Toxicity and Outcomes Associated with Surgical Cytoreduction and Hyperthermic Intraperitoneal Chemotherapy (HIPEC) for Patients with Sarcomatosis

Ibero-American Consensus for the Management of Peritoneal Sarcomatosis: Updated Review and Clinical Recommendations

Peritoneal sarcomatosis is a rare malignant disease with a poor prognosis, secondary to peritoneal dissemination of abdominopelvic soft tissue sarcomas. Its rarity, together with the characteristic histological heterogeneity and the historically poor response to systemic treatments, has prevented the establishment of widely accepted treatment criteria with curative intent. In this sense, radical cytoreductive surgery (CRS) with peritonectomy procedures and hyperthermic intraperitoneal chemotherapy (HIPEC), widely used in peritoneal carcinomatosis with excellent results, have not had the same evolutionary development in patients with peritoneal sarcomatosis. A multidisciplinary working group of experts in sarcomas and peritoneal oncological surgery established a series of recommendations based on current scientific evidence for the management of peritoneal sarcomatosis, taking into account the different histological subgroups of abdominopelvic sarcomas that can cause it depending on their origin: retroperitoneal sarcomas, uterine sarcomas, and visceral/peritoneal sarcomas of GIST (gastrointestinal stromal tumor) and non-GIST origin. This article shows the results of sarcoma experts' voting on the recommendations presented during the I Ibero-American Consensus on the Management of Peritoneal Sarcomatosis, which took place during the recent celebration of the III Hispanic-Portuguese Meeting for Updates on the Treatment of Sarcomas.

Nephrotoxicity Associated with Cytoreductive Surgery Combined with Cisplatin-Based Hyperthermic Intraperitoneal Chemotherapy for Peritoneal Malignant Disease: A Systematic Review and Meta-Analysis

Background: Cisplatin is employed in hyperthermic intraperitoneal chemotherapy (HIPEC) after cytoreductive surgery (CRS) for peritoneal surface malignancies (PSMs). The main concern regarding intraperitoneal cisplatin administration is nephrotoxicity. Numerous reports in this context are available. Our objective was to conduct a systematic review and meta-analysis to assess cisplatin-based HIPEC-related nephrotoxicity (CHRN). Methods: A systematic literature review on CHRN after CRS for the treatment of PSMs was performed. The literature search was carried out using Medline, Cochrane, and Embase. The last day of the search was 23 October 2023. PRISMA guidelines were used. A meta-analysis was then conducted. The main endpoint was the incidence of acute and chronic renal impairment after CHRN. Secondary endpoints included the potential impact of several clinical variables on the primary endpoint and a critical appraisal of the different renal impairment scales employed. Results: Our study included 26 articles with a total sample of 1473 patients. The incidence of acute kidney injury (AKI) was 18.6% (95% CI: 13.6-25%, range of true effects 3-59%). For chronic kidney disease, it was 7% (95% CI: 3-15.3%, range of true effects 1-53%). The variables that statistically influenced these results were the scale used to measure renal insufficiency, the use of nephroprotective agents, and the presence of pre-existing renal disease. Conclusions: The reported incidence of renal impairment following cisplatin-based HIPEC is highly variable. The incidence of renal failure obtained in this meta-analysis should be used as a reference for subsequent reports on this topic. Further prospective studies are warranted to establish optimal and standardized management.

Radical cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in the treatment of peritoneal sarcomatosis: Results from a reference center and considerations based on current evidence

INTRODUCTION

Peritoneal sarcomatosis is a rare disease, with multiple histological origins and poor overall prognosis. The option of radical cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is controversial. The results of a surgical team experienced in these procedures are analyzed and discussed based on the available evidence.

METHODS

Study on a prospective database of patients with peritoneal sarcomatosis who underwent CRS and HIPEC, from 2016 to 2022, in a national reference center for sarcomas and peritoneal oncological surgery, who met the established inclusion/exclusion criteria.

RESULTS

23 patients were included in the study, with a median age of 53 years (6-68). Recurrent/persistent clinical presentation predominated (78.3%). Visceral origin (including GIST and non-GIST peritoneal) accounted for 47.8% of patients, compared to 43.5% uterine and 8.7% retroperitoneal. The median PCI was 17 (3-36), with CC0 cytoreduction of 87%. Postoperative morbidity (Dindo Clavien III-IV) of 13%, with no postoperative mortality in the series. Overall survival and disease-free survival at 5 years were 64% and 34%, respectively. Histological grade was the most influential prognostic factor for survival.

CONCLUSIONS

The results of the series, with low morbidity, support the benefit of radical peritoneal oncological surgery in patients with peritoneal sarcomatosis after adequate selection, as long as it is performed in high-volume centers, experienced surgeons and expert multidisciplinary teams. However, the role of HIPEC remains to be demonstrated and pending future studies.

Defining the Values and Quality of Life of Cancer Survivors Following Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy: An International Survey Study

BACKGROUND

Advances in treatment of peritoneal surface malignancies including cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS±HIPEC) have led to long-term survivorship, yet the subsequent quality of life (QOL) and values of these patients are unknown.

PATIENTS AND METHODS

Survivors were offered surveys via online support groups. Novel items assessed how patients prioritized experience, costs, longevity, and wellbeing.

RESULTS

Of the 453 gastrointestinal/hepatobiliary (GI/HPB) surgical patients that responded, 74 underwent CRS±HIPEC and were 54±12 years old, 87% female, and 93% white. Respondents averaged 29 months from diagnosis, with a maximum survival of 20 years. With a moderate level of agreement (W = 39%), rankings of value metrics among respondents were predictable (p < 0.001). Longevity and functional independence were ranked highest; treatment experience and cost of treatment were ranked lowest (p < 0.001). Those who underwent CRS±HIPEC or other GI/HPB surgeries reported the same rank order. QOL in CRS±HIPEC survivors, both mental (M-QOL) (44±13) and physical (P-QOL) (41±11) were lower than in the general population (50±10); p < 0.001. Impairments persisted throughout survivorship, but M-QOL improved over time (p < 0.05). When comparing CRS±HIPEC with other GI/HPB cancer surgery survivors, M-QOL (43±13 versus 43±14, p = 0.85) and P-QOL (40±11 versus 42±12, p = 0.41) were similar.

