The first 2 authors contributed equally to the manuscript.
Prognostic implications of signet ring cell histology in esophageal adenocarcinoma
Version of Record online: 29 MAY 2013
Copyright © 2013 American Cancer Society
Volume 119, Issue 17, pages 3156–3161, 1 September 2013
How to Cite
Yendamuri, S., Huang, M., Malhotra, U., Warren, G. W., Bogner, P. N., Nwogu, C. E., Groman, A. and Demmy, T. L. (2013), Prognostic implications of signet ring cell histology in esophageal adenocarcinoma. Cancer, 119: 3156–3161. doi: 10.1002/cncr.28099
- Issue online: 20 AUG 2013
- Version of Record online: 29 MAY 2013
- Manuscript Accepted: 12 FEB 2013
- Manuscript Revised: 7 FEB 2013
- Manuscript Received: 30 NOV 2012
- esophageal cancer;
- Surveillance, Epidemiology, End Results;
- signet ring;
Signet ring cell esophageal adenocarcinoma histology has been difficult to study in single institution series because of its relative rarity, yet has an anecdotal reputation for poor prognosis. The Surveillance, Epidemiology, and End Results (SEER) database was examined to assess the prognostic implications of this esophageal adenocarcinoma subtype.
All patients with esophageal adenocarcinoma in the SEER database from 2004 to 2009 were included. Univariate and multivariate analyses examining the relationship of signet ring cell histology with overall survival were performed in all patients, as well as those undergoing surgical resection.
A total of 596 of 11,825 (5%) study patients had signet ring cell histology. Patients with signet ring cell histology were similar in age, race, and sex distribution, but had a higher grade (P < .001) and higher stage (P < .001) at diagnosis. In both the all-patient group as well as those undergoing surgical resection, univariate analyses showed a worse survival in patients with signet ring cell esophageal cancer (hazard ratio [HR] = 1.24; 95% confidence interval [CI] = 1.13-1.36 and HR = 1.57; 95% CI = 1.29-1.93, respectively). In multivariate analyses adjusting for covariates, patients with signet ring cell cancer had a worse prognosis than those without (HR = 1.18; 95% CI = 1.07-1.30). In surgically resected patients, this remained a trend, but did not reach statistical significance (HR = 1.16; 95% CI = 0.94-1.42).
This large study of esophageal adenocarcinoma confirms the clinical impression that signet ring cell variant of adenocarcinoma is associated with an advanced stage at presentation and a worse prognosis independent of stage of presentation. Cancer 2013;119:3156–3161. © 2013 American Cancer Society.