotherapy and presented according to three different scenarios (with an optimistic, neutral, and pessimistic physician's presentation) was administered to 104 NSCLC patients, 129 other patients with respiratory diseases (RDP), 140 health care providers (HCP) and 120 students (STU). Guttman's coefficient of reproducibility confirms the hierarchical structure of the three scenarios ranging from an optimistic to a pessimistic view. Relative to the other groups, cancer patients showed: (a) a consistently higher degree of uncertainty about whether to accept or reject chemotherapy; (b) the lowest acceptance rate in the optimistic and neutral scenario and, in contrast, the highest in the pessimistic scenario; (c) the highest percentage of constant answers, independently of the scenario presented, particularly as regards the answers "I don't know" (NSCLC = 25%, RDP = 9%, HCP = 2%, STU = 5%) and "Yes, I accept" (NSCLC = 29%, RDP = 31%, HCP = 19%, STU = 16%). Answer patterns differed markedly between cancer patients, the HCP, and the STU group, and in most cases the difference was statistically significant at a confidence level of 0.001. The differences between NSCLC and RDP patients were less marked, and not always statistically significant. The choice between accepting and rejecting chemotherapy is very difficult for patients with NSCLC, much more so than for healthy people, and it is often independent of the way the information is provided.

Outcome assessment in cancer management

The goals of cancer treatment may be prevention, cure, or palliation. In each case, the length and quality of survival are the ultimate outcomes to assess when evaluating the success of treatment. Some surrogate or intermediate endpoints, however, may be considered, such as toxicity or the tumor response. The first section of this article considers traditional outcomes and endpoints and intermediate or surrogate endpoints for survival and quality of life. The second section specifically addresses the issue of the quality-of-life outcome, which has become increasingly important over the last 2 decades. The last section suggests that combining survival and quality of life may not be easy. Costs are increasingly important in management of diseases, and the outcomes of cancer treatment frequently are measured against them. Although the definitions of cost-effectiveness and cost-utility are mentioned at the end of this article, the article does not deal with the problems of decision making for health resource allocation.

Cancer patients as 'experts' in defining quality of life domains. A multicentre survey by the Italian Group for the Evaluation of Outcomes in Oncology (IGEO)

Although the subjective nature of quality of life is generally accepted, less attention has been paid to the procedure of selecting domains to be explored with questionnaires. To explore what contributes to cancer patients' quality of life, a survey was conducted with the aim of identifying contents of quality of life using cancer patients as 'experts'. A questionnaire with open-ended items aimed at exploring the meaning of quality of life and at determining the contents of health and not health related quality of life, was submitted to a sample of cancer patients stratified by residence, cancer site and stage of disease. The 248 questionnaires received were transcribed and broken down into phrases to allow coding. A content analysis was performed, using as a conceptual framework, the domains identified by the Italian Society of Psycho-Oncology. Overall, 43 domains and a list of symptoms were identified. The two most frequently reported symptoms were pain (21.4% patients) and fatigue (14.1% patients). Social relationships and psychological domains were heavily represented. Twenty sub-domains related to the domain 'psychological well-being'. This study suggests that information on the content of quality of life questionnaires to be submitted to people affected by a specific disease, should be derived by studying people suffering the specific disease. These results reinforce the criticism that available quality of life instruments are more likely to reflect the perspective of health professionals than patients.

Changing patterns of breast cancer stage at diagnosis in southern italy: hospital data as indicators of progressive changes

BACKGROUND

In southern Italy diagnostic delay in breast cancer patients has been demonstrated to be related to the level of education and residency in rural areas. In order to verify whether late breast cancer diagnosis was actually in decline as a result of improving socioeconomic conditions and ongoing prevention programs, we evaluated clinical data from the tumor registry of the National Cancer Institute, Naples.

METHODS

Four thousand two hundred forty consecutive breast cancer patients admitted to our institution from 1986 to 1997 were grouped into four 3-year periods according to their admission date. Using multiple logistic regression, chi(2) for trend and beta-coefficient were calculated in each pT and pN categories in order to discover the trend for the 1986-1997 period.

