Results of surgical treatment of resectable liver metastases in colorectal cancer at the University Clinical Centre Maribor
Keywords:
colorectal neoplasms, liver, metastases, colon, cancer, surgical, survivalAbstract
Methods: In the period from 1 July 1997 to 31 December 2011, a total of 377 liver surgeries were performed in 281 patients with metastases of CC (107 men, 103 women; mean age 63.3 years; span of 27 to 85 years).
Results: Of 377 surgeries for LM of CC, liver resection was performed 324 times, and in 28 of those patients in combination with RFA. 235 (79.4%) were R0 resections, 54 (18.2%) were R1 and 7 (2.4% were R2 resections. A total of 53 procedures were RFA of LM. In 113 patients, LM were diagnosed synchronously with CC, and 168 men had metachronous LM. Unilobar metastases were found in 145 patients, and 136 had bilobar metastases. On average, there were 2.9 liver metastases with an average size of 4.3 cm. In 46 patients, the disease was present also outside the liver. Prior to liver surgery, 131 patients underwent neoadjuvant chemotherapy. In 16 cases, portal embolisation was performed to increase the residual liver volume, and ligature of the right branch of the vena porta was performed 10 times. Simultaneous liver resection was performed in 41 patients. At the first surgery, liver resection was performed in 252 patients. Liver resection alone was performed in 239 patients, whereas in 23 patients, it was combined with radiofrequency ablation of LM (RFA). Of 239 LM resections without additional RFA, 198 (83%) were R0 resections, 36 (15%) were R1 and 5 (2%) were R2 resections. In 29 patients, only RFA of LM was performed (open RFA 20 times, percutaneous RFA 9 times). Surgery for disease recurrences was performed on 73 patients, who underwent 96 procedures (1 to 6 per patient). Considering all surgeries (377), the total post-operative incidence was 25.5%, and 30-day morbidity was 1.9%. The expected 5-year survival in patients with R0 resection of LM and no disease outside the liver was 38.3% (median survival: 43 months
Conclusions: Liver resections are safe (morbidity: 25.5%; 30-day morbidity: 1.9% in R0 resections). Considering the expected long-term survival (5-year of 38.8%, median of 43 months), they currently represent the most effective method for the treatment patients with metastases of CC. The focus is on the importance of a multidisciplinary approach and multi modal treatment of patients with metastases of CC.
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