Cost-effectiveness of pulmonary resection and systemic chemotherapy in the management of metastatic soft tissue sarcoma: a combined analysis from the University of Texas M. D. Anderson and Memorial Sloan-Kettering Cancer Centers

Sarcoma Pulmonary Metastatic Disease: Still a Chance for Cure

Tumors of soft tissue origin are not common but are increasing in incidence. Given the rare and heterogeneous nature of the disease, deciding on an effective treatment approach to the patient can be challenging. Approximately 20-50% of patients with sarcoma will develop metastases to the lung via hematogenous spread. Despite improvements in systemic therapy options for patients with metastatic disease to the lung, surgical resection of metastases is often the preferred option in patients who are safe surgical candidates. Clearance of metastatic disease with surgical resection has been proven to be cost-effective and can improve chances for long term survival. Deciding on who may benefit from surgical resection is best achieved in a multidisciplinary setting.

Impact of Intraoperative Molecular Imaging after Fluorescent-Guided Pulmonary Metastasectomy for Sarcoma

BACKGROUND

Intraoperative molecular imaging (IMI) has been shown to improve lesion detection during pulmonary sarcomatous metastasectomy. Our goal in this study was to evaluate whether data garnered from IMI-guided resection of pulmonary sarcoma metastasis translate to improved patient outcomes.

STUDY DESIGN

Fifty-two of 65 consecutive patients with a previous history of sarcomas found to have pulmonary nodules during screening were enrolled in a nonrandomized clinical trial. Patients underwent TumorGlow the day before surgery. Data on patient demographics, tumor biologic characteristics, preoperative assessment, and survival were included in the study analysis and compared with institutional historical data of patients who underwent metastasectomy without IMI. p values < 0.05 were considered significant.

RESULTS

IMI detected 42 additional lesions in 31 patients (59%) compared with the non-IMI cohort where 25% percent of patients had additional lesions detected using tactile and visual feedback only (p < 0.05). Median progression-free survival (PFS) for patients with IMI-guided pulmonary sarcoma metastasectomy was 36 months vs 28.6 months in the historical cohort (p < 0.05). IMI-guided pulmonary sarcoma metastasectomy had recurrence in the lung with a median time of 18 months compared with non-IMI group at 13 months (p < 0.05). Patients with synchronous lesions in the IMI group underwent systemic therapy at a statistically higher rate and tended to undergo routine screening at shorter interval.

CONCLUSIONS

IMI identifies a subset of sarcoma patients during pulmonary metastasectomy who have aggressive disease and informs the medical oncologist to pursue more aggressive systemic therapy. In this setting, IMI can serve both as a diagnostic and prognostic tool without conferring additional risk to the patient.

Pulmonary metastasectomy in bone and soft tissue sarcoma with metastasis to the lung

 

OBJECTIVES

This study investigated the outcomes of sarcoma patients with lung metastases who underwent pulmonary metastasectomy (PM), compared to patients who underwent medical management alone. The secondary objective was to compare survival after PM between variables of interest.

METHODS

This was a retrospective review of 565 sarcoma patients with confirmed, isolated pulmonary metastasis identified from the Surveillance, Epidemiology and End Results database between 2010 and 2015. 1:4 propensity score matching was used to select PM and non-PM groups. The multivariable Cox proportional hazards model was used to analyse prognostic factors of disease-free survival (DFS).

RESULTS

Of the eligible 565 patients, 59 PM patients were matched to 202 non-PM patients in a final ratio of 3.4. After propensity matching, there were no significant differences in baseline characteristics between PM and non-PM patients. The median DFS after PM was 32 months (interquartile range 18–59), compared to 20 months (interquartile range 7–40) in patients without PM (P = 0.032). Using a multivariable Cox proportional hazards model, metastasectomy (hazard ratio 0.536, 95% confidence interval 0.33–0.85; P = 0.008) was associated with improved DFS. In a subset analysis of patients who underwent PM only, the median DFS was longer in males compared to females (P = 0.021), as well as in bone sarcoma compared to soft tissue sarcoma (P = 0.014).

CONCLUSIONS

For sarcoma patients with metastatic lung disease, PM appears to improve the prognosis compared to medical management. Furthermore, there may be a survival association with gender and tumour origin in patients who underwent PM. These data may be used to inform the surgical indications and eligibility criteria for metastasectomy in this setting.

