Adjuvant Hyperthermic Intraperitoneal Chemotherapy (HIPEC) for patients at High-Risk of Peritoneal Metastases

Peritoneal recurrence after resection for Stage I-III colorectal cancer: A population analysis

BACKGROUND

Colorectal cancer (CRC) often recurs in the peritoneum, although the pattern of peritoneal recurrence (PR) has received less attention. We sought to describe the presentation and risk factors for PR following CRC resection.

METHODS

We performed a cohort study of patients undergoing resection of Stage I-III CRC from 2006 to 2007 using merged data from a Commission on Cancer Special Study and the National Cancer Database. We estimated the timing, method of detection, and risk factors for isolated PR.

RESULTS

Here, 8991 patients were included and isolate PR occurred in 77 (0.9%) patients. The median time to PR was 16.2 months (intrquartile range = 9.3-28.0 months) and most patients were identified via new symptoms (36.4%). Pathologic factors associated with increased odds of PR included higher T stage (T3 vs. T2, odds ratio [OR] = 4.8, 95% confidence interval [CI] = 1.5-15.7), N stage (N1 vs. N0, OR = 2.00, CI = 1.1-3.7), and signet ring (OR = 8.2, CI = 3.0-22.3) or mucinous histology (OR = 2.6, CI = 1.5-4.7).

CONCLUSIONS

The majority of PR was detected within 18 months and few were identified by surveillance. Advanced T/N stage and signet ring/mucinous histology were associated with increased odds of PR.

Hyperthermic intrathoracic/intraperitoneal chemotherapy versus conventional intrapleural/intraperitoneal chemotherapy for the malignant effusion: a multi-center randomized clinical trial

OBJECTIVE

To compare the efficacy and safety of hyperthermic intrathoracic/intraperitoneal chemotherapy versus conventional intrapleural/intraperitoneal chemotherapy in the treatment of malignant pleural or peritoneal effusion.

METHODS

A randomized clinical trial was carried out in 8 cancer centers across China. Patients with malignant pleural or peritoneal effusion were randomly assigned to the study group or control group. Patients in the study group were treated with cisplatin-based hyperthermic intrathoracic chemotherapy (HITHOC) or hyperthermic intraperitoneal chemotherapy (HIPEC), while the control group was treated with conventional intrapleural or intraperitoneal chemotherapy using same chemotherapeutic regime as the study group. The objective response rate (ORR) was analyzed as primary outcome. Quality-of-life (QOL) score was recorded as secondary outcome using the questionnaire 30 (QLQ-C30) of the European Organization for Research and Treatment of Cancer (EORTC). The efficacy and safety of the two treatments were compared.

RESULTS

Total 135 patients were recruited and randomized in this study, with 67 patients in the study group and 68 patients in the control group. The ORR in the study group (80.70%) was significantly higher than that in the control group (31.03%, p < 0.001). However, neither changes of QOL scores, nor incidence rates of adverse events were significantly different between the two groups (p = 0.076 and 0.197, respectively).

CONCLUSION

Efficacy of HITHOC or HIPEC is superior to that of conventional modality for the treatment of malignant effusion with comparable side effects.

Cirurgia Citorredutora com Quimioterapia Intraperitoneal Hipertérmica em Pacientes com Adenocarcinoma Mucinoso de Apêndice: Série de 43 Casos

Introdução: O carcinoma primário de apêndice é uma condição rara. Muitas revisões retrospectivas internacionais delineiam a experiência de diferentes centros em neoplasias apendiculares. Por sua vez, o tratamento do câncer nessa localização é complexo e depende do subtipo histológico e da extensão da doença. Um dos tratamentos mais promissores é a cirurgia citorredutora (CCR) associada à quimioterapia intraperitoneal hipertérmica (HIPEC). No Brasil, não há descrição de séries de casos que tiveram essa abordagem terapêutica. O objetivo desta série de casos é analisar as características sociodemográficas e o tipo de intervenção terapêutica em pacientes com doenças malignas de apêndice em um Centro de Assistência de Alta Complexidade em Oncologia III (Cacon III). Relato dos casos: Foram incluídos 43 casos de tumores primários de apêndice. O adenocarcinoma do apêndice do tipo mucinoso de baixo grau foi a neoplasia mais diagnosticada. O principal protocolo utilizado foi de uma a duas cirurgias e aplicação de mitomicina C em temperatura média de 40 graus. Os casos apresentaram grande heterogeneidade quanto ao uso do protocolo. Conclusão: O presente relato de 43 casos é importante por se tratar de um tumor raro nessa localização. A modalidade terapêutica descrita é promissora, mas não há protocolo definido para essa finalidade. É necessário atualizar as diretrizes terapêuticas para normatizar a conduta internamente, especialmente em se tratando de uma unidade de referência nacional.