Radiotherapy in the elderly

Radiotherapy of the oldest old-feasibility and institutional analysis

PURPOSE

Little is known about efficacy and toxicity of radiation therapy in the elderly, as the vast majority of prospective trials excluded patients aged over 70 years. The aim of this study was to investigate the outcome of radiation therapy in a group of so-called oldest old cancer patients (≥85 years).

MATERIALS AND METHODS

We retrospectively reviewed data from patients aged ≥85 years, treated between 2010 and 2015 for any tumor histology at the University Hospital Zurich, Switzerland. Overall survival (OS), relapse-free survival (RFS), performance status (ECOG), Charlson comorbidity index (CCI) and treatment tolerance were assessed.

RESULTS

We identified and included 100 patients with a mean age of 88 years (range: 85-102 years). Most patients received a curative-intent treatment (n = 64, 64%). About one third received palliative radiation therapy for symptomatic metastatic disease (n = 36, 36%). Curative treatment was well tolerated, with no high-grade acute toxicities (≥grade 4). Median OS was 52.6 and 13.1 months for the curative and palliative treated patient groups, respectively. 5‑year OS for all patients was 39.5% (95% CI: 23.6-54.5%). The Charlson comorbidity index (CCI) had a predictive value for overall survival (CCI > 10, p = 0.0001) in the curative group.

CONCLUSION

The number of older cancer patients will increase considerably in the next decades because of demographic changes. Our analysis supports the notion that radiation therapy for this patient group of oldest old cancer patients is feasible in general. Treatment decisions should not be based on chronological age but rather on comorbidities and functional status.

Elderly patients with painful bone metastases should be offered palliative radiotherapy

PURPOSE

To investigate the efficacy of palliative radiotherapy (RT) in relieving metastatic bone pain in elderly patients.

METHODS AND MATERIALS

The response to RT for palliation of metastatic bone pain was evaluated from a prospective database of 558 patients between 1999 and 2008. The pain scores and analgesic intake were used to calculate the response according to the International Bone Metastases Consensus Working Party palliative RT endpoints. Subgroup analyses for age and other demographic information were performed.

RESULTS

No significant difference was found in the response rate in patients aged >or=65, >or=70, and >or=75 years compared with younger patients at 1, 2, or 3 months after RT. The response was found to be significantly related to the performance status.

CONCLUSION

Age alone did not affect the response to palliative RT for bone metastases. Elderly patients should be referred for palliative RT for their painful bone metastases, regardless of age, because they receive equal benefit from the treatment.

A population-based study of the fractionation of palliative radiotherapy for bone metastasis in Ontario

PURPOSE

To describe the use of palliative radiotherapy (PRT) for bone metastases in Ontario between 1984 and 2001 and identify factors associated with the choice of fractionation.

METHODS AND MATERIALS

Electronic RT records from the nine provincial RT centers in Ontario were linked to the Ontario Cancer Registry to identify all courses of PRT for bone metastases.

RESULTS

Between 1984 and 2001, 44,884 patients received 74,432 courses of PRT for bone metastases in Ontario. The mean number of courses per patient was 1.7, and 65% of patients received only a single course of PRT for bone metastasis. The mean number of fractions per course was 3.9. The proportion of patients treated with a single fraction increased from 27.2% in 1984-1986 to 40.3% in 1987-1992 and decreased thereafter. Single fractions were used more frequently in patients with a shorter life expectancy, in older patients, and in patients who lived further from an RT center. Single fractions were used more frequently when the prevailing waiting time for RT was longer. There were wide variations in the use of single fractions among the different RT centers (intercenter range, 11.8-62.3%). Intercenter variations persisted throughout the study period and were not explained by differences in case mix.

CONCLUSIONS

Despite increasing evidence of the effectiveness of single-fraction PRT for bone metastases, most patients continued to receive fractionated PRT throughout the two decades of this study. Single fractions were used more frequently when waiting times were longer. There was persistent, unexplained variation in the fractionation of PRT among different centers.