CONCLUSIONS

Although CRS±HIPEC survivors experience long-term mental and physical health impairments, they were similar to those experienced by survivors of other GI/HPB cancer surgeries, and their QOL improved significantly throughout survivorship. As CRS±HIPEC survivors prioritize longevity above all other metrics, survival benefit may outweigh a temporary reduction in QOL.

Malignant adipocytic tumours: A 20‑year single‑centre retrospective study

Adipocytic tumours are the most common soft tissue neoplasms. Among them, liposarcoma is the most frequent malignant neoplasm. However, to the best of our knowledge, no previously published study has assessed the evolution and oncological prognosis of the different subtypes of liposarcoma at the retroperitoneal level compared with at other locations. The present study is a retrospective observational study in which all patients were operated on between October 2000 and January 2020 with a histological diagnosis of liposarcoma. Variables, such as age, sex, location, histological type, recurrence, type of treatment and mortality, among others, were analysed. The patients were divided into two groups: Group A (retroperitoneal location) and group B (non-retroperitoneal location). A total of 52 patients with a diagnosis of liposarcoma (17 women and 35 men) and a mean age of 57.2±15.9 years were assessed. A total of 16 patients were classified into group A and 36 into group B. The OR of recurrence was 1.5 (P=0.02) for R1 vs. R0 resection in group A. The OR of recurrence in group B for R1 vs. R0 resection was 1.8 (P=0.77), whereas for R2 vs. R0 resection, the OR was 69 (P=0.011). In conclusion, 52 cases of malignant adipocytic tumours collected during 2000-2020 were analysed with the new World Health Organization classification (updated 2020). Although its recurrence potential and capacity for distant metastasis depended on each histological type, surgical treatment with unaffected margins was the main prognostic factor for survival. The present study identified differences in relation to the survival of each histological subtype and its location, finding greater survival in dedifferentiated liposarcoma, myxoid liposarcoma and pleomorphic liposarcoma located at the extraperitoneal level than in the retroperitoneal location. Resectability was not influenced by liposarcoma location.

Management of Locally Recurrent Retroperitoneal Sarcoma in the Adult: An Updated Consensus Approach from the Transatlantic Australasian Retroperitoneal Sarcoma Working Group

BACKGROUND

Surgery is the mainstay of treatment for retroperitoneal sarcoma (RPS), but local recurrence is common. Biologic behavior and recurrence patterns differ significantly among histologic types of RPS, with implications for management. The Transatlantic Australasian RPS Working Group (TARPSWG) published a consensus approach to primary RPS, and to complement this, one for recurrent RPS in 2016. Since then, additional studies have been published, and collaborative discussion is ongoing to address the clinical challenges of local recurrence in RPS.

METHODS

An extensive literature search was performed, and the previous consensus statements for recurrent RPS were updated after review by TARPSWG members. The search included the most common RPS histologic types: liposarcoma, leiomyosarcoma, solitary fibrous tumor, undifferentiated pleomorphic sarcoma, and malignant peripheral nerve sheath tumor.

RESULTS

Recurrent RPS management was evaluated from diagnosis to follow-up evaluation. For appropriately selected patients, resection is safe. Nomograms currently are available to help predict outcome after resection. These and other new findings have been combined with expert recommendations to provide 36 statements, each of which is attributed a level of evidence and grade of recommendation. In this updated document, more emphasis is placed on histologic type and clarification of the intent for surgical treatment, either curative or palliative. Overall, the fundamental tenet of optimal care for patients with recurrent RPS remains individualized treatment after multidisciplinary discussion by an experienced team with expertise in RPS.

CONCLUSIONS

Updated consensus recommendations are provided to help guide decision-making for treatment of locally recurrent RPS and better selection of patients who would potentially benefit from surgery.

Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) in peritoneal sarcomatosis-A systematic review and meta-analysis

Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) play an important role in the treatment of various peritoneal surface malignancies, but its efficacy in peritoneal sarcomatosis (PS) remains unknown. Hence, we performed a systematic review and meta-analysis to investigate outcomes of CRS-HIPEC in PS, in accordance with PRISMA guidelines. 16 studies with a total of 320 patients were included in the meta-analysis. Pooled mean length of hospital stay after CRS-HIPEC was 16.0 days (95% CI: 12.2-19.8) and rate of serious complications was 17.4% (95% CI: 9.8-26.3). The median DFS was 12.0 months (95% CI: 8.0-16.0) and the 5-year DFS was 21.8% (95% CI: 13.2-31.7). Overall pooled median OS was 29.3 months (95% CI: 23.8-34.8), with a 5-year OS of 35.3% (95% CI: 26.3-44.8). Subgroup analysis showed that patients with CC-0 cytoreduction had a higher median OS of 34.6 months (95% CI: 23.2-45.9). Median OS for patients with a primary tumour histology of leiomyosarcoma and liposarcoma was 33.5 months (95% CI: 15.9-51.1) and 39.1 months (95% CI: 20.8-57.5) respectively. The site of recurrence was locoregional in 57.3% (95% CI: 38.9-74.8), distant in 17.3% (95% CI: 3.9-35.6), and both in 17.4% (95% CI: 5.8-32.2). In conclusion, our results suggest that CRS-HIPEC may improve outcomes in a select group of PS patients.

Multidisciplinary Management of Retroperitoneal Sarcoma: Diagnosis, Prognostic Factors and Treatment

Simple Summary

The management of retroperitoneal sarcomas can be challenging due to the variety of their presentation, histopathological types, and behaviours. This literature review provides a comprehensive and practical overview of the management of retroperitoneal sarcomas, focusing on diagnostic challenges, prognostic factors, multidisciplinary aspects of treatment and new research perspectives.

Abstract

Retroperitoneal sarcomas (RPS) are rare cancers whose management can be challenging due to various presentation patterns, multiple organ involvement, and a high local and distant recurrence rate. Histopathology and prognostic factors analysis are essential to predict the behaviour of the disease and plan the best therapeutic strategy. To date, surgery is still the main therapeutic option that guarantees a chance of cure from the primary disease. While chemotherapy and radiotherapy seem to be good options for controlling metastatic and recurrent irresectable disease, their role in the treatment of primary RPS remains unclear. This literature review aims to provide a comprehensive overview of the multidisciplinary aspects of RPS management in high-volume centres, summarising the diagnostic path, the prognostic factors, and the most suitable therapeutic options.

