Bone and soft tissue sarcomas are often curable--but at what cost?: a call to arms (and legs)

How much is a leg worth following radical tumor resection in bone sarcomas? Literature review

Bone sarcomas of the lower extremities are rare malignancies occurring mostly amongst adolescents and young adults. Necessarily, the therapy conducted in sarcoma centers is multimodal and multidisciplinary. In certain cases, in a metastasis free situation with adequate therapy, an overall survival rate of 90% can be achieved. Two principal surgical procedures exit for the local control of the malignancy: 1. Limb salvage with biological with/or endoprosthetic reconstruction; and, 2. amputation with restoration of the function with exoprosthesis or endo-exoprosthesis. Currently, limb salvage procedures are performed in up to 95% of cases. In contrast, amputation is performed when the disease has reached an advanced stage or limb salvage has failed. Both of the surgical options have their risks and possible complications. According to the literature, there should be no significant difference between limb salvage and amputation with respect to long-term overall survival, overall quality of life, psycho-socio-economic outcomes, or patient satisfaction. An important advantage of limb salvage is greater everyday functionality. With the expanded indication of limb salvage and great survival rates, the cases of late complications in patients expecting to maintain their own leg continues to increase. In some cases, it requires multiple interventions, ranging from minor up to the most complex revisions, to maintain the functionality of the extremity. Despite the great costs, personal effort, and the possible complications, limb salvage could be a suitable method to achieve functionally beneficial outcomes and patient satisfaction in bone sarcomas of the lower extremities over the long-term even in cases involving complications.

The impact of cost on quality of surgical management in non-metastatic extremity sarcoma: A cross-country narrative literature review with a systematic approach

BACKGROUND

Extremity sarcoma surgery entails significant costs for patients, governments and insurers. Multiple studies have described individual costs, however, the overall impact of cost on the quality of surgical care remains unclear.

OBJECTIVES

A narrative review with a systematic approach was undertaken to compare the impact of cost on the quality of extremity sarcoma care across low-middle-income and high-income countries.

DATA SOURCES

MEDLINE, EMBASE, Cochrane, PsycInfo, DARE, NHS-EED, HTA.

METHODS

A systematic search was conducted using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. Inclusion criteria were: discussion of costs and the surgical management of primary extremity sarcoma. There were no restrictions on study design, publication type, date, geographic location or publication status. A data extraction table was used to identify study location, type and findings.

RESULTS

1012 studies were retrieved and 44 met the inclusion criteria. Four additional studies were identified from the reference lists of included articles. 27 studies were published in high-income countries (HIC) including all four full health economic analyses and 20 studies were published in low-middle income countries (LMC). Within LMC, cost impeded access to diagnosis, resection and options for reconstruction. In HIC, cost varied with choice of management, particularly during the long-term postoperative period.

CONCLUSIONS

Within LMC, cost impaired the provision of quality, curative care for patients with extremity sarcoma. Within HIC, while costs varied with chosen management, they were not prohibitive to the provision of quality care. Further research is required, specific to both socioeconomic contexts, to further describe the long-term cost-utility of different methods for the surgical management of extremity sarcoma.

Patient-Reported Outcomes in Sarcoma: A scoping review

PURPOSE

Sarcoma is a heterogeneous group of tumours, usually affecting young patients and related to both endogenous and exogenous risk factors. The importance of obtaining the patient's perspective of the illness experience is imperative. Patient-reported outcomes (PROs) are the outcomes that come directly from the patient. They include symptoms, functional health, well-being, quality of life, psychological issues, among other indicators reported by the patients. The objective of this scoping review was to map the PROs in sarcoma patients and how they are measured.

METHODS

The review process was guided by the Joanna Briggs Institute (JBI) checklist for scoping reviews.

RESULTS

The search identified 116 potentially relevant studies, with 27 articles meeting the inclusion criteria. The most common PRO evaluated in the selected studies were health-related quality of life (HRQoL), followed by functional outcome, aspects of mental health, and specific symptoms. Generic HRQoL questionnaires were widely used. Quantitative studies usually applied more than one type of Patient-Reported Outcome Measures (PROMs) to measure different PROs.