Stereotactic Body Radiotherapy Versus Metastasectomy in Patients With Pulmonary Metastases From Soft Tissue Sarcoma

The lung is the preferred site of metastasis from soft tissue sarcoma (STS). This systematic review aims to evaluate the outcomes of stereotactic body radiotherapy (SBRT) and metastasectomy (MTS) for the treatment of lung metastases from STS. A systematic review was carried out according to the PRISMA protocol. PubMed, Medline, EMBASE, Cochrane Library, Ovid and Web of Knowledge databases were searched for English-language articles to December 2018 using a predefined strategy. Retrieved studies were independently screened and rated for relevance. Data were extracted by two researchers. In total, there were 1306 patients with STS: 1104 underwent MTS and 202 had SBRT. The mean age ranged from 40 to 55.8 years in the MTS group and from 47.9 to 64 years in the SBRT group. The cumulative death rate was 72% (95% confidence interval 59-85%) in the MTS group and 56% (38-74%) in the SBRT group. The cumulative mean overall survival time was 46.7 months (36.4-57.0%) in the MTS group and 47.6 months (33.7-61.5%) in the SBRT group. The cumulative rate of patients alive with disease was 5% (2-9%) in the MTS group and 15% (6-36%) in the SBRT group. Finally, the cumulative rate of patients alive without disease in the two groups was 19% (9-29%) and 20% (10-50%), respectively. Our study showed that local treatment of pulmonary metastases from STS with SBRT, compared with surgery, was associated with a lower cumulative overall death rate and similar overall survival time and survival rates without disease. By contrast, SBRT was associated with a higher survival rate with disease than MTS. Large randomised trials are necessary to confirm these findings and to establish whether SBRT may be a reliable option for early stage disease.

Management of Sarcoma Metastases to the Lung

For decades, surgical resection of pulmonary metastases has been performed; despite limited randomized data, surgery is increasingly accepted as an integral part in the management of metastatic disease. Long-term results indicate resection is potentially curative with significantly improved survival following complete resection. Recurrence, however, is not uncommon with many patients undergoing repeat resection. With advancing surgical technique and adjuvant therapies, patients with high or recurrent tumor burden are increasingly afforded disease control and potential cure. In this review, the prognostic characteristics of pulmonary metastases from sarcoma, preoperative evaluation, operative technique, long-term outcomes, and management of complex patients are highlighted.

Survival and prognostic factors following pulmonary metastasectomy for sarcoma

Sarcomas are a heterogeneous group of malignancies with a marked propensity to metastasize to the lungs. Chemotherapy offers only a limited benefit in metastatic disease, whereas lung metastasectomy, in selected cases, can lead to long-term survival. Other local ablative techniques and hybrid therapies have been proposed. A multidisciplinary setting is of paramount importance for choosing the most appropriate treatment for each case. There is no randomized controlled trial providing formal evidence of the effectiveness of lung metastasectomy. Main areas of controversy concern the selection of surgical candidates, the operative approach and the role of chemotherapy. Five-year survival rates range from 15% to 50.9%, as reported mainly in retrospective case-series in which several prognostic factors were identified. In this article, the authors review the surgical management of sarcoma metastases to the lung, with a particular focus on the outcomes and prognostic factors associated with long-term survival after resection. The role of chemotherapy and other adjunctive therapies is also discussed.

Evaluation of video-assisted thoracoscopic surgery for pulmonary metastases: a meta-analysis

Background

To evaluate the evidence comparing video-assisted thoracic surgery (VATS) and open thoracotomy in the treatment of metastatic lung cancer using meta-analytical techniques.

Methods

A literature search was undertaken until July 2013 to identify the comparative studies evaluating disease-free survival rates and survival rates. The pooled odds ratios (OR) and the 95% confidence intervals (95% CI) were calculated with the fixed or random effect models.

Results

Six retrospective studies were included in our meta-analysis. These studies included a total of 546 patients: 235 patients were treated with VATS, and 311 patients were treated with open thoracotomy. The VATS and the thoracotomy did not demonstrate a significant difference in the 1-,3-,5-year survival rates and the 1-year disease-free survival rate. There were significant statistical differences between the 3-year disease free survival rate (p = 0.04), which favored open thoracotomy.

Conclusions

The VATS approach is a safe and feasible treatment in terms of the survival rate for metastatic lung cancer compared with the thoracotomy. The 3-year disease-free survival rate in the VATS group is inferior to that of open thoracotomy. The VATS approach could not completely replace open thoracotomy.