Preoperative radiotherapy in elderly patients with rectal cancer

PURPOSE

We performed a retrospective analysis in order to evaluate the compliance with preoperative radiotherapy in patients aged>or=70 with locally advanced resectable rectal cancer, and to evaluate the influence of comorbidities on treatment tolerance and oncological results.

METHODS

From March 1984 to December 2000, 95 patients with T3-T4 N0 M0 rectal cancer received a preoperative radiotherapy in 2 radiotherapy departments. Nineteen patients received concomitant chemotherapy.

RESULTS

All patients completed the radiation schedule. Six patients suffered grade 3 acute WHO toxicity. Surgical resection was performed in 87 patients. There were 3 post-operative deaths. Analysis of peri-operative complications showed thromboembolism (4.9%), ileus (9.8%) and diarrhoea (6.1%). After a median follow-up of 29 months, the 3- and 5-year overall survival rates were 65% and 49% respectively. In univariate analysis, a tumour located in the mid part of the rectum, a radiation dose less than 40 Gy, the absence of chemotherapy were significantly associated with a poor prognosis. There was a trend to a better survival for patients with a Charlson score of 0 (P=0.0584). In multivariate analysis, only initial WHO performance status was significant.

CONCLUSIONS

Compliance with preoperative radiotherapy is good in elderly patients. Toxicity rates are similar to those described in randomised trials in which only younger patients were included. Initial WHO performance status<or=1 is significantly associated with better survival.

Referral rates and trends in radiotherapy as part of primary treatment of cancer in South Netherlands, 1988–2002

BACKGROUND AND PURPOSE

To study referral rates and time trends in the use of primary radiotherapy (RT).

PATIENTS AND METHODS

The proportion and number of irradiated patients were calculated in a population-based setting among 58,436 cancer patients diagnosed between 1988 and 2002.

RESULTS

The number of patients receiving RT within 6 months of diagnosis (RT6mo) increased by about 3.3% annually, the proportion of all incident cases that received RT6mo remained stable (+/-30%). Only 20% of elderly patients (75+) received RT6mo. The proportion of cancer patients that received RT6mo increased markedly between 1988-1992 and 1998-2002 for patients with prostate cancer (15 and 28%, respectively), rectal cancer (33 and 43%) and brain tumours (48 and 67%). The absolute number of irradiated breast cancer patients increased 30% between 1988 and 2002. Among patients with rectal cancer, a shift occurred from postoperative to preoperative RT since 1995. The percentage of irradiated patients with stage I endometrial cancer decreased from 47% in 1988-1992 to 15% in 1998-2002.

CONCLUSIONS

The percentage of cancer patients who received primary RT remained stable throughout 1988-2002, being consistently lower for older patients. The increased number of irradiated patients was due mainly to earlier detection and the ageing of the population. To clarify the overall percentage of patients irradiated, population-based studies on RT given after 6 months since diagnosis are warranted.

The influence of age and comorbidity on receiving radiotherapy as part of primary treatment for cancer in South Netherlands, 1995 to 2002

BACKGROUND

The objective of this study was to study the influence of age and comorbidity on receiving radiotherapy (RT) in primary treatment of cancer.

METHODS

In a population-based setting, the authors calculated the proportion of irradiated patients within 6 months after they received a diagnosis of lung, rectal, breast, or prostate cancer or non-Hodgkin lymphoma (n = 33,369 patients) according to age and comorbidity between 1995 and 2002. Logistic regression analysis was used to adjust for age, comorbidity, gender, and stage.

