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F. Maffeis
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Poster Display Session (ID 63)
- Event: ELCC 2017
- Type: Poster Display Session
- Track:
- Presentations: 2
- Moderators:
- Coordinates: 5/07/2017, 12:30 - 13:00, Hall 1
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152P - Relationship between overall survival and preoperative parameters in patients with colorectal cancer and synchronous liver and lung metastases (ID 451)
12:30 - 13:00 | Author(s): F. Maffeis
- Abstract
Background:
The overall survival (OS) of patients with synchronous colorectal cancer (CRC) and pulmonary metastases (PMs) is significantly shorter, but the optimal surgical strategy, including simultaneous colorectal and liver resection vs. delayed liver metastasectomy, has not been defined. The aim of this retrospective study was to evaluate the relationship between OS and preoperative parameters, including age, number and median size of metastases, in patients with PMs from CRC and synchronous or metachronous liver metastases (LMs).
Methods:
The medical charts of a group of 20 patients (9 man, 11 women, median age 60 years, range 31-75) who underwent curative surgery for CRC and developed both PMs and synchronous or metachronous LMs were reviewed. Eleven patients aged <65 years, whilst 9 patients aged 65 years or older. Written informed consent was obtained from all the participants. The Pearson correlation coefficient (R) and the linear regression equation calculation was obtained. Because the data were not normally distributed, the Mann-Whitney U-test was used to evaluate statistical significance of correlations.
Results:
The median OS was 12.0 months (range 1-58 months) and the overall disease-free interval (DFI) was 2.7±1.9 months. The OS showed a difference in favor of the older (≥65 years) patients (43.3±21.3 vs. 20.1±23.3, p = 0.036). As expected, a strong direct linear relationship between OS and DFI (R = 0.8469, p < 0.000001) was found. There was no significant correlation between OS and both median size (R=−0.3976, p = 0.8256, regression line equation: mm = 21.820349609352-0.20184496105481OS) and number of metastases (R=−0.2975, p = 0.2025, regression line equation: Number=3.294978403666-0.039208413596717OS). Surprisingly, a direct strong relationship between OS and the age of the patients (R = 0.6098, p = 0.0043, regression line equation: age=52.147836178944 + 0.46213761830125OS) was found.
Conclusions:
Our results suggest that patients with both PMs and LMs from CRC aged ≥65 years should undergo metastasectomy (in lack of contraindication to surgery) regardless of other parameters, including number and size of metastases, because OS directly correlates with age.
Clinical trial identification:
Legal entity responsible for the study:
Università degli Studi di Padova
Funding:
Università degli Studi di Padova
Disclosure:
All authors have declared no conflicts of interest.
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154P - Analysis of factors affecting survival in patients with simultaneous liver and pulmonary metastases from colorectal cancer (ID 450)
12:30 - 13:00 | Author(s): F. Maffeis
- Abstract
Background:
In patients with colorectal cancer (CRC) the presence of simultaneous liver (LMs) and pulmonary metastases (PMs) is uncommon, but may significantly affect overall survival (OS). The aim of this study was to identify the prognostic factors (PFs) influencing OS in such a group of patients.
Methods:
We retrospectively reviewed the medical records of 36 patients (mean age 62.2±10.5 years) with CRC who underwent curative surgical resection and developed PMs during follow up requiring video-assisted thoracoscopic (VATS) metastasectomy. There were 21 (58.3%) males and 15 (41.7%) females. Twenty (55.6%) patients had already LMs at the time of VATS. Survival curves were estimated by Kaplan-Meyer method and compared with log rank testing. Cox proportional hazard model (HR) calculation (stepwise logistic regression) was used in the multivariate analysis, to identify the independent variables. A p-value of < 0.01 (two-tailed) was considered statistically significant.
Results:
The OS of the entire population ranged widely (30.6±25.1 months), according to patient age (p = 0.004), presence of involved mesenteric (p = 0.0003) or thoracic (p = 0.0001) lymph nodes, number of the involved nodes (p = 0.006), and simultaneous LMs and PMs (p = 0.0002). There was no relationship between gender (p = 0.67) or the mean size of metastases (p = 0.53) and OS. A tendency towards a correlation between age and the presence of lymph node involvement (p = 0.050) was also observed. The regression analysis showed that the number of LMs (HR = 1.37, 95% CI: 1.14-1.67, p = 0.0011), and the presence of node involvement, both thoracic (HR = 11.49, 95% CI: 1.49-88.58, p = 0.0191) and mesenteric (HR = 5.79, 95% CI: 1.27-26.30, p = 0.0230), were independent parameters affecting OS.
Conclusions:
In patients with CRC with both LMs and PMs only lymph node involvement and their number should be considered as negative PFs. In conclusion, the results of liver metastasectomy are independent of age, gender, and size of metastases, and thus this therapeutic approach should be suggested in all node-negative patients suitable for surgery, regardless of other PFs.
Clinical trial identification:
Legal entity responsible for the study:
Università degli Studi di Padova
Funding:
Università degli Studi di Padova
Disclosure:
All authors have declared no conflicts of interest.