Percutaneous cryoablation of metastatic lesions from non-small-cell lung carcinoma: initial survival, local control, and cost observations

PURPOSE

To assess feasibility, complications, local tumor recurrences, overall survival (OS), and estimates of cost effectiveness for multisite cryoablation (MCA) of oligometastatic non-small-cell lung cancer (NSCLC).

MATERIALS AND METHODS

A total of 49 computed tomography- and/or ultrasound-guided percutaneous MCA procedures were performed on 60 tumors in 31 patients (19 women and 12 men) with oligometastatic NSCLC. Average patient age was 65 years. Tumor location was grouped according to common metastatic sites. Median OS was determined by Kaplan-Meier method and defined life-years gained (LYGs). Estimates of MCA costs per LYG were compared with established values for systemic therapies.

RESULTS

Total numbers of tumors and cryoablation procedures for each anatomic site were as follows: lung, 20 and 18; liver, nine and seven; superficial, 12 and 11; adrenal, seven and seven; paraaortic/isolated, two and two; and bone, 10 and seven. A mean of 1.6 procedures per patient were performed, with a median clinical follow-up of 11 months. Major complication and local recurrence rates were 8% (four of 49) and 8% (five of 60), respectively. Median OS for MCA was 1.33 years, with an estimated 1-year survival rate of approximately 53%. MCA appeared cost-effective even when added to the cost of best supportive care or systemic regimens, with an adjunctive cost-effectiveness ratio of $49,008-$87,074.

CONCLUSIONS

MCA was associated with very low morbidity and local tumor recurrence rates for all anatomic sites, and possibly increased OS. Even as an adjunct to systemic therapies, MCA appeared cost-effective for palliation of oligometastatic NSCLC.

Percutaneous cryoablation of metastatic renal cell carcinoma for local tumor control: feasibility, outcomes, and estimated cost-effectiveness for palliation

PURPOSE

To assess complications, local tumor recurrences, overall survival (OS), and estimates of cost-effectiveness for multisite cryoablation (MCA) of oligometastatic renal cell carcinoma (RCC).

MATERIALS AND METHODS

A total of 60 computed tomography- and/or ultrasound-guided percutaneous MCA procedures were performed on 72 tumors in 27 patients (three women and 24 men). Average patient age was 63 years. Tumor location was grouped according to common metastatic sites. Established surgical selection criteria graded patient status. Median OS was determined by Kaplan-Meier method and defined life-years gained (LYGs). Estimates of MCA costs per LYG were compared with established values for systemic therapies.

RESULTS

Total number of tumors and cryoablation procedures for each anatomic site are as follows: nephrectomy bed, 11 and 11; adrenal gland, nine and eight; paraaortic, seven and six; lung, 14 and 13; bone, 13 and 13; superficial, 12 and nine; intraperitoneal, five and three; and liver, one and one. A mean of 2.2 procedures per patient were performed, with a median clinical follow-up of 16 months. Major complication and local recurrence rates were 2% (one of 60) and 3% (two of 72), respectively. No patients were graded as having good surgical risk, but median OS was 2.69 years, with an estimated 5-year survival rate of 27%. Cryoablation remained cost-effective with or without the presence of systemic therapies according to historical cost comparisons, with an adjunctive cost-effectiveness ratio of $28,312-$59,554 per LYG.

CONCLUSIONS

MCA was associated with very low morbidity and local tumor recurrence rates for all anatomic sites, with apparent increased OS. Even as an adjunct to systemic therapies, MCA appeared cost-effective for palliation of oligometastatic RCC.

Repeated and aggressive pulmonary resections for leiomyosarcoma metastases extends survival

BACKGROUND

Sarcoma frequently metastasizes to the lungs, and pulmonary metastasectomy is the only treatment modality that can provide a cure for these patients. We attempted to determine the clinicopathologic features and survival determinants of a common subset of patients who undergo pulmonary metastasectomy for leiomyosarcoma.

METHODS

All patients undergoing pulmonary metastasectomy at The Brigham and Women's Hospital from 1989 to 2004 were reviewed retrospectively. Analyzed variables included number, size, pathology, and location of metastases, age, gender, location of primary tumor, disease-free interval (DFI), surgical approach, margin status, adjuvant therapy, recurrence, number of metastasectomies, and disease-free and overall survival.