RESULTS

A progressive, statistically significant decrease in the number of patients with advanced cancer at the time of diagnosis was observed over the study period. In particular, chi(2) values for trend for each pT category, over the study period, were pT1 119.4 (P < 0.001) with positive chi-coefficient, pT2 13.4 (P = 0.003) with negative beta, and pT3-pT4 152.2 (P < 0.001) with the strongest negative beta.

CONCLUSIONS

Changing patterns of breast cancer stage at diagnosis have been demonstrated in women living in Southern Italy. They are consistent with an increasing orientation toward prevention. Data from hospital tumor registries are a useful source of information on diagnostic delay.

Assessment of hospitalised cancer patients' needs by the Needs Evaluation Questionnaire

BACKGROUND

Cancer disease modifies the order and the nature of needs connected with the state of health. The aim of this study was to evaluate the informative, psychological, social and practical needs of hospitalised cancer patients by means of the Needs Evaluation Questionnaire (NEQ), an instrument designed concisely for the convenience of patients and medical staff.

PATIENTS AND METHODS

Different samples of consecutive hospitalised cancer patients were involved in the various phases of designing the instrument: 30 patients for items identification, 101 patients for completeness and acceptability evaluation, 423 patients for construct validity and prevalence of needs; content and reliability analysis were performed on 2 subsamples of, respectively, 60 and 88 of the patients from the last sample.

RESULTS

The validation analysis showed rather good reliability, structure validity and internal consistency of the questionnaire. The prevalence analysis showed that the most common needs were: 'more information about my future conditions' (74%); 'more information about my diagnosis' (56%); 'more information about the exams I am undergoing' (52%); 'more explanations on treatments' (51%); 'to have a better dialogue with clinicians' (57%); 'better services from the hospital' (bathrooms, meals, cleaning) (56%).

CONCLUSIONS

The NEQ, self-completed by patients, has proven to be a useful clinical tool for obtaining a systematic and undistorted overview of the principal needs with respect to the state of health of patients. This instrument, which can also be administered by persons not belonging to the health care system such as volunteers, and inserted into the patients' hospital charts, could be used by the medical staff to identify the real needs of patients at an early stage.

Suicide among patients with cancer cared for at home by palliative-care teams

Patients with terminal cancer are thought to be at high risk of committing suicide. In a population of 17,964 patients with terminal cancer cared for at home by 12 palliative-care teams, five patients committed suicide. We speculate that continuing care made up by symptomatic treatment and psychosocial support given to these patients may reduce the risk.

Terminal cancer patients and timing of referral to palliative care: a multicenter prospective cohort study. Italian Cooperative Research Group on Palliative Medicine

This study describes the characteristics of a representative sample of terminally ill cancer patients at admission to Italian palliative care programs, the rate and reasons for discontinuation of care, and survival after enrollment. All Italian palliative care units (PCUs) specifically committed to palliative care were asked to consecutively register all new patients (n = 3901) between January and June, 1995. Fifty-eight of the 62 PCUs contacted by the Steering Committee completed the study. A random sample of 589 evaluable patients was prospectively selected from the 2667 eligible patients. Patients were mostly referred by a general practitioner (31.2%) or a specialist (42.1%). Most patients (84.7%) were followed until death. Seventy-seven discontinued care because of hospital admission (6.6%), change of residence (3.9%), refusal (1.7%), or improvement (0.8%). Median survival was 37.9 days; 14.3% of the patients died within 7 days, and 15.3% lived longer than 180 days. A statistically significant association between survival and gender, cancer type, setting of the first visit, and type of unit was observed. In Italy, as in other countries with different health systems, referral of cancer patients to palliative care tends to occur late in the course of the disease. This study suggests that the process of enrollment and the duration of patients' survival in palliative care, when studied in large unselected populations, can provide important information relevant to the care of terminally ill patients.