Multimodal Therapy Including Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy Can Result in Long-term Disease-free Survival in Pediatric Desmoplastic Small Round Cell Tumor With Extraperitoneal Disease

Desmoplastic small round cell tumor is a rare sarcoma with 5-year overall survival of 15%. An 8-year-old female presented with diffuse abdominal/pelvic desmoplastic small round cell tumor including numerous liver metastasis. She underwent neoadjuvant chemotherapy followed by cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC). Residual disease was found shortly after CRS/HIPEC which was resected, followed by whole abdomen/pelvic radiation and autologous hematopoietic cell transplant. Previous papers have reported dismal survival in patients with liver metastasis and residual disease arguing against CRS/HIPEC. Our patient remains disease-free over 6 years after completing therapy indicating long-term survival is achievable with aggressive multimodal therapy.

Cytoreductive Surgery with Hyperthermic Intraperitoneal Chemotherapy in Peritoneal Sarcomatosis

Cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) is the treatment most likely to achieve prolonged survival for peritoneal surface disease from various primaries, yet management of peritoneal sarcomatosis is controversial as a result of the propensity of sarcomas for hematogenous spread and the paucity of effective chemotherapy. Therefore, we reviewed our experience in patients with sarcomatosis. A retrospective analysis of a prospective database of 990 procedures was performed. Eastern Cooperative Oncology Group, age, type of primary, resection status, morbidity, mortality, and outcomes were reviewed. Over 20 years, 17 cytoreductions for sarcomatosis were performed. After excluding patients with gastrointestinal stromal tumor or uterine leiomyosarcoma, 10 procedures performed in seven patients remained. Median follow-up was 84.8 months. R0/1 resection was achieved in 60 per cent. The 30-day morbidity was 50 per cent; no operative mortality rate was observed. R2 resection had no long-term survivors. The reason for death was peritoneal recurrence in 57 per cent. Median survival was 21.6 months and five-year survival was 43 per cent. Median survival for patients with peritoneal sarcomatosis treated with CRS-HIPEC is similar with the historical reported survival before introducing chemoperfusion. Although a complete cytoreduction is related to improved survival, the role of HIPEC in these patients is unknown. A multi-institutional review will help define the role of CRS-HIPEC in this population.

Long-term survival is possible using cytoreductive surgery plus HIPEC for sarcomatosis-Case report of 2 patients

BACKGROUND

Sarcomatosis results from the dissemination of cells from an abdominal or pelvic primary sarcoma to the peritoneal surfaces. In most patients this is a lethal condition.

METHODS

The clinical and radiologic features of two patients with sarcomatosis were reviewed. Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (HIPEC) were used for treatment. Current status of these two patients was available.

RESULTS

These two patients had a large extent of disease. In one, a myxoid sarcoma filled the pelvis. In another, all quadrants of the abdomen and pelvis were involved by peritoneal metastases from a uterine leiomyosarcoma. The grade of these two tumors was moderate and low. Surgical resection of all sarcomatosis was performed and this was followed by HIPEC. Clinical and radiologic follow-up at 37 and 58 months after complete cytoreduction show no evidence of disease.

CONCLUSION

An effort to identify patients with sarcomatosis who are predicted to have a complete cytoreduction should occur when these patients are evaluated. Patients with a complete resection and a sarcoma-specific HIPEC may have prolonged disease-free survival. No other treatments for these patients have been described.

A Simplified Peritoneal Sarcomatosis Score for patients treated with cytoreductive surgery and hyperthermic intraperitoneal chemotherapy

Background

With the introduction of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC), long-term survival can be achieved in selected patients with peritoneal surface malignancy. In patients with peritoneal sarcomatosis (PS), CRS/HIPEC remains a topic of debate. It is important that patient selection and outcome be improved with a tool that better predicts survival in such patients. To this end, we devised a Simplified Peritoneal Sarcomatosis Score (SPSS) adopted from the previously-described peritoneal surface disease severity score (PSDSS).

Methods

Patients were included if they were diagnosed with PS and underwent CRS/HIPEC with intended complete cytoreduction between 2007 and 2017. To calculate SPSS, we recorded symptoms (none =0, present =1), peritoneal carcinomatosis index (PCI) (≤10=0, >10=1), and grade of tumor (low =0, high =1). Thus, SPSS ranged from 0 to 3. SPSS-L (low) included patients with score of 0-1; SPSS-H (high) included patients with scores 2-3. Survival curves were generated using Kaplan-Meier method according to the two tiers of SPSS.

Results

Twenty-five patients were included. Mean age was 51.84±10.75 years. Median follow-up was 18 months. Compared to SPSS-H, SPSS-L patients had a longer median overall survival (OS) (36±16 vs. 16±6 months, respectively; P=0.021) and a longer median disease-free survival (DFS) (36±16 vs. 16±6 months, respectively; P<0.001). On multivariate analysis, advanced disease (SPSS-H) was an independent predictor of OS (P=0.020) and DFS (P=0.018).

Conclusions

SPSS can be used as a tool for patient selection for surgery, prognosis prediction, and stratification into clinical trials of PS patients.

Cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) for disseminated intra-abdominal malignancies in children-a single-institution experience

PURPOSE

Our purpose was to present our institutional experience with performing complete cytoreduction surgery and heated intraoperative chemotherapy (CRS-HIPEC) for children with disseminated intraabdominal malignancies, guided by a leading international center performing CRS-HIPEC in children.

METHODS

Retrospective chart review of all cases of CRS-HIPEC in children in our institution, examining diagnosis, preoperative management, operative management, postoperative treatment, short term outcome including length of stay and complications, and long term outcome including survival and recurrence of disease.

