Long-term survival after multidisciplinary treatment of small-bowel neuroendocrine tumors with synchronous liver metastases: A single-institute experience.

Authors

null

Emilio Bertani

European Institute of Oncology, Milan, Italy

Emilio Bertani , Nicola Fazio , Antonio Chiappa , Edoardo Botteri , Francesca Spada , Chiara Grana , Davide Ravizza , Laura Cossu , Guido Bonomo , Bruno Andreoni

Organizations

European Institute of Oncology, Milan, Italy

Research Funding

No funding sources reported

Background: Neuroendocrine tumors (NETs) that originate in the distal jejunum and ileum are commonly diagnosed in stage IV, with liver metastases in 50%-75% of cases. The aim of this study was to ascertain the impact of surgery in a consecutive series of patients with small bowel NET and synchronous liver metastases treated at a single institute. Methods: Ninety-one patients managed between 1995 and 2011 were extracted from the institutional tumor registry. All patients had diagnosis by histology of small bowel NET and synchronous liver metastases. Results: Among the 91 patients 28 (30.8%) underwent primary tumor removal and liver metastases resection or intraoperative termal ablation (Group 1), 54 (59.3%) underwent resection of only the primary tumor (Group 2), and the remaining 9 (9.9%) did not receive any surgery (Group 3). After a median follow-up of 64 months an overall survival (OS) of 93.1%, 81.8% and 76.2% at 3, 5 and 8 years was registered for the whole group. Cancer-specific survival (CSS) was 93.1%, 83.3% and 77.6% at 3, 5 and 8 years, respectively. Five-years OS differed significantly according to the surgical approach (96.0% for Group 1 vs 79.8% for Group 2 vs 48.6% for Group 3, p=0.02). During the course of the illness octreotide was administered in 78 patients (85.7%), peptide receptor radiotherapy in 61 (67.0%), systemic chemotherapy in 21 (23.1%), hepatic artery embolization in 17 (18.7%), interferon in 11 (12.1%), molecular targeted agents in 2 (2.2%). For patients who underwent any surgery (Group 1 and Group 2) the multidisciplinary approach was associated with a better OS (85.7% vs 77.2% 5-years OS, p=0.04). In the multivariate analysis only age was associated with OS, HR: 1.05 (C. I.: 1.01-1.10). The results of CSS were comparable to those of OS. Conclusions: In this metastatic setting of small bowel NETs the 5 year OS was as high as 82% with a maximum benefit achievable for patients who had primary tumor resection and liver disease amenable to surgical or thermal ablation. However, the potential impact of age in prognosis should be carefully considered when choosing the treatment to be delivered in such patients.

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Abstract Details

Meeting

2013 ASCO Annual Meeting

Session Type

Publication Only

Session Title

Publication Only

Track

Gastrointestinal Cancer—Gastroesophageal, Pancreatic, and Hepatobiliary

Sub Track

Neuroendocrine/Carcinoid

Citation

J Clin Oncol 31, 2013 (suppl; abstr e15147)

DOI

10.1200/jco.2013.31.15_suppl.e15147

Abstract #

e15147

Abstract Disclosures

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