[Quality of life at the end of life. Analysis of the quality of life of oncologic patients treated with palliative care. Results of a multicenter observational study (staging)]

Outcome in palliative care can be defined as patients' quality of life, quality of death and satisfaction with care. In an Italian multicentre prospectic study ('Staging') the quality of life of 571 palliative care patients with advanced cancer disease was assessed since the beginning of palliative care till the end of the study. We analyzed the tissue of quality of life missing data and the possibility to input the missing quality of life evaluation through the quality of life evaluation made by a proxy (doctor, nurse). The greatest functional impairment and an increasing level of some symptoms (fatigue, general malaise, emotional status) were observed during the last two weeks of life, whereas for other symptoms (gastro-intestinal, pain) some degree of control was possible. The quality of life analysis for palliative care patients should consider the different response of different quality of life components to the palliative care intervention.

Home palliative care for terminal cancer patients: a survey on the final week of life

As part of a large multicentre study on palliative care units in Italy, carried out between 1 January and 30 June 1995, we describe the place, circumstances and 'quality of death' of patients admitted to home palliative care. Data presented refer to 401 patients (67% of the 601 patients randomly selected for evaluation). Of these 401 patients 303 (76%) died at home. According to the Support Team Assessment Schedule (STAS) pain was fairly well controlled during the final week of life, while the control of other symptoms appeared to be less satisfactory. Invasive procedures were undertaken on 56% of patients, while in hospital the percentage increased to 75%. Twenty-five per cent of patients were totally pharmacologically sedated during the final 12 h of life. Neither the number of symptoms nor other factors were apparently associated with the decision to sedate the patient. The wide variations in the frequency of sedation among centres suggest that the choice to sedate the patient may reflect the provider's behaviour or services' policy rather than the patients' preference or needs. The definition of common criteria and guidelines for sedation of patients should be one of the topics for discussion among palliative care teams.

The code of conduct of the volunteer

Voluntary service has experienced a considerable expansion and a substantial change over the last two decades. The role of the volunteer has gradually come to interact with activities undertaken by other professionals, but without interfering. Since the role of the volunteer naturally involves autonomy and discretion on his/her behalf, the associations concerned increasingly feel the need to refer to standards defining a voluntary service ethic. Within a refresher course with a set number of places for non-profit-making organisations, which was arranged by the Italian League against Cancer, Milan, a consensus conference for the ratification of a code of conduct on voluntary service was held. The aim was to reach a consensus together with others who work in an "organised" manner every day, on ethical concepts that should inspire voluntary service: the common good, mutual respect, freedom of choice, a non-profit-oriented vision. After exhaustive discussions by three panels, the text of a code of conduct unanimously approved was elaborated. All concerned with this code tried to avoid giving it a "sanitary" imprint. It is in fact our opinion that whatever the area covered by voluntary service, its aim and its final objective is to ensure the wellbeing of mankind and his environment.

Quality-of-life evaluation: when do terminal cancer patients and health-care providers agree?

A multicenter study involving six palliative care units in Italy was carried out on 159 terminal cancer patients seen at home or in hospital. The physician or the nurse completed independently from the patient the Therapy Impact Questionnaire (TIQ), a questionnaire devised for quality-of-life evaluation in terminal cancer patients. The patient's assessment was used as the valid reference measurement to compare with the health-care workers' evaluation to assess the validity of the latter. The results showed that percentages of agreement were higher for physical than for psychological and cognitive symptoms, and that there was a greater agreement on the absence rather than on the presence of a problem. None of the characteristics of the patient nor of the proxy showed any statistically significant relationship with the two disagreement indexes. The results suggest that caution is needed in the use of health-care workers as alternative sources of information regarding patients' quality of life.

