Repeat cytoreductive surgery and hyperthermic intraperitoneal chemotherapy for recurrent diffuse malignant peritoneal mesothelioma

Building an Efficient Peritoneal Surface Malignancies Program Despite the Lower-Middle-Income Barriers: Ukraine Experience

PURPOSE

Cytoreductive surgery/hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) programs are often limited to centers in developed countries because of extensive requirements. We aimed to analyze efficacy and challenges of CRS/HIPEC centers in lower-middle-income settings in the Ukraine example.

METHODS

A multicenter descriptive study was conducted using data sets (2008-2022) from Kyiv, Lviv, and Odesa centers. Patients with appendiceal neoplasm (AN); colorectal cancer (CRC); malignant peritoneal mesothelioma (MPM); and epithelial ovarian, fallopian tube, and primary peritoneal cancer (EOC) treated with CRS ± HIPEC were included. Overall survival (OS) was analyzed for N ≥ 20 cohorts using the Kaplan-Meier method.

RESULTS

We included 596 patients. At Kyiv and Lviv centers, 37 and 28 patients with AN had completeness of cytoreduction (CC-0/1) rates of 84% and 71%, respectively. Thirty-day major morbidity stood at 24% and 18%, respectively. Median OS was not reached (NR) at both centers. Nineteen patients with CRC from Kyiv, 11 from Lviv, and 156 from Odesa had CC-0/1 rates of 84%, 91%, and 86%, respectively. Thirty-day major complications occurred in 16%, 18%, and 8%, respectively. Median OS in the Odesa cohort was 35 (95% CI, 32 to 38) months. Among 15 Kyiv, five Lviv, and six Odesa patients with MPM, CC-0/1 rates were 67%, 80%, and 100%, respectively, while major complications occurred in 13%, 0%, and 17%, respectively. OS was not analyzed because of small MPM cohorts. At Kyiv, Lviv, and Odesa centers, 91, 40, and 89 patients, respectively, had primary EOC. CC-0/1 rates were 79%, 100%, and 80%, and 30-day major morbidity rates were 23%, 5%, and 6%, respectively. Median OS was NR, 71 (95% CI, 32 to 110), and 67 (95% CI, 61 to 73) months, respectively.

CONCLUSION

CRS/HIPEC programs in lower-middle-income environment can achieve safety and survival that meet global standards. Our discussion highlights common obstacles in such settings and proposes effective overcoming strategies.

2022 PSOGI Consensus on HIPEC Regimens for Peritoneal Malignancies: Diffuse Malignant Peritoneal Mesothelioma

BACKGROUND

Diffuse malignant peritoneal mesothelioma (DMPM) is a rare and aggressive primary peritoneal disease, with recommended treatment, in eligible patients, of a combination of complete cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC). As treatment is multimodal, there is a wide heterogeneity of HIPEC protocols precluding clear comparisons. Standardization at an international level is required.

METHODS

The Peritoneal Surface Oncology Group International (PSOGI) designated a steering committee to produce consensus recommendations for HIPEC regimens, adapted to each etiology. The Grades of Recommendation, Assessment, Development, and Evaluation (GRADE) methodology was used, based on a systematic review focused on main outcomes related to HIPEC regimens in DMPM patients and on the patient, intervention, comparator, and outcome (PICO) method to elaborate main questions. An opinion survey was added. Furthermore, a Delphi process was performed with voting from a panel of international experts.

RESULTS

Eleven questions were elaborated, including two for future research requirements and three to assess the HIPEC regimen preference of the panel. The level of evidence underlying questions was globally low. Overall, 75 (86%) and 67 (77%) of the 87 invited experts completed the vote at the first and second round, respectively. HIPEC following complete CRS was strongly supported by 88% of voters with no need to plan comparative studies with CRS alone for 61.2% of voters. Bi-drug regimens appeared to be preferred to mono-drug ones and cisplatin was globally favored. The opinion survey confirmed the combination of cisplatin and doxorubicin as the recommended regimen.

CONCLUSION

International consensus confirmed the indication of HIPEC following complete CRS in DMPM patients and recommended cisplatin-doxorubicin as the first-line HIPEC regimen.

