Cytoreductive surgery and hyperthermic intraperitoneal chemoperfusion: The University of Arizona early experience

Early experience with cytoreduction and hyperthermic intraperitoneal chemotherapy at a newly developed center for peritoneal malignancy

Background

Cytoreductive surgery and hyperthermic intraperitoneal chemotherapy (CRS/HIPEC) has improved outcomes for patients with peritoneal carcinomatosis (PC). We present our experience from a newly developed peritoneal surface malignancy program.

Methods

An IRB approved retrospective review was performed for the first 50 patients treated with CRS/HIPEC with clinicopathologic data described.

Results

Patients treated with CRS/HIPEC were Caucasian (64%), female (66%) with a median age of 53 years (range, 11-73 years). Primary pathology included: appendix (40%, n=20), ovary (20%, n=10), colon (14%, n=7), desmoplastic small round cell tumor (14%, n=7) or other (12%, n=6). The median peritoneal cancer index (PCI) score was 15.5 (range, 1-39) and 92% underwent complete cytoreduction (CCR 0/1). Median hospital length of stay was 9.0 days (range, 6-35 days). Eight patients (16%) suffered major morbidity with 2 (4%) 30-day mortalities.

Conclusions

Short-term outcomes observed after CRS/HIPEC in a newly developed center for PC are consistent with published higher volume center experiences.

Impact of surgical volume of centers on post-operative outcomes from cytoreductive surgery and hyperthermic intra-peritoneal chemoperfusion

Complex surgical operations performed at centers of high volume have improved outcomes due to improved surgical proficiency, and betters systems of care including avoidance of errors. Cytoreductive surgery (CRS) and hyperthermic intra-peritoneal chemoperfusion (HIPEC), which has been shown to be an oncologically effective strategy for peritoneal carcinomatosis (PC), is one such procedure with significant morbidity and mortality. The learning curve to reach technical proficiency in CRS + HIPEC is about 140-220 cases for a center. Focus on improving surgical proficiency through training, improving systems of care through partnerships and reporting mechanisms for quality could reduce the time to proficiency.

Preliminary Experience and Morbidity Analysis of Cytoreductive Surgery with Hyperthermic Intraperitoneal Chemotherapy (CRS/HIPEC) from a Tertiary Cancer Center in India

BACKGROUND

Peritoneal carcinomatosis (PC) can arise directly from peritoneum (primary) or from regional spread of gastrointestinal and gynecological malignancies. It is often considered a terminal event. CRS/HIPEC procedure provides encouraging outcomes in select sub-set of patients with PC. In this study we present our initial experience of this combined procedure from a tertiary cancer care center in India.

MATERIALS AND METHODS

Between January 2014 to January 2015, 13 patients underwent CRS + HIPEC procedure at our center. Preoperative assessment for cytoreduction was done using contrast CT-scan of the abdomen and staging laparoscopy. All procedures were performed by the same surgical team. After cytoreduction, HIPEC was performed by closed method.

RESULTS

Median patient age was 52 and median PCI was 13.5 (5-21). Ovarian cancers were commonest origin of PC in our series. All patients had a complete cytoreduction with a median operative time of 8.3 hours. Postoperative ileus was the commonest adverse event. In the immediate postoperative period, major complications were observed in 23% (3/13) of our patients (1. intra-abdominal abscess 2. Septicemia and liver function derangement 3. Bowel obstruction which required a re-operation. Median hospital stay was 12 days (range 9-45 days) and there was no perioperative mortality.

CONCLUSION

Our initial results indicate that CRS + HIPEC procedure can be performed with acceptable morbidity and no mortality. Appropriate case selection by a multi-disciplinary team is vital to achieve complete cytoreduction and optimize outcomes.

Long noncoding RNA aberrant expression profiles after cytoreductive surgery and hyperthermic intraperitoneal chemotherapy of AGC ascertained by microarray analysis

Long noncoding RNAs (lncRNAs) have been shown to be involved in the development and progression of advanced gastric cancer (AGC). However, the roles of lncRNAs in advanced gastric cancer during the process of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC) are not well understood. A high-throughput microarray analysis was performed to compare the expression profiles of lncRNAs and messenger RNAs (mRNAs) in AGC serum samples during the process of CRS + HIPEC. Several potentially AGC-associated lncRNAs were verified by real-time quantitative reverse transcription polymerase chain reaction (PCR) analysis. Using abundant and varied probes, we were able to assess 33,045 lncRNAs and 30,215 mRNAs in our microarray. We found that 566 lncRNAs were differentially expressed (2-fold change) in AGC serum samples, indicating the significantly up- or downregulated lncRNAs play important roles in AGC during the process of CRS + HIPEC. Quantitative PCR results further verified that eight lncRNAs were aberrantly expressed in AGC serum samples after CRS + HIEC compared with matched serum sample before CRS + HIPEC. Among them, BC031243 and RP11-356I2.2 were the most aberrantly expressed lncRNAs, as estimated by quantitative PCR in six pairs of AGC serum samples. Our study demonstrated the expression patterns of lncRNAs in AGC serums before and after CRS + HIPEC by microarray. These results revealed that lncRNAs were differentially expressed during the process of CRS + HIPEC, suggesting that they might play key roles in tumor development.