CONCLUSIONS

PROs should be carefully analysed to better understand the sarcoma patient's needs. The PROMs used in the selected studies about sarcoma were not specific to sarcoma, therefore, to better reflect on the perceptions of sarcoma patients, a different new and specific measurement strategy should be considered.

QUALITY OF LIFE IN ADULTS WITH SARCOMAS UNDER CONSERVATIVE SURGERY OR AMPUTATION

OBJECTIVE

To understand the perception of quality of life, functionality, and psychological aspects of adults with lower limb sarcoma who underwent conservative surgery or amputation.

METHODS

Sociodemographic data were collected, and the following questionnaires were used: EORTC QLQ - C30 for quality of life, the Functional Assessment System (MSTS) for functionality and the Beck Depression Inventory (BDI) for depression symptoms.

RESULTS

The sample consisted of 45 young adults with sarcoma, divided into two groups: amputation (29) and conservative surgery (16). Most were male, single and students. Average family income before and after the disease did not differ, but those that were employed had a better perception of general quality of life, as well as those with higher family income after the disease. Regarding the type of surgery, there was a predominance of amputation; osteosarcoma was the most common histological type and the most affected region was the femur. All participants participated in social, cultural, sporting or religious activities. MSTS and Beck scale values did not differ between procedures.

CONCLUSION

Given the scarcity of studies on the subject at the national level, further investigations are suggested to explore aspects related to quality of life for patients with sarcomas. Level of Evidence III, Retrospective comparative study.

QUALITY OF LIFE OF PATIENTS WITH SARCOMA AFTER CONSERVATIVE SURGERY OR AMPUTATION OF LIMBS

OBJECTIVE

To conduct an integrative review on quality of life (QOL) of patients with sarcoma who underwent conservative surgery or limb amputation.

METHODS

We conducted a six-step integrative review by searching the databases LILACS, SciELO, PePSIC, Embase, and PubMed, using the descriptors: "Quality of life", "Bone cancer", "Sarcoma", "Limb Salvage," and "Amputation." Ten studies were selected according to: database, type of study, methods, researcher's profession, sex, histological type, title, country/region, and periodical/year of publication.

RESULTS

Nine quantitative and one qualitative studies were included. All were conducted by physicians and correlated to QOL with the impact of diagnosis, psychosocial aspects, cancer treatment, and survival. Other aspects included type of surgery, functionality, rehabilitation, and a multidisciplinary approach. The QOL results were similar for conservative surgery and amputation in eight studies. In two, it was concluded that patients undergoing conservative surgery had a better QOL.

CONCLUSION

The number of studies on QOL in patients with sarcoma is small. In most, there was no difference between the study groups. In addition, the studies indicated the importance of evaluation of QOL, since it has a direct effect on patients' physical manifestations and impacts their coping abilities. Level of evidence III, System review.

The Patient Experience with Soft Tissue Sarcoma: A Systematic Review of the Literature

BACKGROUND

Soft tissue sarcomas (STS) are a heterogenous group of rare tumors that involve the connective tissue in the body (e.g. muscle, tendons). As with many rare tumors, little is known about the impact of STS on patient well-being.

OBJECTIVE

The aim of this review was to better understand current knowledge related to patient experience and quality of life (QOL) following diagnosis of STS.

METHODS

A systematic review of English-language articles published from 2005 to 2015 was conducted in the PubMed/MEDLINE, Embase, PsychINFO, and Evidence-Based Medicine databases. The review included recent conference proceedings and advocacy websites. Articles were eligible if they included adult STS patient-reported outcomes (PROs) or details on patient experience.

RESULTS

Overall, 3430 articles were identified and 20 were eligible for inclusion. Of these, 14 were clinical studies that included PRO measures, 1 summarized PRO measures used in STS studies, and 5 described the STS patient experience. Patients with STS report a range of impacts on QOL, including emotional well-being, body image, functional deficit following surgery, and practical considerations such as child care and work.

CONCLUSIONS

Few studies have published either qualitative or quantitative data on the patient experience with STS. While STS has a measurable impact on QOL, there is a lack of detailed information in the published literature. Although PROs are used in clinical studies of STS, they are not STS-specific and may not capture the unique needs of this population. There is a need for qualitative research to better understand both patient and caregiver experiences in STS.