RESULTS

Eighty-two patients underwent pulmonary metastasectomy for metastases from sarcoma. Leiomyosarcoma was the most common histologic finding (n = 31; 38%). Fifteen patients with leiomyosarcoma (48%) underwent repeated pulmonary metastasectomy. Patients with leiomyosarcoma were more commonly female (77% versus 43%; p = 0.031), less frequently received chemotherapy for their primary tumor (48% versus 71%, p = 0.041), and presented with fewer number of pulmonary metastases than did patients with nonleiomyosarcoma metastases (1.9 ± 1.5 standard deviation [SD] versus 3.6 ± 4.4; p = 0.033). Although there was no difference in disease-free survival, patients with leiomyosarcoma demonstrated improved overall survival compared with those with nonleiomyosarcoma metastases (70 versus 24 months; p = 0.049). In multivariate analyses, the DFI from primary tumor resection to pulmonary metastases and the DFI from pulmonary metastasectomy to second pulmonary recurrence were identified as independent predictors of survival.

CONCLUSIONS

Leiomyosarcoma is a common subset of sarcomatous pulmonary metastases that behave more indolently compared with other pulmonary metastases from sarcoma. Long-term survival is achievable with an aggressive approach toward pulmonary metastasectomy and repeated pulmonary metastasectomy.

Indications and approach to surgical resection of lung metastases

Pulmonary metastasectomy is a curative option for selected patients with cancer spread to the lungs. Complete surgical removal of pulmonary metastases can improve survival and is recommended under certain criteria. Specific issues that require consideration in a multidisciplinary setting when planning pulmonary metastasectomy include: adherence to established indications for resection, the surgical strategy including the use of minimally invasive techniques, pulmonary parenchyma preservation, and the role of lymphadenectomy.

Surgical management of pulmonary metastases

Metastasectomy is the only curative option for some patients with secondary pulmonary malignancy. Many studies suggest a survival benefit in selected patients if complete resection of pulmonary metastases is accomplished. There are several operative approaches that may be used, with the goal of complete resection and with minimal parenchymal loss. Evaluation for resection must include ascertainment of control of the primary tumor and assessment of the ability to achieve complete resection. Minimally invasive approaches may offer advantages in quality of life outcomes, with equivalent oncologic outcomes.

Pulmonary metastasectomy from soft tissue sarcomas

INTRODUCTION

Isolated pulmonary metastases from soft tissue sarcomas occur in 20-50% of these(the issue is about metastases, not lung cancer )patients, and 70% of these patients will present disease limited only to the lungs. Surgical resection is well accepted as a standard approach to treat metastases from soft tissue sarcomas isolated in the lungs, and many studies investigating this technique have reported an overall 5-year survival ranging from 30-40%. The most consistent predictor of survival in these patients is complete resection. The aim of the present study was to determine the demographics and clinical treatment-related variables associated with long-term (90-month) overall survival in patients with lung metastases undergoing pulmonary metastasectomy from soft tissue sarcomas.

METHODS

We performed a retrospective review of patients admitted in the Thoracic Surgery Department with lung metastases who underwent thoracotomy for resection following treatment of the primary tumor. Data regarding primary tumor features, demographics, treatment, and outcome were collected.

RESULTS

One hundred twenty-two thoracotomies and 273 nodules were resected from 77 patients with previously treated soft tissue sarcomas. The median follow-up time of all patients was 36.7 months (range: 10-138 months). The postoperative complication rate was 9.1%, and the 30-day mortality rate was 0%. The 90-month overall survival rate for all patients was 34.7%. Multivariate analysis identified the following independent prognostic factors for overall survival: the number of metastases resected, the disease-free interval, and the number of complete resections.

CONCLUSION

These results confirm that lung metastasectomy is a safe and potentially curative procedure for patients with treated primary tumors. A select group of patients can achieve long-term survival after lung resection.

Multidisciplinary management of metastatic sarcoma

Soft tissue sarcomas comprise a heterogeneous group of malignancies of mesenchymal origin. Although sarcomas can arise virtually anywhere, the most common primary site is the extremity. The development of metastatic disease poses a major clinical problem because it is seldom amenable to a curative treatment. However, with careful and expert multidisciplinary team selection of patients with metastatic sarcoma-balancing probability of benefit with certain toxicity-a combined multimodality approach may provide hope to a select few for prolonged survival and even cure.