RESULTS

Patients with localized nonsmall cell lung cancer (NSCLC) ages 65 years to > or = 80 years or with comorbid conditions received RT alone significantly more often compared with younger patients (ages 65-79 years: odds ratio [OR], 3.4; age > or = 80: OR, 12.0) and patients without comorbidities (1 comorbid condition: OR, 2.1; > or = 2 comorbid conditions: OR, 2.4). This also applied to patients with nonlocalized NSCLC ages 65 years to 79 years compared with younger patients (OR, 1.4). RT was administered significantly less often to elderly patients with resected rectal cancers (ages 65-79 years: OR, 0.7; age > or = 80 years: OR, 0.4), patients age > or = 80 years with breast cancer after undergoing conserving surgery (OR, 0.1), and patients age > or = 80 years with clinical T1-T3,N0,M0 prostate cancer age (OR, 0.1) compared with younger patients. Patients with breast cancer who underwent breast-conserving surgery received RT significantly less often in the presence of comorbidities (1 comorbid condition: OR, 0.6; > or = 2 comorbid conditions: OR, 0.4). Older patients with aggressive non-Hodgkin lymphoma received only RT as treatment significantly more often compared with younger patients (OR, 3.4).

CONCLUSIONS

Comorbidity and age did have influence over whether patients received RT, although, for most tumor types, age appeared to be a stronger predicting factor. Under treatment was observed among patients with breast cancer and rectal cancer.

Medical decision-making for seriously ill non-elderly and elderly patients

OBJECTIVES

Age of patients by itself is no longer a contra-indication for most medical interventions. The increase of possible interventions for elderly patients has contributed to a sharp age-specific increase of health care costs. Our study aimed to increase the insight in medical decision-making about life-prolonging interventions for patients from non-elderly and elderly age groups.

DESIGN

Case-control study.

SETTING

Clinical practices in three settings: oncology, nursing home and cardiology.

SUBJECTS

Eighty-one physicians, representing a response of 60%.

METHODS

Face-to-face interviews using a structured questionnaire addressing decision-making about the application of taxoid treatment for breast cancer patients, the application of bypass surgery for patients with angina pectoris under or over 70 years of age, and referral to specialist treatment because of a suspected malignancy of nursing home patients under or over 75 years of age.

RESULTS

The chance of having been treated was in all settings lower for patients with a relatively poor quality of life and for patients who had no (known) preference to be treated. No differences were found for chance of having been treated between non-elderly and elderly patients with similar patient characteristics. The only exception to this is the patient preference concerning treatment: elderly patients were more likely to have been treated against their will than non-elderly patients were.

CONCLUSIONS

A relatively high frequency of non-treatment decisions for elderly patients may be predominantly explained by the fact that patient characteristics that determine non-treatment decision-making are more prevalent in elderly age groups, and not by the effect of age per se.

Influence of age, comorbidity and performance status on the choice of treatment for patients with non-small cell lung cancer; results of a population-based study

BACKGROUND

In the Netherlands in 1997, 43% of patients with newly diagnosed lung cancer were over 70. Large age-specific differences in treatment exist. We examined whether age, comorbidity, performance status and pulmonary function influenced treatment.

PATIENTS AND METHODS

Data on patients with newly diagnosed non-small cell lung cancer (N = 803) were obtained: comorbidity, performance status, pulmonary function (FEV1) and initial treatment. Age-specific differences in treatment according to the guidelines were examined. Odds ratios were calculated by means of logistic regression analyses.

RESULTS

82% with stage I or II disease received treatment according to the guidelines; this applied to 48% with stage IIIA disease and to 54% with stage IIIB disease. For all stages, this proportion decreased with increasing age. In stage IV disease, 36% did not receive any treatment; this applied to 52% of the elderly patients (75+ years). Multivariate analyses showed associations between comorbidity and treatment choice, but none with performance status. Age of 75+ years appeared to be the most important factor for not receiving treatment according to guidelines.

CONCLUSION

A substantial proportion of elderly patients with non-small cell lung cancer did not receive standard treatment. Performance status and comorbidity seldom formed the underlying reason. Calendar rather than biological age seemed to play the most important role in choice of treatment for patients with non-small cell lung cancer.