How PET/MR Can Add Value For Children With Cancer

PURPOSE

To review how PET/MR technology could add value for pediatric cancer patients.

RECENT FINDINGS

Since many primary tumors in children are evaluated with MRI and metastases are detected with PET/CT, integrated PET/MR can be a time-efficient and convenient solution for pediatric cancer staging. 18F-FDG PET/MR can assess primary tumors and the whole body in one imaging session, avoid repetitive anesthesia and reduce radiation exposure compared to 18F-FDG PET/CT. This article lists 10 action points, which might improve the clinical value of PET/MR for children with cancer. However, even if PET/MR proves valuable, it cannot enter mainstream applications if it is not accessible to the majority of pediatric cancer patients. Therefore, innovations are needed to make PET/MR scanners affordable and increase patient throughput.

SUMMARY

PET/MR offers opportunities for more efficient, accurate and safe diagnoses of pediatric cancer patients. The impact on patient management and outcomes has to be substantiated by large-scale prospective clinical trials.

Cost-utility of osteoarticular allograft versus endoprosthetic reconstruction for primary bone sarcoma of the knee: A markov analysis

BACKGROUND

The most cost-effective reconstruction after resection of bone sarcoma is unknown. The goal of this study was to compare the cost effectiveness of osteoarticular allograft to endoprosthetic reconstruction of the proximal tibia or distal femur.

METHODS

A Markov model was used. Revision and complication rates were taken from existing studies. Costs were based on Medicare reimbursement rates and implant prices. Health-state utilities were derived from the Health Utilities Index 3 survey with additional assumptions. Incremental cost-effectiveness ratios (ICER) were used with less than $100 000 per quality-adjusted life year (QALY) considered cost-effective. Sensitivity analyses were performed for comparison over a range of costs, utilities, complication rates, and revisions rates.

RESULTS

Osteoarticular allografts, and a 30% price-discounted endoprosthesis were cost-effective with ICERs of $92.59 and $6 114.77. One-way sensitivity analysis revealed discounted endoprostheses were favored if allografts cost over $21 900 or endoprostheses cost less than $51 900. Allograft reconstruction was favored over discounted endoprosthetic reconstruction if the allograft complication rate was less than 1.3%. Allografts were more cost-effective than full-price endoprostheses.

CONCLUSIONS

Osteoarticular allografts and price-discounted endoprosthetic reconstructions are cost-effective. Sensitivity analysis, using plausible complication and revision rates, favored the use of discounted endoprostheses over allografts. Allografts are more cost-effective than full-price endoprostheses.

Plastic surgery for the oncological patient

The therapy of oncological patients has seen tremendous progress in the last decades. For most entities, it has been possible to improve the survival as well as the quality of life of the affected patients. To supply optimal cancer care, a multidisciplinary approach is vital. Together with oncologists, radiotherapists and other physicians, plastic surgeons can contribute to providing such care in all stages of treatment. From biopsies to the resection of advanced tumors, the coverage of the resulting defects and even palliative care, plastic surgery techniques can help to improve survival and quality of life as well as mitigate negative effects of radiation or the problems arising from exulcerating tumors in a palliative setting. This article aims to present the mentioned possibilities by illustrating selected cases and reviewing the literature. Especially in oncological patients, restoring their quality of life with the highest patient safety possible is of utmost importance.

Quality of life measures in soft tissue sarcoma

The assessment of health-related quality of life (HRQL) via patient-reported outcomes has the potential to answer critical questions and improve the care of soft tissue sarcoma (STS). This review outlines the rationale for quality of life measures in sarcoma, and details various instrument types: disease- and anatomic-specific, provider-generated, generic HRQL and health state utilities. Prior usage in STS populations, relative advantages of specific patient-reported outcome measures and a framework for selecting appropriate measures are discussed. Uniform incorporation of validated HRQL measures in STS clinical research would further the understanding of patient wellbeing beyond traditional clinical measures, and more widespread use of health state utilities measures in particular has the potential to facilitate comparative effectiveness research.

Functional outcomes and quality of life in patients with osteosarcoma treated with amputation versus limb-salvage surgery: a systematic review and meta-analysis

INTRODUCTION

To perform a meta-analysis for comparing the functional outcomes and quality of life (QOL) of osteosarcoma patients receiving amputation or limb-salvage surgeries.