[Evaluation of quality of life in oncology. Rationale and objectives of the first phase of the Quality of Life in Oncology project]

Although the subjective nature of quality of life perception is generally accepted, less attention has been paid to the procedure of selecting domains to be explored with questionnaires. In most cases domains are selected by panel of experts. It is not known whether these domains are relevant for the patients. Moreover, questionnaires developed in 'foreign' countries may not be culturally sound or relevant for patients living in different cultural background. In order to explore what really contributes to quality of life of Italian patients, a survey was conducted with the aim of identifying any dimension of quality of life, positively or negatively impacted on from the illness and therapies. A sample of two hundred and eighty eight cancer patients with previously specified characteristics (primary tumor, stage of disease and place of residence) were identified. After consenting to partecipate to the study, a staff member (a physician, a nurse or a psychologist) asked the patient to complete an open-ended questionnaire in the out-patient clinic or at home. This questionnaire, partially derived from a study by Padilla et al. made up of 5 questions: 'What does the term quality of life mean to you?', 'What contributes to a good quality of life?', 'What contributes to a poor or bad quality of life?', 'Which either physical or psychological symptom interferes with your quality of life?', 'State any positive or negative change in your quality of life, due to illness or treatments'. The first question was asked to explore the meaning of quality of life for the patient; the second and third question were asked to determine the contents of quality of life not health related; the fourth question and the diary provided information about quality of life contents related to his own experience of disease. Two hundred and forty eight questionnaires (86.1%) were obtained from 7 Cancer Centres participating to the study (Genova, Milano, Roma, Perugia, Napoli, Cagliari, Palermo). All the questionnaires were transcribed and subsequently broken down in phrases on a form that allowed coding. Three raters (a research nurse, an oncologist and a clinical psychologist) made the content analysis using as conceptual framework the list of domains identified by the Italian Society of Psycho-Oncology. The present study shows the possibility to define the content domain of quality of life attributes for cancer patients, using patients as experts.

Dense granular bodies: a novel nucleoplasmic structure in hibernating dormice

Dense granular bodies (DGB) are particular structural constituents observed in cell nuclei of different tissues-liver, pancreas, brown adipose tissue, adrenal cortex-of hibernating dormice. They appear as strongly electron-dense clusters of closely packed granules, with thin fibrils spreading out at their periphery. DGB always occur in the nucleoplasm, sometimes making contact with other nuclear structural constituents typical of the hibernating state, such as coiled bodies, amorphous bodies and nucleoplasmic fibrils. DGB are present only during deep hibernation and rapidly disappear upon arousal from hibernation. Cytochemical and immunocytochemical analyses showed that DGB contain ribonucleoproteins and several nucleoplasmic RNA processing factors, suggesting that DGB can represent accumulation sites of splicing factors which are provided to splicing sites when normal metabolic activity is rapidly restored during arousal.

Attitudes toward euthanasia of physician members of the Italian Society for Palliative Care

BACKGROUND

The problems related to requests for euthanasia by terminal patients; the variations in attitude of palliative care physicians and the possibility that availability of the best palliative care might obviate the problem by eliminating requests for euthanasia, are under discussion.

DESIGN

A mailed survey with no possibility of follow-up of all 685 physician members of the Italian Society for Palliative Care (SICP) in 1994.

RESULTS

Of the 359 (52.4%) responders, 139 (39%) had received requests for euthanasia; 16 of them (4% of the responders but 11.5% of those who received requests) had complied at least once, while 216 (60%) had not; 125 (35%) thought that euthanasia was 'wrong' under all circumstances; 115 (32%) thought that situations could occur, even in the context of palliative care, in which euthanasia might be ethically 'correct'; 185 (52%) thought that the best palliative care might solve the problem of euthanasia, while 109 (30%) believed otherwise. The variable most strongly associated with a negative attitude toward euthanasia and with the opinion that the best palliative care might be a solution to the problem is religious belief (P < 0.0001).

CONCLUSIONS

The attitudes of physicians practising palliative care in Italy are not different from those reported by previous studies which investigated the attitude of other health professionals. There was no agreement about whether the best palliative care might reduce requests for euthanasia by terminal patients.

