Appendiceal Adenocarcinoma: Long-Term Outcomes after Surgical Therapy

Hiromichi Ito, Robert T. Osteen, Ronald Bleday, Michael J. Zinner, Stanley W. Ashley, Edward E. Whang

Research output: Contribution to journalArticlepeer-review

Abstract

PURPOSE: Appendiceal adenocarcinomas are very rare. We analyzed contemporary outcomes associated with surgical therapies for these malignancies. METHODS: Retrospective outcomes for patients treated at a tertiary academic medical center from 1981 through 2001 were analyzed. RESULTS: A total of 36 patients (22 females (61 percent) mean age, 52 years) with appendiceal adenocarcinoma were treated. Eighty-eight percent of patients presented with symptoms of acute appendicitis. Eighteen (50 percent) patients underwent curative resection (7 primary right hemicolectomies, 10 appendectomies + subsequent right hemicolectomy, and 1 appendectomy alone). Mean length of follow-up was 55 months. Overall five-year survival rate was 46 percent. The five-year survival rate after curative resection was 61 percent and after palliative surgery was 32 percent (P < 0.05). Among patients who underwent curative resection, factors associated with improved five-year survival rates included histologic type (79 vs. 32 percent for colonic vs. mucinous types, respectively; P < 0.05), T stage (75 vs. 47 percent for T1 and 2 vs. T3 and 4, respectively; P < 0.05), and tumor grade (100 vs. 46 percent for well-differentiated tumors vs. moderately or poorly differentiated tumors, respectively; P < 0.05). CONCLUSIONS: Patients undergoing surgery for appendiceal adenocarcinoma can be stratified according to prognostic variables. The role of adjuvant therapies for patients with poor prognostic factors needs to be evaluated in a multi-institutional setting.

Original languageEnglish (US)
Pages (from-to)474-480
Number of pages7
JournalDiseases of the colon and rectum
Volume47
Issue number4
DOIs
StatePublished - Apr 2004

Keywords

  • Appendiceal adenocarcinoma
  • Appendiceal cancer
  • Cancer prognosis

ASJC Scopus subject areas

  • Gastroenterology

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