Abstract
Background
Goblet cell carcinoids (GCCs) of the appendix are rare mucinous neoplasms, for which optimal therapy is poorly described. We examined prognostic clinical and treatment factors in a population-based cohort.
Methods
Patients diagnosed with GCC from 1984 to 2014 were identified from the British Columbia Cancer Agency and the Vancouver Lower Mainland Pathology Archive.
Results
Of 88 cases with confirmed appendiceal GCCs, clinical data were available in 86 cases (annual population incidence: 0.66/1,000,000). Median age was 54 years (range 25–91) and 42 patients (49%) were male. Metastasis at presentation was the strongest predictor of overall survival (OS), with median OS not reached for stage I–III patients, and measuring 16.2 months [95% confidence interval (CI) 9.1–29] for stage IV patients. In 67 stage I–III patients, 51 (76%) underwent completion hemicolectomy and 9 (17%) received adjuvant 5-fluorouracil-based chemotherapy. No appendicitis at initial presentation and Tang B histology were the only prognostic factors, with inferior 5-year recurrence-free survival (53 vs. 83% with appendicitis, p = 0.02; 45% Tang B vs. 89% Tang A, p < 0.01). Of 19 stage IV patients, 10 (62.5%) received 5-fluorouracil-based chemotherapy and 11 (61%) underwent multiorgan resection (MOR) ± hyperthermic intraperitoneal chemotherapy (HIPEC). Low mitotic rate and MOR ± HIPEC were associated with improved 2-year OS, but only MOR ± HIPEC remained significant on multivariate analysis (hazard ratio 5.4, 95% CI 1.4–20.9; p = 0.015).
Conclusions
In this population-based cohort, we demonstrate excellent survival outcomes in stage I–III appendiceal GCCs and clinical appendicitis. Hemicolectomy remains the standard treatment. In metastatic disease, outcomes remain poor, although MOR ± HIPEC may improve survival.
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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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Erica S. Tsang, Yarrow J. McConnell, David F. Schaeffer, Lawrence Lee, Yaling Yin, Siham Zerhouni, Kimberly Schaff, Caroline Speers, and Hagen F. Kennecke declare that no conflicts of interest exist.
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Tsang, E.S., McConnell, Y.J., Schaeffer, D.F. et al. Outcomes of Surgical and Chemotherapeutic Treatments of Goblet Cell Carcinoid Tumors of the Appendix. Ann Surg Oncol 25, 2391–2399 (2018). https://doi.org/10.1245/s10434-018-6560-0
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DOI: https://doi.org/10.1245/s10434-018-6560-0