Immunological activation markers in the serum of African and European HIV-seropositive and seronegative individuals

OBJECTIVE

The concentration of type 1 and type 2 cytokines and fibroblast-associated apoptosis-1 soluble receptor (sAPO-1/Fas) was analysed in the sera of Ugandan and Italian HIV-1-seropositive and seronegative individuals. The data were compared to determine whether the immunological status of these groups was different.

METHODS

Sixty-seven Ugandan and 30 Italian HIV-positive patients were analysed and stratified according to CD4 counts (group 1, > 500 x 10(6)/l; group 2, 200-500 x 10(6)/l; group 3, < 200 x 10(6)/l). Sera from 15 Ugandan and 11 Italian HIV-negative blood donors were also analysed. Serum concentration of type 1 cytokines [interleukin (IL)-2, IL-12, and interferon (IFN)-gamma] and type 2 cytokines (IL-4 and IL-10), and sAPO-1/Fas were measured by enzyme-linked immunosorbent assay.

RESULTS

Serum levels of IL-2, IFN-gamma and IL-10 but not of IL-4 and IL-12, were elevated in HIV-positive group 1 and 2 Africans compared with HIV-positive Italian individuals. IL-4 was mildly augmented in HIV-positive group 3 African patients. Serum concentration of sAPO-1/Fas was reduced in HIV-positive Africans compared with HIV-positive Italian individuals. Finally, serum levels of IL-2 and IL-10 were increased and sAPO-1/Fas reduced when sera of HIV-negative African healthy controls were compared with their Italian counterparts. The ratio of type 1/type 2 cytokines was roughly 1.0 in HIV-negative African controls, and much greater than 1.0 in HIV-negative Italian controls.

CONCLUSIONS

These preliminary findings indicate that immune activation is present in African HIV infection. Furthermore, these data raise the possibility that abnormal immune activation and increased susceptibility to antigen-induced cell death is present even in HIV-negative African controls.

Quality of life in brain tumor patients

With the aim of evaluating the quality of life (QL) of 101 brain tumor patients, a multidimensional approach was adopted, using the Functional Living Index-Cancer (FLIC) as a global measure of well-being, the Karnofsky Performance Scale (KPS) and the Index of Independence in Activity of Daily Living (ADL) as indices of physical and functional dimensions, the State-Trait Anxiety Inventory (STAI) and the Self-Rating Depression Scale (SRDS) for psychological assessment, and neuropsychological tests for abstract reasoning, attention, memory and frontal lobe functions. The patients were grouped on the grounds of disease stage and treatment. The FLIC and KPS ratings increased from the patients who had just undergone surgery to patients who were disease-free after completing chemotherapy and radiotherapy, thus showing that the QL may improve during the disease despite aggressive treatments, providing there is no tumor recurrence. However, only the FLIC consistently discriminated the patients' stratification. The ADL revealed no between-group differences, whereas the STAI and SRDS revealed the presence of emotional troubles at the beginning and at the end of treatment. Cognitive impairment was more serious after radiotherapy and chemotherapy, as well as in patients with tumor recurrence. The FLIC significantly correlated with all of the other scales used, showing that it is useful in summarizing both the physical and psychosocial impairment of brain tumor patients. Of the pathological variables, a tumor location in the anterior right hemisphere or diencephalon was associated with high FLIC ratings, may be due to the minor cognitive impairment observed in patients with these tumor sites. Of the demographic variables, the level of education was associated with high FLIC ratings, thus highlighting the role of psychosocial environment in improving the QL. The use of a multidimensional approach or a global index of well-being that also reflects psychosocial and cognitive aspects proved to be more appropriate than traditional functional instruments (such as the KPS) in assessing the QL of brain tumor patients and in detecting the extent of the disease.