RESULTS

9 children underwent CRS-HIPEC over 48months. The mean age of the patients was 8years. Tumors were: rhabdomyosarcoma (RMS), mesothelioma, Sertoli-Leydig, desmoplastic small round cell tumor, colon carcinoma and Wilms' tumor. Most patients received intraperitoneal cisplatin. Short term outcome was very good with median length of hospital stay of 13days and low rate of complications. Seven patients were alive at last follow up. Five patients developed a recurrent disease. Recurrence was intraabdominal in two of these patients.

CONCLUSIONS

CRS-HIPEC for children with disseminated intraabdominal malignancies performed in a dedicated institution and with guidance by a leading international center can be performed safely.

TYPE OF STUDY

Treatment study.

LEVEL OF EVIDENCE

IV.

Multimodality Treatment of Desmoplastic Small Round Cell Tumor: Chemotherapy and Complete Cytoreductive Surgery Improve Patient Survival

Purpose: Desmoplastic small round cell tumor (DSRCT), which harbors EWSR1-WT1 t(11;22)(p13:q12) chromosomal translocation, is an aggressive malignancy that typically presents as intra-abdominal sarcomatosis in young males. Given its rarity, optimal treatment has not been defined.Experimental Design: We conducted a retrospective study of 187 patients with DSRCT treated at MD Anderson Cancer Center over 2 decades. Univariate and multivariate regression analyses were performed. We determined whether chemotherapy, complete cytoreductive surgery (CCS), hyperthermic intraperitoneal cisplatin (HIPEC), and/or whole abdominal radiation (WART) improve overall survival (OS) in patients with DSRCT. Critically, because our institutional practice limits HIPEC and WART to patients with less extensive, potentially resectable disease that had benefited from neoadjuvant chemotherapy, a time-variant analysis was performed to evaluate those adjunct treatment modalities.Results: The pre-2003 5-year OS rate of 5% has substantially improved to 25% with the advent of newer chemotherapies and better surgical and radiotherapy techniques (HR, 0.47; 95% CI, 0.29-0.75). Chemotherapy response (log rank P = 0.004) and CCS (log rank P < 0.0001) were associated with improved survival. Although WART and HIPEC lacked statistical significance, our study was not powered to detect their potential impact upon OS.Conclusions: Improved 3- and 5-year OS were observed following multidisciplinary treatment that includes Ewing sarcoma (ES)-based chemotherapy and complete tumor cytoreductive surgery, but few if any patients are cured. Prospective randomized studies will be required to prove whether HIPEC or WART are important. In the meantime, chemotherapy and CCS remain the cornerstone of treatment and provide a solid foundation to evaluate new biologically targeted therapies. Clin Cancer Res; 24(19); 4865-73. ©2018 AACR.

Cytoreductive Surgery in Combination with HIPEC in the Treatment of Peritoneal Sarcomatosis

Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is an effective treatment for peritoneal carcinomatosis, but it has been debated for peritoneal sarcomatosis. The purpose of the study is the presentation of perioperative and long-term results of CRS and hyperthermic intraoperative intraperitoneal chemotherapy in patients with peritoneal sarcomatosis. Retrospective study in a prospectively maintained database of 20 patients that underwent 29 CRS + HIPEC for peritoneal sarcomatosis. Clinical and histopathologic variables were correlated to survival. Complete cytoreduction was possible in 86.2% of the cases. The hospital mortality and morbidity rate were 0 and 20.7%, respectively. The median follow-up was 26 months, and recurrence was recorded in 20 cases (69%). The median and 5-year survival was 55 ± 13 (34-58) months and 43%, respectively. Prior surgical score (PSS) was the single variable related to survival (p = 0.018). The histologic subtype of the tumor was related to recurrence (p < 0.001). CRS and HIPEC in peritoneal sarcomatosis may offer a survival benefit in selected patients with low hospital mortality. The variety of histologic types of sarcomatosis has not made possible the identification of subgroups of patients that may be offered significant benefit by CRS and HIPEC. Further studies are required.

Desmoplastic Small Round Cell Tumor Treated with Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy: Results of a Phase 2 Trial

BACKGROUND

Desmoplastic small round cell tumor (DSRCT) is a rare sarcoma that primarily affects adolescents and young adults. Patients can present with many peritoneal implants. We conducted a phase 2 clinical trial utilizing cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) with cisplatin for DSRCT and pediatric-type abdominal sarcomas.

PATIENTS AND METHODS

A prospective cohort study was performed on 20 patients, who underwent CRS-HIPEC procedures, with cisplatin from 2012 to 2013. All patients were enrolled in the phase 2 clinical trial. Patients with extraabdominal disease and in whom complete cytoreduction (CCR0-1) could not be achieved were excluded. All outcomes were recorded.

RESULTS

Fourteen patients had DSRCT, while five patients had other sarcomas. One patient had repeat HIPEC. Patients with DSRCT had significantly longer median overall survival after surgery than patients with other tumors (44.3 vs. 12.5 months, p = 0.0013). The 3-year overall survival from time of diagnosis for DSRCT patients was 79 %. Estimated median recurrence-free survival (RFS) was 14.0 months. However, RFS for patients with DSRCT was significantly longer than for non-DSRCT patients (14.9 vs. 4.5 months, p = 0.0012). Among DSRCT patients, those without hepatic or portal metastases had longer median RFS than those with tumors at these sites (37.9 vs. 14.3 months, p = 0.02). In 100 % of patients without hepatic or portal metastasis, there was no peritoneal disease recurrence after CRS-HIPEC.

CONCLUSIONS

Complete CRS-HIPEC with cisplatin is effective in select DSRCT patients. DSRCT patients with hepatic or portal metastasis have poorer outcomes.