Surgical treatment of metastatic disease to the lung

The presence of distant metastases usually implies disease not amenable to cure through surgical resection. In such cases, chemotherapy is the mainstay of treatment, with surgery or radiation reserved for palliative measures. However, metastases limited to the lung may be resected with resultant prolonged patient survival compared to unresectable, widely disseminated metastases. Isolated pulmonary metastases should therefore not be considered untreatable. In this review, we discuss the pathophysiology of pulmonary metastases. We outline prognostic factors associated with metastases, and propose criteria to help select patients for metastasectomy. Surgical approaches, including various open techniques and video-assisted thoracoscopy, are covered. Surgical issues, including the need for unilateral versus bilateral exploration, the extent of resection to achieve cure, the need for lymph node dissection, and the benefit of repeat operations, are discussed. Finally, we review some of the more common tumors that metastasize to the lungs, and the role of metastasectomy in their treatment. Resection of pulmonary metastases confers a survival benefit to a select group of patients so long as the primary tumor is controlled, metastases are limited to the lungs, the patient can tolerate the operation from a cardiopulmonary standpoint, and the metastases are completely resected.

Factors causing early relapse after lung metastasis surgery

Haematogenous lung metastases are usually considered a sign of widespread metastatic disease. However, in most primary cancers, the first filter for distant tumours are the lungs. In some patients, the metastatic process may stop at the lungs. In these selected patients, there are studies that have shown the benefits of metastasectomy. The objective of this paper is to analyse the morbidity and mortality of lung metastasectomy and determine the factors that predispose to early relapse. Forty-two patients operated on for lung metastases, and four were excluded as they were assessed intraoperatively to be unresectable, leaving 38 patients to be analysed. The variables analysed were: age, sex, primary tumour, disease-free interval, number of metastases, bilaterality, morbidity and mortality, relapse, reinterventions, relapse-free interval after metastasectomy and survival. The surgical technique was a posterolateral thoracotomy, and there were no perioperative deaths. Morbidity was 11% (n = 4), and surgical reintervention of the haemothorax was necessary. Survival after 1, 2 or 3 years was 87%, 61% and 25% respectively, and the percentage of relapse-free patients was 71%, 56% and 17% respectively. The main factors associated with early relapse were histological type of tumour (more relapse in sarcoma, and less in adenocarcinoma), the disease-free interval between the primary tumour and lung metastases, and the number of metastases. Surgery was required a second time in five patients who had relapsed lung metastases, but extirpation could be performed in only four patients, of whom three were relapse free after 6, 12 and 24 months respectively, and the fourth had relapsed lung metastases after 18 months. Resection of lung metastases can be performed with low morbidity and mortality. The main prognostic factors for survival are complete surgery, histological type, disease-free interval between the primary tumour and metastases, and the number of lung metastases.

Perioperative chemotherapy in patients undergoing pulmonary resection for metastatic soft-tissue sarcoma of the extremity

BACKGROUND

The benefit of chemotherapy in the treatment of primary soft-tissue sarcoma (STS) is controversial. To the authors' knowledge, few studies to date have examined the effect of chemotherapy in patients undergoing pulmonary resection for metastatic STS of the extremity.

METHODS

Between 1990 and 2005, 1897 patients with extremity STS were treated and prospectively followed at a single institution. In all, 508 patients (27%) developed lung metastases as the first site of distant recurrence, and 138 (7%) were treated with pulmonary resection.

RESULTS

Perioperative chemotherapy was administered to 53 patients (38%). Age at diagnosis and disease-free interval were significantly different between patients who received perioperative chemotherapy and those who did not, whereas sex, grade, size of the primary tumor, depth, histology, number and size of lung metastases, and rate of complete resection were not. The median postmetastasis disease-specific survival was 24 months in patients who were treated with surgery and chemotherapy compared with 33 months in patients who were treated with surgery alone (P = .19). The median postmetastasis pulmonary progression-free survival in the 2 groups was 10 months and 11 months, respectively (P = .63). Multivariate Cox proportional hazards modeling and propensity score analysis revealed no association between perioperative chemotherapy and disease-specific, overall, or pulmonary progression-free survival.

CONCLUSIONS

Although it is difficult to completely control for the effects of selection bias on outcome in this highly selected cohort of patients, data from the current study suggest that systemic chemotherapy has minimal, if any, long-term impact on the outcome of patients undergoing pulmonary resection for metastatic STS of the extremity.