Italian consensus on a curriculum for volunteer training in oncology

Volunteers' education, together with selection and organization, are fundamental for an adequate volunteer service in oncology, which is focused on patient and family needs and is fully integrated with the activity of the care team. To achieve such an aim, well-defined requirements and educational objectives are essential. A curriculum for voluntary service in oncology was developed through a consensus of experts. By comparing the work carried out by six different teams, a questionnaire was drafted, which grouped 91 educational aims. For each, the questionnaire queried whether the aim was relevant or not, and, if yes, whether it should be pursued through (a) knowledge, (b) skill, and/or (c) attitude (with a possible multiple answer). To improve comprehension, the questionnaire was divided into five sections: (a) the association; (b) the disease, therapies, and care site; (c) voluntary service in oncology; (d) psychosocial aspects of the patient and family; and (e) approach, communication, and acceptance. The questionnaire was sent to 117 delegates from 93 Italian volunteer organizations who, during a period of 8 years, had attended a course for volunteer trainers held by the Italian League Against Cancer. As indicated in the letter forwarded with the questionnaire, the final document would report only the aims considered relevant by at least 70% of the participants. Moreover, the area(s) of pursuit (knowledge, skill, and attitude) would be stated for each goal when indicated by at least one-half of the participants. Of 117 individuals questioned, 83 (71%) replied. Of the 91 aims proposed, 60 were considered relevant, and a type of approach (knowledge, skill, and/or attitude) was suggested. The formative curriculum of voluntary service in oncology represents a consensual guideline for future training programs.

Karnofsky and ECOG performance status scoring in lung cancer: a prospective, longitudinal study of 536 patients from a single institution

The Karnofsky's index of performance status (KPS) and the Eastern Cooperative Oncology Group Performance Status Scale (ECOG PS) are widely used methods of assessing the functional status of cancer patients. In this study, we compare their predictive validity, and suggest a table of transformation between scales. 536 consecutive lung cancer patients were assigned both KPS and ECOG PS scores before, during and after treatment (in all, 1656 assignments). Patients were accurately staged at diagnosis, and carefully re-evaluated at each follow-up visit. Multiple clinical, laboratory and instrumental data were recorded along with performance status assessments. Survival times were measured from the pathological diagnosis. KPS and ECOG PS assignments were strongly related to each other (Spearman R = -0.869). Correlation between scales persisted unchanged in pretreatment and post-treatment assessments, advanced and limited diseases, response or non-response to treatment, and different assessors (R indices ranging from -0.825 to -0.901). A three-point conversion table showed the highest rate of success with an overall percentage of agreement exceeding 84% (grade 1: KPS = 100, 90, 80 and ECOG PS = 0, 1; grade 2: KPS = 70, 60 and ECOG PS = 2; grade 3: KPS < 60 and ECOG PS = 3, 4). Both univariate and multivariate analyses of survival documented the predictive validity of the two scales. However, KPS showed less ability than ECOG PS to discriminate patients with different prognosis. Because of the better predictive ability shown in this study, ECOG PS should be preferred to KPS. A general consensus on the scale to use could avoid problems of conversion, which is not always easy and free of errors.

Effect of home care on the place of death of advanced cancer patients

This study presents a prospective evaluation of the home care programme for patients with advanced cancer at the National Cancer Institute of Milan. Demographic, psychosocial and physical variables were evaluated. The Therapy Impact Questionnaire was used for symptom and quality of life assessment. The association of clinical and demographic variables with the place of death was investigated, considering that the aim of the home care programme is to follow up patients until death in their houses. Eighty-six per cent (86%) of patients died at home and 14% in hospitals. Multivariate analysis showed that only a higher degree of family support was associated with home death. Several changes in symptoms and quality of life items scores were seen, pain improved while physical debility and cognitive functions worsened throughout the home care duration to death. High intensity pain and dyspnoea were still present in, respectively, 23.8 and 15.3% of patients in the last week of life. Psychological distress was high at the end of life and did not seem to be affected by treatment. Home care is a feasible alternative for implementing palliative care in a selected population of patients with advanced cancer. Palliation of physical symptoms is more easily achieved than the control of psychological suffering. Family and economical issues implied by home care models should be part of the discussion in implementing palliative care for advanced cancer patients.