Metastatic adenocarcinomas of the stomach or esophagogastric junction (UICC stage IV) are not always a palliative situation: a retrospective analysis

BACKGROUND

Gastric cancer is one of the most common cancers. Unfortunately, it is often diagnosed at the advanced stage International Union Against Cancer stage IV. This induced us to carry out an interdisciplinary analysis of this patient group with the Department of Internal Medicine 1. Our aim was to discuss cancers classified initially as unresectable in a meeting of the interdisciplinary tumor board after palliative chemotherapy, and to refer selected patients for surgery after establishing resectability. The outcome of the chemotherapy, operation method, complication rate, and long-term survival were analyzed.

METHODS

From 1999 to 2008, 76 patients with metastatic gastric cancer or carcinoma of the esophagogastric junction were discussed by the interdisciplinary tumor board of the University of Erlangen and classified initially as unresectable. The patients then received palliative chemotherapy according to the AIO regimen (weekly high-dose 5-fluorouracil/folinic acid [FU/FA] in a 24 h infusion), plus irinotecan. If the tumor was subsequently classified as resectable, the patient underwent either gastric resection or gastrectomy with DII-III dissection. Metastases were resected depending on their location (liver). Peritoneal carcinomatosis was treated additionally by HIPEC. Statistical analysis was with SPSSS version 20.

RESULTS

Surgical and general complications and hospital mortality were acceptable. There were no cases of anastomotic leak, but one patient died of fulminant pneumonia. The R0 resection rate was 69 %, and four patients had long-term survival of more than 60 months. There were significant survival advantages.

CONCLUSIONS

Metastatic gastric cancer or carcinoma of the esophagogastric junction can become resectable after downsizing the tumor with palliative chemotherapy. Long-term survival is achieved in some cases. Therefore, every patient with this type of cancer should be discussed by the interdisciplinary tumour board after palliative chemotherapy to provide him with a chance of cure after re-evaluation.

Malignant mesothelioma

Malignant Mesothelioma (MM) is a rare but rapidly fatal and aggressive tumor of the pleura and peritoneum with limited knowledge of its natural history. The incidence has increased in the past two decades but still it is a rare tumor. Etiology of all forms of mesothelioma is strongly associated with industrial pollutants, of which asbestos is the principal carcinogen. Mesothelioma is an insidious neoplasm arising from mesothelial surfaces i.e., pleura (65%-70%), peritoneum (30%), tunica vaginalis testis, and pericardium (1%-2%). The diagnosis of peritoneal and Pleural mesothelioma is often delayed, due to a long latent period between onset and symptoms and the common and nonspecific clinical presentation. The definite diagnosis can only be established by diagnostic laparoscopy or open surgery along with biopsy to obtain histological examination and immunocytochemical analysis. Different treatment options are available but Surgery can achieve a complete or incomplete resection and Radical resection is the preferred treatment. Chemotherapy has an important role in palliative treatment. Photodynamic therapy is also an option under trial. Patients who successfully underwent surgical resection had a considerably longer median survival as well as a significantly higher 5-year survival.

Source of Data/Study Selection: The data were collected from case reports, cross-sectional studies, Open-label studies and phase –II trials between 1973-2012.

Data Extraction: Web sites and other online resources of American college of surgeons, Medline, NCBI and Medscape resource centers were used to extract data.

Conclusion: Malignant Mesothelioma (MM) is a rare but rapidly fatal and aggressive tumor with limited knowledge of its natural history. The diagnosis of peritoneal and Pleural mesothelioma is often delayed, so level of index of suspicion must be kept high.

The treatment of peritoneal carcinomatosis in advanced gastric cancer: state of the art

Gastric cancer (GC) is the fourth most common cancer and the second leading cause of cancer death in the world; 53–60% of patients show disease progression and die of peritoneal carcinomatosis (PC). PC of gastric origin has an extremely inauspicious prognosis with a median survival estimate at 1–3 months. Different studies presented contrasting data about survival rates; however, all agreed with the necessity of a complete cytoreduction to improve survival. Hyperthermic intraperitoneal chemotherapy (HIPEC) has an adjuvant role in preventing peritoneal recurrences. A multidisciplinary approach should be empowered: the association of neoadjuvant intraperitoneal and systemic chemotherapy (NIPS), cytoreductive surgery (CRS), HIPEC, and early postoperative intraperitoneal chemotherapy (EPIC) could increase the rate of completeness of cytoreduction (CC) and consequently survival rates, especially in patients with Peritoneal Cancer Index (PCI) ≤6. Neoadjuvant chemotherapy may improve survival also in PC from GC and adjuvant chemotherapy could prevent recurrence. In the last decade an interesting new drug, called Catumaxomab, has been developed in Germany. Two studies showed that this drug seems to improve progression-free survival in patients with GC; however, final results for both studies have still to be published.