Peritoneal Mesothelioma: Systematic Review of Hyperthermic Intraperitoneal Chemotherapy (HIPEC) Protocol Outcomes

Diffuse malignant peritoneal mesothelioma (DMPM) prognosis was improved by the locoregional treatment combining cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC). HIPEC is a multiparametric treatment with multiple protocols proposed and reviewed in this work. A systematic review of medical literature was performed according to PRISMA guidelines. The search strategy used "malignant peritoneal mesothelioma" and "HIPEC" as keywords in three databases. Studies were included if reporting precisely the HIPEC regimen and the related outcomes, if comparing regimen, or if reporting national/international guidelines. The GRADE methodology was used to rate the level of evidence. Twenty-eight studies were included in this review: 1 was a meta-analysis, 18 reported cohort outcomes, 4 retrospectively compared HIPEC regimens, and 5 were guidelines. Six HIPEC regimens were found, 4 with one drug (cisplatin, mitomycine-C, carboplatin, oxaliplatin), 2 using two drugs (cisplatin-doxorubicin or cisplatin-mitomycine-C). Cisplatin, up to 250 mg/m2 over 90 min, appeared as the key HIPEC drug with a toxicity profile well controlled by the concomitant intravenous perfusion of sodium thiosulfate. Comparative studies tended to show that a bi-drug regimen led to better long-term oncologic outcomes, with cisplatin 50 mg/m2 plus doxorubicin 15 mg/m2 being safe and more efficient. This late protocol was the most widely used and recommended in 3 out of 4 international guidelines. Cisplatin was the preferred drug for HIPEC in DMPM patients. Most of the time, it was combined with doxorubicin for 90 min. A harmonization of protocols and further comparative studies are needed to optimize HIPEC regimen choice.

Long-Term Survival in Patients Treated with Cytoreduction and Heated Intraperitoneal Chemotherapy for Peritoneal Mesothelioma at a Single High-Volume Center

BACKGROUND

Malignant peritoneal mesothelioma (MPM) is a rare diagnosis with a dismal prognosis if untreated. Cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS-HIPEC) is shown to significantly improve survival. Our institution is uniquely positioned to report long-term outcomes in MPM with CRS-HIPEC, due to our robust peritoneal surface disease program existing over the past three decades.

METHODS

Our prospectively maintained, single-institution database of CRS-HIPEC cases was reviewed, identifying 111 consecutive patients with MPM over 28 years (1993-2021). Prognostic, operative, and pathologic factors were reviewed. Overall survival (OS) and conditional survival (CS) analyses were performed.

RESULTS

The average age was 55.1 years; 58.6% of patients were male; 17 of 111 patients (15.3%) had a second CRS-HIPEC. At first CRS-HIPEC, the average PCI score was 18.7, and the perfusate drugs were platinum-based (72.1%) and mitomycin C (27.9%). The resection status at first CRS-HIPEC was R2a (46.4%), followed by R0-1 (29.1%), and R2b-c (24.5%). Median OS was 3.3 years for the entire cohort, with 75th and 25th percentiles at 10.7 months and 10.6 years. Median CS was improved if patients survived to the 1-year postoperative mark (4.9 years, p < 0.01) and trended toward further improvement with each passing year. If 3-year postoperative survival was achieved, the median CS improved to 6.1 years.

CONCLUSIONS

This represents one of the largest and lengthiest, single-center, longitudinal, case series of peritoneal mesothelioma treated with CRS-HIPEC. The OS suggests efficacy for CRS-HIPEC for MPM. Long-term survival improves significantly after patients achieve the 1-year, postoperative mark.

Repeat Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy Is Not Associated with Prohibitive Complications: Results of a Multiinstitutional Retrospective Study

BACKGROUND

Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) is offered to select patients with peritoneal metastases. In instances of recurrence/progression, a repeat CRS/HIPEC may be considered. The perioperative morbidity and the potential oncologic benefits are not well described.

PATIENTS AND METHODS

We performed a retrospective analysis of a multiinstitutional database to assess the perioperative outcomes following repeat CRS/HIPEC (repeat). Kaplan-Meier and Cox estimates were used to assess survival.

RESULTS

In the entire cohort, 2157 patients were analyzed, with 158 (7.3%) in the repeat cohort. The rate of complete cytoreduction was 89.8% versus 83.0% in initial versus repeat groups. The overall incidence of major complications was similar (26.3% vs. 30.7%); however, reoperation was more common in the repeat group. Perioperative outcomes such as length of stay and nonhome discharge were not significantly different. For the entire cohort, 5-year overall survival (OS) was 56.0% in the initial group and 59.5% in the repeat group. In patients with only appendiceal cancer, we observed a 5-year OS of 64.0% in the initial group compared with 67.3% in the repeat cohort. For patients with appendiceal cancer who developed a recurrence/progression, median OS was 36 months in the no repeat operation group compared with 73 months for those that did. Multivariable regression demonstrated that completeness of cytoreduction and tumor grade were associated with OS, but repeat operation was not.