MATERIALS AND METHODS

A search was conducted of the Medline, Cochrane, EMBASE, and Google Scholar on September 30, 2013. Studies were included in the analysis if there were patients who underwent amputation and limb-salvage surgery for osteosarcoma or Ewing's sarcoma, and for whom postoperative functional outcomes and QOL were evaluated. Outcomes were compared between participants who underwent limb-salvage operation and those who underwent amputation. The methodological quality of non-randomized comparative studies was assessed using the Newcastle-Ottawa Scale.

RESULTS

A total of 121 studies were identified and 6 were included in the meta-analysis. Quality assessment indicated that all six studies were of high quality. The mean age of the participants ranged from 17 to 37 years, and among them 118 underwent amputations and 138 underwent limb-salvage procedures. The mean length of follow-up ranged from 28 to 145 months. The meta-analysis indicated that functional outcomes and QOL were similar between patients who underwent amputation and those who underwent a limb-salvage procedure.

CONCLUSIONS

This meta-analysis including six high-quality studies indicates that amputation and limb-salvage surgery provide similar functional outcomes and quality of life for patients with osteosarcomas.

An aza-macrocycle containing maltolic side-arms (maltonis) as potential drug against human pediatric sarcomas

Background

Identification of new drugs against paediatric sarcomas represents an urgent clinical need that mainly relies on public investments due to the rarity of these diseases. In this paper we evaluated the in vitro and in vivo efficacy of a new maltol derived molecule (maltonis), belonging to the family of molecules named hydroxypyrones.

Methods

Maltonis was screened for its ability to induce structural alteration of DNA molecules in comparison to another maltolic molecule (malten). In vitro antitumour efficacy was tested using a panel of sarcoma cell lines, representative of Ewing sarcoma, osteosarcoma and rhabdomyosarcoma, the three most common paediatric sarcomas, and in normal human mesenchymal primary cell cultures. In vivo efficacy was tested against TC-71 Ewing sarcoma xenografts.

Results

Maltonis, a soluble maltol-derived synthetic molecule, was able to alter the DNA structure, inhibit proliferation and induce apoptotic cell death in paediatric sarcoma cells, either sensitive or resistant to some conventional chemotherapeutic drugs, such as doxorubicin and cisplatin. In addition, maltonis was able to induce: i) p21, p15 and Gadd45a mRNA upregulation; ii) Bcl-2, survivin, CDK6 and CDK8 down-regulation; iii) formation of γ-H2AX nuclear foci; iv) cleavage of PARP and Caspase 3. Two independent in vivo experiments demonstrated the tolerability and efficacy of maltonis in the inhibition of tumour growth. Finally maltonis was not extruded by ABCB1, one of the major determinants of chemotherapy failure, nor appeared to be a substrate of the glutathione-related detoxification system.

Conclusions

Considering that treatment of poorly responsive patients still suffers for the paucity of agents able to revert chemoresistance, maltonis may be considered for the future development of new therapeutic approaches for refractory metastatic patients.

CD99 drives terminal differentiation of osteosarcoma cells by acting as a spatial regulator of ERK 1/2

Differentiation therapy is an attractive treatment for osteosarcoma (OS). CD99 is a cell surface molecule expressed in mesenchymal stem cells and osteoblasts that is maintained during osteoblast differentiation while lost in OS. Herein, we show that whenever OS cells regain CD99, they become prone to reactivate the terminal differentiation program. In differentiating conditions, CD99-transfected OS cells express osteocyte markers, halt proliferation, and largely die by apoptosis, resembling the fate of mature osteoblasts. CD99 induces ERK activation, increasing its membrane-bound/cytoplasmic form rather than affecting its nuclear localization. Through cytoplasmic ERK, CD99 promotes activity of the main osteogenic transcriptional factors AP1 and RUNX2, which in turn enhance osteocalcin and p21(WAF1/CIP1) , leading to G0 /G1 arrest. These data underscore the alternative positions of active ERK into distinct subcellular compartments as key events for determining OS fate.