The Impact of Early Recurrence on Quality of Life after Cytoreduction with HIPEC

Improved oncological outcomes after cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) in highly selected patients have been well documented. The extensive nature of the procedure adversely affects quality of life (QoL). The aim of this study is to longitudinally evaluate QoL following CRS/HIPEC. This is a retrospective review of a prospectively maintained database of patients with peritoneal malignancies undergoing CRS/HIPEC. Clinicopathological data, oncologic outcomes, and QoL were analyzed preoperatively and post-operatively at 2 weeks, and 1, 3, 6, and 12 months. The Functional Assessment of Cancer Therapy-Colorectal instrument was used to determine changes in QoL after CRS/HIPEC and the impact of early recurrence (<12 months) on QoL. Thirty-six patients underwent CRS/HIPEC over 36 months. The median peritoneal cancer index score was 18 and the completeness of cytoreduction-0/1 rate was 97.2 per cent. Postoperative major morbidity was 16.7 per cent with one perioperative death. Disease-free survival was 12.6 months in patients with high-grade tumors versus 31.0 months in those with low-grade tumors (P = 0.03). QoL decreased postoperatively and improved to baseline in six months. Patients with early recurrence had a decrease in global QoL compared with preoperative QoL at 6 (P < 0.03) and 12 months (P < 0.05). This correlation was not found in patients who had not recurred. Patients who undergo CRS/HIPEC have a decrease in QoL that plateaus in 3 to 6 months. Early recurrence adversely impacts QoL at 6 and 12 months. This study emphasizes the importance of patient selection for CRS/HIPEC. The expected QoL trajectory in patients at risk for early recurrence must be carefully weighed against the potential oncological benefit of CRS/HIPEC.

Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy for gastric cancer and other less common disease histologies: is it time?

Gastric cancer is the fourth most commonly diagnosed cancer worldwide, and once spread to the peritoneum, has a 5-year survival of less than 5%. Recent years have demonstrated advances in the use of cytoreductive surgery (CRS) in combination with heated intraperitoneal chemotherapy (HIPEC) for the treatment of peritoneal carcinomatosis due to various malignancies. The frequent desmoplastic stroma and poor vascularization impeding drug delivery particularly in the diffuse form of gastric cancer is thought to provide a sound rationale for a regionalized treatment approach in this disease. Here, we seek to review the available data to define the role of CRS and HIPEC in gastric cancer metastatic to the peritoneal surface, and furthermore, analyze the use of CRS and HIPEC in malignancies less commonly treated with the regionalized perfusion approach.

Palliative cytoreductive surgery and hyperthermic intraperitoneal chemoperfusion: current clinical practice or misnomer?

Cytoreductive surgery and hyperthermic intraperitoneal chemoperfusion (CRS/HIPEC) is being used more and more frequently for the management of peritoneal carcinomatosis. Despite significant improvements in oncologic outcomes and the risk of complications and mortality, CRS/HIPEC remains one of the most morbid treatments offered for advanced cancers. Consequently CRS/HIPEC is still considered controversial by many, even in the setting of cancers that are potentially curable. However, as high volume surgical oncologists become more experienced with CRS/HIPEC, the potential role of "palliative CRS/HIPEC" in the management of peritoneal carcinomatosis is being raised. Given the often limited survival benefit expected after CRS/HIPEC, understanding the impact of the treatment on quality of life (QOL) needs to be an essential part of the decision to proceed and is critical to optimizing recovery afterwards. This article reviews the potential definitions of "palliative CRS/HIPEC" in various clinical contexts and describes the current state of the QOL experience after CRS/HIPEC.

Cytoreductive Surgery plus Hyperthermic Intraperitoneal Chemotherapy for Management of Peritoneal Sarcomatosis: A Preliminary Single-Center Experience from Saudi Arabia

Aim. To report our preliminary single-center experience with cytoreductive surgery (CRS) plus hyperthermic intraperitoneal chemotherapy (HIPEC) for management of peritoneal sarcomatosis (PS). Methods. Eleven patients were retrospectively analyzed for perioperative details. Results. Cytoreduction completeness (CC-0/1) was achieved in all patients with median peritoneal cancer index (PCI) of 14 ± 8.9 (range: 3-29). Combination cisplatin + doxorubicin HIPEC chemotherapy was used in 6 patients. Five patients received intraoperative radiation therapy (IORT). The median operative time, estimated blood loss, and hospital stay were 8 ± 1.4 hours (range: 6-10), 1000 ± 250 mL (range: 700-3850), and 11 ± 2.4 days (range: 7-15), respectively. Major postoperative Clavien-Dindo grade III/IV complications occurred in 1 patient and none developed HIPEC chemotherapy-related toxicities. The median overall survival (OS) and disease-free survival (DFS) after CRS + HIPEC were 28.3 ± 3.2 and 18.0 ± 4.0 months, respectively. The median follow-up time was 12 months (range: 6-33). Univariate analysis of several prognostic factors (age, gender, PS presentation/pathology, CC, PCI, HIPEC chemotherapy, and IORT) did not demonstrate statistically significant differences of OS and DFS. Conclusion. CRS + HIPEC appear to be feasible, safe, and offer survival oncological benefits. However, definitive conclusions cannot be deduced.

Cytoreductive Surgery and HIPEC as a Treatment Option for Laparoscopic Resection of Uterine Leiomyosarcoma with Morcellation: Early Results

BACKGROUND

A new and frequently utilized treatment option for symptomatic uterine leiomyoma is laparoscopic resection with morcellation so the specimen can be extracted through a small abdominal incision or through the vagina. Some of these tumors (approximately 0.2 %) have malignant foci of uterine leiomyosarcoma (ULMS) that is widely disseminated in the process of resection. These patients are in need of effective additional treatments.

METHODS

Patients with ULMS were treated with a standardized cytoreductive surgery (CRS), hyperthermic perioperative chemotherapy (HIPEC), and early postoperative intraperitoneal chemotherapy (EPIC) specifically designed for sarcomatosis. Distribution of disease by Peritoneal Cancer Index was recorded by preoperative computed tomography or magnetic resonance imaging and at the time of CRS. Completeness of cytoreduction score was determined after completion of CRS. Morbidity and mortality, as well as interval to start systemic chemotherapy, were prospectively recorded.

RESULTS

Six patients with disseminated ULMS after morcellation or slicing underwent CRS and HIPEC plus EPIC. All six patients had complete visible clearing of sarcoma prior to perioperative chemotherapy. Early intervention after morcellation was associated with a lesser extent of disease. No serious morbidity or mortality was observed in early referral patients, and patients eligible for systemic chemotherapy were treated with perioperative chemotherapy within 6 weeks of the CRS.

CONCLUSIONS

The future use of laparoscopic resection of ULMS with morcellation is currently under debate. However, patients after laparoscopic resection and morcellation have CRS and HIPEC plus EPIC as a treatment option. Results regarding short-term benefit are suggested by these early data, especially with early referral.