CONCLUSIONS

Repeat CRS/HIPEC is not associated with prohibitive risk. Survival is possibly improved, and therefore, repeat operation should be considered in selected patients with recurrent or progressive disease.

The Safety of Iterative Cytoreductive Surgery and HIPEC for Peritoneal Carcinomatosis: A High Volume Center Prospectively Maintained Database Analysis

INTRODUCTION

Offering iterative cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) for recurrence of peritoneal carcinomatosis (PC) poses a surgical dilemma. Safety of this repeated operation in the short and long term has not been largely investigated.

METHODS

Patients with PC who underwent 377 CRS/HIPEC procedures between 2007 and 2018 at our institution were included from a prospectively maintained database. Outcomes for patients who had singular CRS/HIPEC were compared with those for patients who had repeated CRS/HIPEC.

RESULTS

Overall, there were 325 singular and 52 iterative CRS/HIPEC procedures performed during this time period. Age, sex, and ASA class were comparable between cohorts (p = NS). Optimal cytoreduction, mean operative time, mean length of hospital stay, 90-day major morbidity, and 90-day mortality were also similar. At a median follow-up of 24 months, there was no significant difference in recurrence rate (%, 60 vs 63, p = 0.76), disease-free survival (mean months, 19 vs 15, p = 0.30), and overall survival (mean months, 32 vs 27, p = 0.69). The iterative CRS/HIPEC group had significantly higher rates of major late complications than the singular CRS/HIPEC group (%, 18 vs 40, p < 0.01).

CONCLUSION

Repeated CRS/HIPEC for PC has similar perioperative morbidity and mortality, as well as long-term oncological benefits, when compared with singular CRS/HIPEC. However, more than twice as many patients undergoing iterative CRS/HIPEC suffered from major late complications.

Two-Stage Cytoreductive Surgery and Intraperitoneal Chemotherapy for Diffuse Malignant Peritoneal Mesothelioma: Predictors of Overall Survival in an Intention-to-Treat Series

PURPOSE

Cytoreductive surgery with intraoperative hyperthermic intraperitoneal chemotherapy is standard of care for diffuse malignant peritoneal mesothelioma (DMPM), but there is variability among institutions in the administration of adjuvant chemotherapy. Characterization of the largest series of DMPM patients treated at a single institution and identification of the demographic, disease, and treatment factors associated with overall survival were sought.

PATIENTS AND METHODS

All DMPM patients who underwent initial cytoreductive surgery with the intention to undergo intraperitoneal chemotherapy and a second-look operation from 1995 to 2016 at our institution were retrospectively reviewed. The primary endpoint was overall survival.

RESULTS

A total of 204 DMPM patients underwent initial cytoreduction. Median overall survival was 32 months from initial cytoreduction. Independent baseline prognostic factors of improved overall survival were female sex, age < 60 years, and epithelioid histology. Independent treatment factors associated with improved overall survival were attempted resection at initial operation, residual disease < 0.5 cm at the end of the initial operation, and dwell intraperitoneal chemotherapy.

CONCLUSIONS

Cytoreductive surgery with intraoperative and dwell intraperitoneal chemotherapy is a feasible approach for DMPM. Expanded access to these therapies may offer benefit to a larger population of patients. Demographic and operative parameters associated with overall survival in this large cohort are consistent with previous reports. In the context of this treatment protocol, dwell intraperitoneal chemotherapy is associated with longer overall survival.

Manejo del mesotelioma peritoneal maligno con citorreducción quirúrgica más quimioterapia hipertérmica intraperitoneal en el Instituto Nacional de Cancerología, Colombia: reporte de un caso y revisión bibliográfica

El mesotelioma peritoneal es una neoplasia que se origina en las células mesoteliales del peritoneo. Históricamente, la supervivencia de los pacientes con mesotelioma peritoneal maligno sin tratamiento, es menor de 12 meses y se considera una neoplasia resistente a la quimioterapia. La citorreducción quirúrgica y la quimioterapia regional administrada como quimioterapia hipertérmica intraperitoneal (Hyperthermic Intraperitoneal Chemotherapy, HIPEC) se asocia con mejor supervivencia a largo plazo. Se presenta el caso de un paciente con antecedentes de exposición al asbesto y con diagnóstico de mesotelioma peritoneal maligno de tipo epitelioide, que fue tratado con cirugía citorreductora más quimioterapia hipertérmica intraperitoneal en el Instituto Nacional de Cancerología con una supervivencia de un año libre de enfermedad.