Survivors of childhood and adolescent cancer: life-long risks and responsibilities

Survival rates for most paediatric cancers have improved at a remarkable pace over the past four decades. In developed countries, cure is now the probable outcome for most children and adolescents who are diagnosed with cancer: their 5-year survival rate approaches 80%. However, the vast majority of these cancer survivors will have at least one chronic health condition by 40 years of age. The burden of responsibility to understand the long-term morbidity and mortality that is associated with currently successful treatments must be borne by many, including the research and health care communities, survivor advocacy groups, and governmental and policy-making entities.

A systematic review of the recent quality of life studies in adult extremity sarcoma survivors

Background. Extremity sarcoma represents a heterogeneous group of rare cancers that carries a relatively high morbidity with regards to physical function. Quality of Life (QoL) as an outcome is an important consideration in this cohort. We aimed to identify the correlates of QoL in extremity sarcoma cohorts. Methods. A systematic review of the literature on extremity sarcoma in adults from five databases over the last ten years was undertaken. Results. Twelve articles were chosen and assessed for quality. Physical and social function of extremity sarcoma survivors is below that of the general population. Overall QoL scores of these patients are comparable to those of the general population. Studies that used more recently treated cohorts found that patients who had limb sparing surgery displayed superior functional outcomes over those that underwent amputations. Pain and perceiving that the cancer negatively influenced opportunities was associated with poor outcomes. Conclusion. The available literature regarding QoL in extremity sarcoma patients is heterogeneous in terms of aims and assessment tools. Results need to be interpreted in light of the improved management of extremity sarcoma in more recent patient cohorts.

Health related quality of life in adolescent and young adult survivors of lower extremity bone tumors

BACKGROUND

Dramatic increases in survival rates have led to increased interest regarding the health related quality of life (HRQOL) of adolescent and young adult survivors of bone tumors. This study investigated HRQOL and physical disability in adolescent and young adult survivors of lower extremity bone tumors as a function of type of surgical intervention, gender, and age at assessment.

PROCEDURE

Twenty-eight participants (age range 18-32 years) completed three generic and one disease-specific measures of HRQOL and a measure of physical disability. For analysis, surgical intervention was grouped into limb sparing surgeries (LS; allograft fusion and endoprosthesis) and ablative surgeries (AMP; amputation or Van Nes rotationplasty). Age at study was grouped into ≤ 25 years of age and ≥ 26 years of age. The MOS-SF-36, HUI2, HUI3, and EORTC-QLQ-C30 were used to measure HRQOL and the TESS was used to assess physical disability.

RESULTS

Survivors reported HRQOL equivalent to the general population, with the exception of physical functioning. LS reported poorer HRQOL than AMP participants for emotional functioning and fatigue. Males reported better HRQOL compared with females for overall HRQOL, general health, physical functioning, and social functioning. Finally, younger participants generally reported better HRQOL than older participants for overall HRQOL and physical functioning.

CONCLUSIONS

This study identifies LS surgical intervention, female gender and older age as risk factors for reduced HRQOL in adolescent and young adult survivors of lower extremity bone tumors. This study also provides information about what instrument may be most useful in identifying these specific difficulties and subgroups.

Occupational outcomes of adult childhood cancer survivors: A report from the childhood cancer survivor study

BACKGROUND

The authors examined whether survivors from the Childhood Cancer Survivor Study were less likely to be in higher-skill occupations than a sibling comparison and whether certain survivors were at higher risk for lower-skill jobs.

METHODS

The authors created 3 mutually exclusive occupational categories for participants aged ≥ 25 years: Managerial/Professional, Nonphysical Service/Blue Collar, and Physical Service/Blue Collar. The authors examined currently employed survivors (4845) and their siblings (1727) in multivariable generalized linear models to evaluate the likelihood of being in 1 of the 3 occupational categories. Multinomial logistic regression was used among all participants to examine the likelihood of these outcomes compared to being unemployed (survivors, 6671; siblings, 2129). Multivariable linear models were used to assess survivor occupational differences by cancer-  and treatment-related variables. Personal income was compared by occupation.

RESULTS

Employed survivors were less often in higher-skilled Managerial/Professional occupations (relative risk, 0.93; 95% confidence interval 0.89-0.98) than their siblings. Survivors who were black, were diagnosed at a younger age, or had high-dose cranial radiation were less likely to hold Managerial/Professional occupations than other survivors. In multinomial models, female survivors' likelihood of being in full-time Managerial/Professional occupations (27%) was lower than male survivors (42%) and female (41%) and male (50%) siblings. Survivors' personal income was lower than siblings within each of the 3 occupational categories in models adjusted for sociodemographic variables.