Debulking surgery and hyperthermic intraperitoneal chemotherapy in the management of a recurrent aggressive uterine myxoid leiomyosarcoma with peritoneal dissemination

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A rare case of recurrent peritoneal sarcomatosis (PS) arising from aggressive uterine myxoid leiomyosarcoma was described.

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Cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (HIPEC) has the potential to improve outcomes in PS from uterine sarcoma.

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Careful patient selection for cytoreductive surgery with HIPEC is important to achieve better outcomes in PS.

Cytoreductive surgery and Hyperthermic Intraperitoneal Chemotherapy (HIPEC) for children, adolescents, and young adults: the first 50 cases

BACKGROUND

Extensive peritoneal metastatic disease is rare in children. Although usually manifested as carcinomatosis in adults, sarcomatosis is more common in children. The authors began a pediatric hyperthermic intraperitoneal chemotherapy (HIPEC) program, and this report describes their initial results from the first 50 pediatric, adolescent, and young adult patients.

METHODS

A single-institution, retrospective study investigated the first 50 cytoreductive surgeries and HIPEC by one surgeon for patients 3-21 years of age. The HIPEC was added to chemotherapy and radiotherapy treatment. Demographics, outcome, and complications were recorded.

RESULTS

The median follow-up period for the surviving patients was 21.9 months. The most common diagnoses were desmoplastic small round cell tumor (n = 21), rhabdomyosarcoma (n = 7), mesothelioma (n = 4), and other carcinoma (n = 17). Multivariate analysis showed that patients treated with HIPEC and an incomplete cytoreduction had a greater risk for recurrence than those who had a complete cytoreduction (p = 0.0002). The patients with a higher peritoneal cancer index (PCI) (i.e., a large tumor burden) had a median overall survival (OS) time of 19.9 months relative to the patients with a lower PCI score, who had a median OS of 34 months (p = 0.049). The patients without complete cytoreduction had a median OS of 7.1 months compared with 31.4 months for the patients with complete cytoreduction (p = 0.012). No perioperative mortalities occurred. The incidence of major complications was 28 %.

CONCLUSION

Cytoreductive surgery and HIPEC with a programmatic approach for patients 3-21 years of age is unique. The best outcome was experienced by patients with desmoplastic small round cell tumor and those with complete cytoreduction. Complete cytoreduction for patients without disease outside the abdominal cavity at the time of surgery affords the best outcome.

The feasibility of administering varying high-dose consolidation hyperthermic intraperitoneal chemotherapy with carboplatin in the treatment of ovarian carcinoma

OBJECTIVES

Hyperthermic intraperitoneal chemotherapy (HIPEC) is an intriguing method of delivery wherein the cytotoxic agent is continuously heated and circulated throughout the peritoneum in an attempt to bolster drug efficacy. Despite HIPEC's potential, ascertaining the optimal dose without compromising patient tolerability remains indeterminate.

METHODS

We retrospectively evaluated 52 advanced stage ovarian cancer patients who were treated with consolidation HIPEC with carboplatin at varying doses (e.g., AUC 6, 8 or 10) subsequent to optimal debulking surgery and the attainment of a clinical complete response to their primary chemotherapy regimen. The following patient and operative characteristics were abstracted: demographics, surgery and pathology data, chemotherapy regimen, intraoperative results, toxicity, postoperative complications, length of hospital stay and survival data.

RESULTS

Twelve patients received HIPEC carboplatin at an AUC 6, 15 subjects were treated with carboplatin at an AUC 8 and 25 underwent carboplatin at an AUC 10. There were no intraoperative complications during the administration of HIPEC; mean estimated blood loss was 50 mL and length of hospital stay was 1.65 days. In the overall study population, 5 patients developed grade 3/4 anemia and 33 subjects exhibited grade ≤2 thrombocytopenia and neutropenia. Thirteen patients also developed grade ≤2 nausea on postoperative day 1, which was successfully addressed with anti-emetic therapy; there were no hospital readmissions.

CONCLUSIONS

The results from the current evaluation suggest that consolidation hyperthermic intraperitoneal chemotherapy with carboplatin is both feasible and reasonably tolerated, even at an AUC of 10. However, additional, randomized study of this procedure incorporating chemotherapy dose escalation with a more extensive patient population is warranted.

The role of hyperthermic intraperitoneal chemotherapy (HIPEC) and isolated perfusion (ILP) interventions in sarcoma

Locally advanced sarcomas in the extremity and in the retroperitoneum/abdominal cavity (peritoneal sarcomatosis, PS) can be managed administering chemotherapy locally using isolated limb perfusion (ILP) and hyperthermic intraperitoneal chemotherapy (HIPEC), respectively. In this review, the authors discuss the pros and cons of the use of these locoregional therapies in locally advanced soft tissue sarcoma, with a view to establishing their role in the multidisciplinary approach to these difficult diseases.

Quality of life after cytoreductive surgery and hyperthermic intra-peritoneal chemotherapy for peritoneal carcinomatosis: A systematic review and meta-analysis

OBJECTIVE

To review the effect of cytoreductive surgery (CRS) and hyperthermic intra-peritoneal chemotherapy (HIPEC) on health-related quality of life (HRQOL) in patients with peritoneal carcinomatosis.

BACKGROUND

CRS and HIPEC is increasingly performed with curative intent for peritoneal carcinomatosis. Significant morbidity rates are reported in the context of limited life-expectancy, necessitating accurate post-operative HRQOL outcome data.

METHODS

A systematic review of clinical studies published after January 2000 was performed using strict eligibility criteria. Key outcomes measures were post-operative HRQOL compared to pre-operative levels and reference populations. Quality appraisal and data tabulation were performed using pre-determined forms. Data were synthesised by narrative review and random-effects meta-analysis. Tau2 and I2 values and Funnel plots were analysed for consistency and bias.