The incidence and risk factors of hepatotoxicity induced by perioperative hyperthermic intraperitoneal chemotherapy in gastrointestinal carcinoma patients: a retrospective study

Aim

To investigate the incidence and risk factors of hepatotoxicity induced by perioperative hyperthermic intraperitoneal chemotherapy (HIPEC) in gastrointestinal carcinoma patients.

Patients and methods

Patients with gastrointestinal cancers treated with surgery in the presence or absence of HIPEC at a single institution were retrospectively reviewed. The patients received the treatment of surgery + HIPEC or surgery alone. The incidence of hepatotoxicity induced by HIPEC was recorded and risk factors were analyzed.

Results

In total, 301 eligible patients were included in the study, with 201 cases in the surgery + HIPEC group and 100 cases in the surgery group alone. The incidence of hepatotoxicity in the surgery + HIPEC group was higher than that in the surgery-alone group (57.71% vs 42%, P<0.05). In univariate analysis, HIPEC regimens, HIPEC techniques, HIPEC duration, and gastrointestinal complications were associated with the incidence of hepatotoxicity (P<0.05), while patient age, gender, tumor type, clinical stage, pathological type, blood transfusion, hepatitis B virus infection status, long-term alcohol use, and surgical techniques were not (P>0.05). Multivariate analysis showed that HIPEC regimen was the main risk factor of hepatotoxicity induced by HIPEC, with cisplatin + docetaxel being an independent risk factor of the HIPEC-induced hepatotoxicity. Open HIPEC techniques and HIPEC duration more than 60 minutes tend to increase the incidence of hepatotoxicity.

Conclusion

Surgery + HIPEC increases the incidence of hepatotoxicity. HIPEC regimen is the main risk factor for hepatotoxicity induced by HIPEC. Further prospective study is needed to confirm our conclusion.

Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy for the Elderly: Is It Reasonable? A Meta-Analysis

BACKGROUND

Whether cytoreductive surgery (CRS) plus hyperthermic intraperitoneal chemotherapy (HIPEC) is safe and worthwhile for elderly patients remains unclear. This meta-analysis of outcomes after CRS plus HIPEC for the elderly aimed to generate a higher level of evidence and precise indications for these patients.

METHODS

A systematic literature search for studies reporting postoperative outcomes after CRS plus HIPEC for elderly patients was performed in the MEDLINE, Cochrane Central Register of Controlled Trials, ClinicalTrials.gov, Web of Knowledge Conference Proceedings Citation Index-Science, and Google Scholar databases. The included studies evaluated the overall 30-day postoperative morbidity, 90-day postoperative mortality, grade 3 or higher postoperative morbidity, rates of anastomotic leaks, reoperation and readmission, and length of hospital stay.

RESULTS

The inclusion criteria were met by 13 retrospective studies involving 2544 patients. Considering only comparative studies, the 90-day postoperative mortality was significantly increased for elderly patients [odds ratio (OR), 0.49; 95% confidence interval (CI), 0.27-0.88; I ² = 79%]. The 30-day grade 3 or higher postoperative morbidity was increased in the patients 70 years of age or older (14.5%; 95% CI 8.1-24.4 vs. 32.3%; 95% CI 22.4-44.0%; p = 0.004; I ² = 85%). The overall 30-day postoperative morbidity, rates of anastomotic leaks, reoperation and readmission, and length of hospital stay were not affected by age.

CONCLUSIONS

Treatment of the elderly with CRS plus HIPEC was associated with increased severe postoperative morbidity and mortality. However, these conclusions should be weighted given the existence of major biases in the included studies. Age alone probably would not be a formal contraindication, but frailty should be taken into account. Further prospective studies are needed.

Repeat cytoreductive surgery with hyperthermic intraperitoneal chemotherapy: review of indications and outcomes

Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is an established treatment option in selected patients with peritoneal dissemination from a variety of epithelial primaries. Even though a small proportion will be alive and potentially cured at 10 years, the majority will eventually develop recurrent disease. Repeat CRS/HIPEC is a valid consideration in a selected subpopulation of patients with isolated peritoneal recurrence. This review summarizes the data on patient selection, feasibility, limitations and outcomes of repeat CRS/HIPEC.