Primary Tumor Location and Outcomes After Cytoreductive Surgery and Intraperitoneal Chemotherapy for Peritoneal Metastases of Colorectal Origin

About 10% to 15% of patients with colon cancer have intraperitoneal metastases at diagnosis. The patients with intraperitoneal metastases and without distant metastases can benefit from cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC). Because up to a half of patients live for at least 5 years after this treatment, the treatment is used more and more often. The treatment of patients with intraperitoneal metastases with CRS and HIPEC costs more than the majority of other medical procedures, because CRS is extensive and takes a lot of time, and after surgery, patients need intensive care and expensive medications and equipment. Currently, only 40% to 80% of costs of CRS and HIPEC are reimbursed in Poland. Because CRS and HIPEC mean a financial loss to hospitals, they are rarely performed. We analyzed the costs of treating patients with peritoneal metastases by CRS and HIPEC in two centers (Gdank, Wroclaw) and showed how this treatment is reimbursed outside Poland. We discussed whether adequate qualification of patients and experience of the teams giving the treatment could reduce the costs.

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Differential radiographic appearance of BRAF V600E mutant metastatic colorectal cancer (mCRC) in patients matched by primary tumor location.

Journal of Clinical Oncology ◽

10.1200/jco.2016.34.4_suppl.554 ◽

2016 ◽

Vol 34 (4_suppl) ◽

pp. 554-554 ◽

Cited By ~ 3

Author(s):

Claire Greene ◽

Chloe Evelyn Atreya ◽

Ryan McWhirter ◽

Nabia Ikram ◽

Katherine Van Loon ◽

...

Keyword(s):

Primary Tumor ◽

Braf Mutation ◽

Tumor Location ◽

Peritoneal Metastases ◽

Left Colon ◽

Braf V600e ◽

Right Colon ◽

Mutation Status ◽

Primary Tumor Location ◽

Braf Mutant

554 Background: BRAF mutation status and location of CRC primary each correlate with pattern of metastatic spread. We sought to determine whether presence of a BRAF V600E (BRAF) mutation is differentially associated with sites and appearance of metastatic disease in patients matched by primary tumor location. Methods: 40 patients with BRAF mutant mCRC were matched to 80 patients with BRAF wild-type CRC by location of primary tumor (right colon, left colon or rectum), sex, and age ( < 50; 50+). CT scans were reviewed for disease characterization. BRAF mutation status, clinicopathological characteristics, and sites of metastatic disease were associated using proportion tests. Results: Of the 120 matched patients,60% were female. The distribution of primary tumor locations was: 60% right colon, 30% left colon, and 10% rectum. Median age at diagnosis was 57, range 20-88 yrs. Significantly higher frequencies of peritoneal metastases (p = 0.045) and ascites (p = 0.0038) occurred in patients with BRAF mutant tumors. Among patients with right colon primaries, no significant difference in sites of disease by BRAF mutation status was observed. In patients with left colon primaries, BRAF mutations associated with less frequent liver metastases (42% vs. 79%, p = 0.024) and more frequent ascites (58% vs. 12%, p = 0.0038). Disease was not measurable by RECIST version 1.1 criteria in 20% of patients with BRAF mutations, most often with peritoneal metastases and ascites. Conclusions: Presence of a BRAF V600E mutation associated with a greater proportion of peritoneal metastases and ascites, even among patients matched for primary tumor location. Of 20 patients with BRAF mutant mCRC and peritoneal metastases plus ascites, 6 patients (30%) had disease that was not measurable by RECIST version 1.1. Radiographic characterization provides a window on BRAF mutant mCRC biology and also reveals a challenge for response evaluation on clinical trials. [Table: see text]

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