RESULTS

15 studies (1583 patients) were included. HRQOL declines at the 3-4 month time-point before becoming similar or better compared to pre-operative levels at 1 year. The pooled-effects of combined post-operative functional assessment of cancer therapy and European organisation for research and treatment quality of life questionnaire scores were significantly improved from baseline on overall health status (p=0.001) and emotional health (p=0.001). Physical health (p=0.83), social health (p=0.48) and functional health (p=0.24) remain similar. HRQOL after 1 year is less clear, but benefits may persist up to 5 years especially on overall and physical health domains. Evidence is conflicted and inconclusive on HRQOL compared to reference populations. Levels of consistency and bias were acceptable.

CONCLUSIONS

CRS and HIPEC for peritoneal carcinomatosis can confer small to medium benefits for HRQOL. These results should be interpreted with in caution due to the small studies and absence of more randomised controlled trials.

Quality of life after cytoreductive surgery and intraoperative hyperthermic intraperitoneal chemotherapy for peritoneal surface malignancies: a systematic review

BACKGROUND

Cytoreductive Surgery (CRS) accompanied by Hyperthermic Intraperitoneal Chemotherapy (HIPEC) is a promising technique in the treatment of peritoneal metastatic disease. The complexity and the potential adverse effects of the procedure can significantly affect patients' Quality of Life (QoL). Few studies have assessed the impact of CRS + HIPEC in patients' QoL using structured and validated tools. This is a systematic review of the currently available published data, investigating the QoL after performing CRS + HIPEC for tumours of varying primary origin.

METHODS

We performed a systematic review of the studies indexed in PubMed database until July 2014, using as key phrase "quality of life" and "intraperitoneal chemotherapy", including studies using only validated questionnaires for assessing quality of life parameters.

RESULTS

20 studies were identified that matched the criteria set. The results of these studies, although of significant heterogeneity, clearly demonstrate that although overall QoL scores drop in the immediate postoperative period, at an average of 3 months post procedure they recover to 80%-100% or even exceed baseline values. Furthermore, between 6 and 12 months postoperatively, overall QoL is improved in survivors compared to pre-operative status.

CONCLUSIONS

CRS and HIPEC is feasible as a treatment modality in selected patients with peritoneal metastatic disease and can preserve or even improve patients' overall quality of life.

Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy in the management of recurrent high-grade uterine sarcoma with peritoneal dissemination

OBJECTIVE

Peritoneal sarcomatosis from primary uterine sarcoma (US) is a rare condition. Conventional therapeutic modalities have failed to improve survival and outcomes among patients with high-grade US with extrapelvic spread. Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) has shown improved outcomes for peritoneal carcinomatosis from other epithelial primaries with similar clinical presentation. We report our experience applying this treatment in 3 patients with recurrent high-grade US with peritoneal dissemination.

STUDY DESIGN

This retrospective review of a prospective database of 378 patients with peritoneal dissemination of cancer treated with CRS/HIPEC identified 3 patients with recurrent high-grade US. Follow-up for disease progression was carried out by physical examination and computed tomography scan of the chest, abdomen, and pelvis.

RESULTS

Two leiomyosarcomas and 1 adenosarcoma with sarcomatous overgrowth were identified. Two of the 3 had failed standard treatment with surgery and systemic chemotherapy before CRS/HIPEC was performed. Follow-up ranged from 34 to 140 months. All 3 patients are alive, 2 with no evidence of disease (NED), and 1 alive with disease. Adramycin/cisplatin was used for HIPEC in 1 case (140 months with NED), whereas melphalan was used in the other 2 cases (53 months alive with disease, 34 months with NED). Two patients underwent 1 CRS/HIPEC, whereas 1 required 3 CRS/HIPEC due to disease recurrence.

CONCLUSION

CRS/HIPEC shows promise as a treatment modality for the management of selected patients with recurrent high-grade US with peritoneal dissemination. Further studies are warranted.

Complete cytoreduction and HIPEC improves survival in desmoplastic small round cell tumor

BACKGROUND

Desmoplastic small round cell tumor (DSRCT) is a rare tumor of adolescents and young adults. Less than 100 cases per year are reported in North America. Extensive peritoneal metastases are characteristic of this disease. We performed cytoreductive surgery and hyperthermic peritoneal perfusion with chemotherapy (HIPEC) using cisplatin (CDDP) for DSRCT.

METHODS

A retrospective cohort study was performed on 26 pediatric and adult patients who underwent cytoreduction/HIPEC using CDDP for DSRCT at a single cancer center. Neoadjuvant chemotherapy, adjuvant chemotherapy, and postoperative enteral nutrition were given to all patients. Postoperative radiation therapy was given to most patients. Follow-up was from 6 months to 6 years. Outcome variables were evaluated for disease-free and overall survival (OS).

RESULTS

Five patients (19 %) were less than 12 years of age at surgery. Patients who had disease outside the abdomen at surgery had a larger risk of recurrence or death than those who did not (p = 0.0158, p = 0.0393 time from surgery to death respectively). Age, liver metastasis, and peritoneal cancer index level did not significantly predict disease-free or OS. Patients who had CR0 or CR1 and HIPEC had significantly longer median survival compared with patients who had HIPEC and CR2 cytoreduction (63.4 vs. 26.7 months).

CONCLUSIONS

HIPEC may be an effective therapy for children and young adults with DSRCT. Patients with DSRCT require complete cytoreduction before HIPEC to optimize outcome. Patients with DSRCT and disease outside the abdomen at the time of surgery do not benefit from HIPEC.

Peritoneal sarcomatosis in pediatric malignancies

Peritoneal sarcomatosis (PSC) is defined as peritoneal involvement of multiple sarcomatous tumors. Desmoplastic small round cell tumors (DSRCT) and rhabdomyosarcomas are the most common pediatric PSC cases. PSC has been treated with chemotherapy and mainly palliative surgery, but long-term outcome has been poor. New imaging technologies have improved the evaluation of disease extent and patterns of peritoneal dissemination, and cytoreductive surgery followed by hyperthermic intraperitoneal chemotherapy (HIPEC) is being evaluated as a treatment option to prolong remission in pediatric patients. We will review the clinical characteristics, potential biologic mechanisms, radiographic characteristics, and potential therapies for pediatric PSC patients.