The opinion of general practitioners on the treatment of prostate and breast cancer in elderly people: results of a survey based on clinical models

AIMS

Several publications have reported age-related differences in the management of people with cancer. Most data have been derived retrospectively from hospital or cancer-centre databases. The aim of the present study was to identify major decisional factors observed in general practitioner (GP) practices, outside the hospital setting, regarding the clinical management of patients with prostate and breast cancer.

MATERIALS AND METHODS

During three national GP meetings in Belgium, questionnaires presenting two simulated patient cases were presented to GPs who were asked two questions: one regarding further staging and referral of the case and the second regarding the treatment of the case. A total of 678 questionnaires were distributed. GPs received two randomly selected cases each: a breast cancer history and a prostate cancer history. Three variables were assessed simultaneously: age, performance status and medical history (comorbidity).

RESULTS

The analysis indicated that elderly patients were more likely to be referred for non-curative treatment (OR 13.71; 95% CI 5.67-33.12; P < 0.0001 for prostate cancer and OR 17.67; 95% CI 4.04-77.31; P < 0.0001 for breast cancer). The other variables (performance status and medical history) did not affect treatment orientation. However, GPs were prepared to seek assistance from oncologists in both cases, irrespective of the patient's age.

CONCLUSION

Age seems to be more important among GPs in deciding how to manage cancer patients than performance status and comorbidity. This is a very common prejudice. They are, nevertheless, inclined to refer people with cancer to oncologists independently of the patient's age.

Older people with non small cell lung cancer in clinical stage IIIA and co-morbid conditions. Is curative irradiation feasible? Final results of a prospective study

Radiotherapy (RT) is widely used in the management of lung cancer but age-oriented randomized trials are lacking in older-unfit patients. We started a prospective study to evaluate the toxicity and efficacy of definitive RT in very old-unfit patients with non-small cell lung cancer (NSCLC) in clinical stage IIIA, according to AJCC 1988. Forty patients, age > or = 75 years, Karnofsky Performance status (KPS) > or = 60, unfit to receive an aggressive combined treatment, were entered in the study. Each patient had one or more comorbidities, and the Charlson score was greater than two in 7/40. All patients were treated with radiation fields encompassing the primary tumor and grossly involved lymph nodes. A median radiation dose of 60 Gy/2 Gy day/5 days a week, was delivered. The 40 patients have been followed up, including those who died, for a potential median time of 4.6 years. As results, no treatment-related mortality, and clinically insignificant acute morbidity was recorded: in 28/40 cases a mild esophagitis occurred. Two patients showed a clinical radiation pneumonitis (RP). Late normal tissue damage was represented by lung fibrosis (40/40 patients). The treatment was efficacy since each patient obtained some clinical benefit from it. Median survival (MS) was 19 months (range 5-68); the 3 and 5-year actuarial survival was 18 and 12%, respectively. In conclusion, we think that older patients with concomitant illness can be submitted to curative 'involved field' irradiation and the results observed in this trial encourage to use curative RT in older subjects with local-regionally advanced NSCLC and co-morbid condition.

Radiotherapy-related early morbidity in head and neck cancer: quantitative clinical radiobiology as deduced from the CHART trial

BACKGROUND AND PURPOSE

Early reactions after radiotherapy for head and neck cancer may become the limiting factor in current attempts to intensify loco-regional therapy through altered fractionation or combination of radiotherapy with chemotherapy. The aim of the present study was to quantify the dependence of early reactions on the dose-fractionation used in radiotherapy and on patients' age and radiation field size.

PATIENTS AND METHODS

The data analyzed are from the randomized controlled trial of CHART (continuous hyperfractionated accelerated radiotherapy) vs. conventional radiotherapy in head and neck cancer. The trial accrued 918 patients from March 1990 to April 1995. Several early morbidity items were evaluated weekly for the first 8 weeks after the start of treatment. Weekly evaluation was continued in patients with early reactions extending beyond 8 weeks. Linear regression was used to analyze the time with reactions in individual patients. Polychotomous ordinal response regression was used to analyze the peak grade of early reactions in individual patients.