CONCLUSIONS

Adult childhood cancer survivors are employed in lower-skill jobs than siblings. Survivors with certain treatment histories are at higher risk for lower-skill jobs and may require vocational assistance throughout adulthood.

Sexual function in adolescent and young adult survivors of lower extremity bone tumors

BACKGROUND

Improving survival rates and new surgical options have led to increased interest regarding late effects and quality of life in adolescent and young adult survivors of bone cancers, including their sexual functioning. This study investigated sexual functioning in adolescent and young adult survivors of lower limb bone tumors, in relation to surgical treatments, gender differences, depressive symptoms, global self worth, and physical disability.

PROCEDURE

Twenty-eight participants (age range 18-32 years) completed measures of gender specific sexual function, depressive symptoms, global self worth, and physical disability. For analysis, surgical intervention was grouped into limb sparing surgeries (LS; allograft fusion and endoprosthesis) and amputation or Van Nes rotationplasty (AMP).

RESULTS

Male survivors reported significantly higher scores than females on total sexual function scores (P = 0.050), sexual drive (P = 0.002), and frequency of sexual thoughts, fantasies or erotic dreams (P = 0.021). Men also reported significantly better physical functioning scores than women (P = 0.012). LS scored significantly lower on frequency of sexual thoughts, fantasies and erotic dreams (P = 0.048) and frequency of sexual experiences (P = 0.016) compared with AMP. In addition, LS reported significantly more depressive symptoms scores (P = 0.004) and lower self worth scores (P = 0.037), than AMP.

CONCLUSIONS

These results suggest that male survivors of lower extremity bone tumors experience better sexual functioning than women. Survivors of limb sparing surgeries struggle with sexual function, depressive symptoms, and poor self-perception compared to Van Nes rotationplasty and amputation survivors.

Psychosocial and functional outcomes in long-term survivors of osteosarcoma: a comparison of limb-salvage surgery and amputation

BACKGROUND

Traditionally, physicians have believed that limb-salvage surgery has functional and cosmetic advantages over amputation, yet the literature is equivocal. Therefore, we sought to compare the psychosocial and functional outcomes in osteosarcoma survivors after limb-salvage surgery and amputation. We hypothesized there to be neither psychosocial nor functional outcome differences between groups.

PROCEDURE

Participants received treatment of extremity osteosarcoma, had received their cancer diagnosis at least 2 years prior, and were at least 16 years old. A comprehensive set of validated psychosocial and functional measures was used to assess outcome.

RESULTS

Fifty-seven patients participated in this study (33 who underwent limb-salvage surgery and 24 who underwent amputation). Participants had gone 12-24 years since diagnosis and were 16-52 years old at study participation. We used multiple linear regression models to examine differences in quality of life, body image, self-esteem, and social support between the two groups and found no differences. Lower limb function was a significant predictor of quality of life (P < 0.001), whereas surgery type did not impact this relationship. Body image was rated significantly worse by those who underwent late amputation, amputation after failed limb salvage, than by those who did not.

CONCLUSIONS

Participants with more functional lower limbs had better quality of life than did those with less functional lower limbs regardless of whether they underwent amputation or limb-salvage surgery.

Prognostic markers in osteosarcoma

Osteosarcoma is the most common bone tumor seen in the pediatric and adolescent age group. Survival rates in osteosarcoma have improved considerably from 20 to 65% since the 1980s with the advent of multiagent chemotherapy. Further improvement in survival has not been achieved owing to lack of well-validated prognostic markers and better therapeutic agents. Markers involved with angiogenesis, cell adhesion, apoptosis and cell cycle have been shown recently to play an important role in osteosarcoma growth, differentiation and metastasis. Over the coming years, the new molecular markers may be able not only to prognosticate osteosarcoma patients at baseline but also to serve as therapeutic targets and thereby improve survival rates further. Noninvasive imaging methods in osteosarcoma such as PET-CT and dynamic contrast enhanced and diffusion-weighted MRI hold a lot of promise as surrogate methods for prognostication and response assessment.