Toxicity of hyperthermic intraperitoneal chemotherapy (HIPEC) in pediatric patients with sarcomatosis/carcinomatosis: early experience and phase 1 results

BACKGROUND

Intra-abdominal metastasis is a rare form of tumor dissemination in children. Complete surgical resection is usually deemed impossible. Children are frequently offered palliative care only. We adopted an aggressive approach for these cases which includes removal of dozens to hundreds of tumor nodules followed by perfusion of the abdominal cavity with hyperthermic chemotherapy (HIPEC) with a curative intent.

METHODS

We evaluated toxicity in 23 children and young adults undergoing 27 HIPEC procedures using cisplatin. Disease diagnoses included rhabdomyosarcoma (RMS), non-RMS soft tissue sarcoma, (NRSTS), desmoplastic small round cell tumor, (DSRCT), mesothelioma, Wilms tumor, melanomatosis, and adenocarcinoma. Patients underwent cytoreductive surgery followed by cisplatin at 40.5-41 °C, for 90 minutes. A subset of these patients was enrolled on our phase 1 study and as part of dose escalation cohort received 150 mg/m(2) of cisplatin. All toxicities were recorded.

RESULTS

Maximum tolerated dose was 100 mg/m(2). Dose limiting toxicity was grade 3 renal failure. In five of 27, 18% had grade 3 or higher renal failure. One patient developed a subclinical decrease in hearing and there were 2 grade 3 hematologic toxicities, 2 grade 3 hepatic toxicities, and one grade 3 ileus. One patient suffered grade3 cardiotoxicity. There were no operative/perioperative mortalities. Surgical complications occurred in 5/27 (18%) of patients. With a follow-up of 6-60 months, seven patients (26%) had no recurrence.

CONCLUSIONS

HIPEC is reasonably tolerated in pediatric patients with extensive abdominal metastasis. More study is needed to determine for which histologies HIPEC is most efficacious.

Current diagnosis and management of retroperitoneal sarcoma

BACKGROUND

Retroperitoneal sarcomas are rare neoplasms that often present with multivisceral involvement. Treatment for these tumors requires careful decision making requiring a combination of surgery, chemotherapy, and radiation therapy.

METHODS

We reviewed the scientific literature pertaining to the diagnosis and management of retroperitoneal sarcomas. We also identify recent developments in treatment and discuss future trends in the care of patients with this disease.

RESULTS

Retroperitoneal tumors often present as large, locally advanced lesions. Evaluation of these tumors requires careful consideration of a multimodality approach. Retrospective data and historical prospective series have demonstrated the survival benefit of radical resection for these tumors with en bloc resection of involved structures. Compartmental resections in the retroperitoneum along with debulking of high-grade disease and regional therapy are controversial approaches with significant morbidity that can lead to long-term survival. The application of neoadjuvant and adjuvant therapies in select tumor histologies may improve local control and survival.

CONCLUSIONS

The management of retroperitoneal sarcomas requires a multidisciplinary approach and is best accomplished at high-volume centers specializing in the care of patients with these complex malignancies. Current data suggest that radical resection remains the only chance for cure and that chemotherapy and radiation therapy may confer a survival benefit.

Paclitaxel-eluting polymer film reduces locoregional recurrence and improves survival in a recurrent sarcoma model: a novel investigational therapy

BACKGROUND

Locoregional recurrences occur in up to 50% of patients after macroscopically complete (R0/R1) resections of abdominal, pelvic, and retroperitoneal sarcomas. Efficacy of a drug-eluting polymer film in reducing locoregional recurrence rates was assessed in a murine recurrent sarcoma model.

METHODS

Poly(glycerol monostearate-co-caprolactone) polymer films were synthesized with and without 300 μg paclitaxel (Pax-film and unloaded film). Cytotoxicity was assessed against CS-1 (human chondrosarcoma) cells in vitro and in vivo in nude mice. Following R0/R1 resection of primary subcutaneous tumors, mice were blindly randomized to: (1) Pax-film implant, (2) unloaded film implant, (3) paclitaxel 300 μg IV (Pax IV), or (4) no other therapy ("untreated"). Locoregional recurrence, overall survival (OS), and tumor mitotic index were evaluated.

RESULTS

Pax-films, but not unloaded films, reduced CS-1 viability in vitro for >50 days (P < 0.001). In vivo, locoregional recurrence was observed in 2 of 12 Pax-film mice (17%), 9 of 13 unloaded film mice (69%), 8 of 9 Pax IV mice (89%), and 7 of 8 untreated mice (88%) (P < 0.01). Median OS was 81, 64, 48, and 56 days, respectively. Paclitaxel levels in local tissues were 50- to 300-fold greater in Pax-film mice compared with Pax IV mice. Tumor mitotic index adjacent to Pax-films was significantly lower than adjacent to unloaded films.

CONCLUSIONS

Tumor bed implantation of Pax-films after R0/R1 resection is superior to Pax IV as evidenced by reduced locoregional recurrence and improved OS in a murine recurrent sarcoma model. Continuous local drug exposure via polymer films represents a potentially novel approach for treatment of locally aggressive sarcomas.

Intraperitoneal hyperthermic chemotherapy: an evolving paradigm for the treatment of peritoneal surface malignancies

Unfortunately, advanced colorectal cancer is often present at the time the disease is diagnosed. Many intra-abdominal malignancies spread throughout the peritoneal cavity, which is known as carcinomatosis. Peritoneal carcinomatosis is uniformly a terminal disease with a median survival of 6 months. Systemic chemotherapy is palliative and generally provides limited improvement in survival. Conventional surgery has typically been limited to ileostomy, colostomy or intestinal bypass procedures. Cytoreductive surgery alone has long been used to treat macroscopic disease, with limited success. However, cytoreductive surgery combined with intraperitoneal hyperthermic chemotherapy (IPHC) has evolved into a novel approach for peritoneal surface malignancy. IPHC was initially described in a canine model by Spratt. Although the first clinical series of peritoneal perfusion were small, Japanese trials, which utilized IPHC for prophylaxis in patients with gastric adenocarcinoma, Fujimoto was the first to report an improvement in survival for established gastric cracinomatosis. This early work provided the proof-of-principle for what has evolved into current management with aggressive cytoreduction and IPHC. The present review will outline the rationale, current practice and future directions of IPHC in the management of peritoneal surface malignancies.