RESULTS

The main findings of this analysis were as follows. (1) The incidence and peak prevalence of confluent mucositis was higher after CHART than after conventional radiotherapy. Therefore, the average time spent with confluent mucositis per patient treated was significantly longer after CHART than after conventional fractionation. (2) In patients who actually developed confluent mucositis, the average duration of this grade of reaction was not significantly different after CHART compared with conventional radiotherapy. (3) Confluent mucositis developed earlier after the start of treatment (2.9 vs. 4.9 weeks) but also started to improve sooner (5.4 vs. 7.5 weeks after the start of treatment) after CHART than after conventional radiotherapy. (4) The dose recovered per 1-day protraction of overall treatment time, D(prolif), was estimated at 0.80 Gy with 95% confidence limits 0.7 and 1.1 Gy/day for human mucosa. (5) For human skin erythema, the estimate of D(prolif) was 0.12 Gy/day with 95% confidence limits -0.12 and 0.22 Gy/day. (6) Highly significant relationships were found between the grade of morphological mucositis on one hand and dysphagia, pain on swallowing and prescribed analgesics on the other. Patients with confluent mucositis had fewer functional problems if this was confined to the larynx as compared with other subsites in the head and neck. (7) Although the incidence of confluent mucositis was higher in the oral cavity and oropharynx than in the hypopharynx and larynx, the radiobiological properties of mucosal reactions did not show significant variation among the various subsites within the head and neck region. (8) For a given dose and overall treatment time, a highly significant increase in incidence and severity of both mucositis and erythema was seen with increasing field size. Thus, a significant dose-volume or dose-area effect exists for both of these tissues. (9) Patients' age had no significant influence on the incidence and severity of mucositis or erythema.

CONCLUSIONS

This study provides quantitative estimates of the dose-time and dose-volume relationships for human skin and normal mucosa in the head and neck region based on an analysis of data from 918 patients entered into a randomized-controlled trial of altered dose fractionation in radiotherapy.

Impact of breast cancer treatment guidelines on surgeon practice patterns: results of a hospital-based intervention

BACKGROUND

Despite evidence regarding the effectiveness of post-surgical treatments for early-stage breast cancer, older women are less likely to receive appropriate therapy. We evaluated the impact of surgeon-specific "performance reports" on adherence to treatment guidelines among older women with breast cancer.

METHODS

We obtained diagnostic and treatment data from hospital tumor registries supplemented with self-reported adjuvant therapy information on 1099 patients with stage I or II breast cancer diagnosed between November 1, 1992, and January 31, 1997, at 6 Rhode Island hospitals. We compared rates of appropriate treatment receipt before and after distribution of performance reports. Hierarchical analysis was used to account for the nesting of patients within surgeons. Separate analyses of mastectomy and breast-conserving surgery were performed.

RESULTS

Age was negatively associated with post-surgical treatment, with patients who had breast-conserving surgery and who were older than 80 years significantly less likely to undergo radiation therapy (adjusted odds ratio = 0.08 [0.04, 0.14]) or appropriate adjuvant therapies (adjusted odds ratio = 0.14 [0.08, 0.22]) or both relative to 70- to 79-year-old patients. This effect did not improve post-intervention. While there was much variability in compliance with guidelines, surgeons' characteristics did not explain this variation.

CONCLUSIONS

In Rhode Island, advanced age continues to be associated with less than adequate breast cancer therapy. Providing surgeons with "feedback" on the appropriateness of adjuvant treatment for older patients was insufficient to alter established practices. Using guideline compliance data as standard "quality indicators" of physician practice may be required.

[Cancer and the elderly. Management. Decision aspects]

INTRODUCTION

Age is the major risk factor for the majority of patients with cancer. More than 50% of cancers occurs after the age of 60. Cancer in the elderly is therefore a public health issue at stake. However, in daily clinical practice the elderly presenting cancer are not listened to with great interest and treatment is often not proper or suboptimal.

CURRENT KNOWLEDGE AND KEY POINTS

Diagnosis in the elderly is established at a more advanced stage of cancer than in younger people; diagnostic workup is reduced and suboptimal treatments are implemented. Therefore, barriers exist that prevent the elderly from accessing the healthcare system as easily as their younger counterpart. Misconceptions about cancer also lead them to delay their first visit. As well, although treatment with curative intent and without major side-effect is feasible, physicians have misconceptions regarding therapeutic possibilities. Due to the heterogeneity of the so-called "ageing population", difficulties are related to patients' selection.

FUTURE PROSPECTS AND PROJECTS

Decision in oncology for the elderly must walk a fine line in attempting to deliver the best treatment under the best conditions. Age per se must not be the only criterion for medical decision. Providing accurate information adapted to the elderly, with large circulation among healthcare professionals, should lead to the same quality of care as that in young people. Comprehensive multimodal geriatric assessments should help to further differentiate patients who may benefit from curative treatment from those for whom only palliative treatment is necessary.

Radiotherapy in the management of cervical cancer in elderly patients

PURPOSE

To report treatment results and complications experienced by elderly patients treated with curatively intended radiotherapy for cancer of the uterine cervix.

PATIENTS AND METHODS

One hundred and fourteen elderly patients (median 75.5 years, range 70.0-85.9) consecutively referred for curative radiotherapy in the period 1987-1996 were prospectively followed with regard to tumour control and complications. The importance of age, stage (FIGO), tumour size, histology, tumour fixation, haemoglobin, concurrent disease, performance status (WHO) and type of radiotherapy were assessed using univariate and multivariate analyses.

RESULTS

Treatment was completed as planned in 68%, delayed in 29% and stopped prematurely in 3%. The frequency of grade 3 late complications was 11% and the actuarial probability at 5 years was 20%. Overall 5-year survival according to FIGO was 61% (I), 34% (II) and 25% (III). Cox multivariate analysis identified tumour size as independent prognostic factor for tumour control, disease-free survival and overall survival. FIGO stage was predictive for late grade 2 complications. We were unable to identify significant factors with respect to grade 3 complications. Age was not a significant parameter for any of the investigated endpoints.

CONCLUSION

Elderly patients in good performance status with advanced cancer of the uterine may tolerate radical radiotherapy with acceptable morbidity and reasonable survival. Radiotherapy may also be a good alternative in early stage disease for surgically unfit elderly patients.

Radiotherapy for non-small cell lung cancer in patients aged 75 and over: safety, effectiveness and possible impact on survival

For patients with advanced, inoperable non-small cell lung cancer (NSCLC), increasing age seems to be the primary reason of receiving no treatment. The elderly aged 75 years and over are more likely to be given only supportive care (irrespective of symptoms) or no therapy at all. We evaluated the outcome of 48 patients, aged 75 years and over, treated with radiation therapy for advanced (stage IIIA-B), inoperable, symptomatic NSCLC. A median dose of 50 Gy was delivered to the primary site and mediastinum with standard fractionation. Based on WHO criteria, of 47 assessable patients, 21 had partial remission, 17 stable disease, and nine had progressive disease. Most symptoms were successfully palliated. Toxicity was negligible and mainly consisted of WHO grade I-II esophagitis. Despite the overall median survival being short (5 months), dose-related survival was much better in patients given at least 50 Gy than in those treated with lower doses: 52% versus 35% at 6 months, and 28% versus 4% at 13 months. These results confirm that radiation therapy may be safely delivered to very aged patients with advanced NSCLC at not merely palliative doses, both to achieve better local control and to give likely survival benefits. Adequate pretreatment evaluation should be always performed to exclude any comorbidity unfit to chest radiation and to individualize treatment to the single patient requirements. Because a large amount of literature data now concurs with the feasibility and safety of high-dose radiotherapy in the elderly, specifically designed, age-oriented trials are needed to settle definitively the issue of survival advantage from curative radiotherapy in these patients.