The impact of histological reclassification during pathology re-review - Evidence of a Will Rogers effect in bladder cancer?

Brian J. Linder, Stephen A. Boorjian, John C. Cheville, William R. Sukov, Prabin Thapa, Robert F. Tarrell, Igor Frank

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Purpose: We investigated the association of histological reclassification during pathology re-review of radical cystectomy specimens with clinicopathological outcomes in patients initially classified with urothelial carcinoma. Materials and Methods: We identified 1,211 patients initially diagnosed with urothelial carcinoma at radical cystectomy between 1980 and 2005. All pathological specimens were re-reviewed by a urological pathologist. Survival was estimated using the Kaplan-Meier method and compared with the log rank test. Results: Of 1,211 cases previously recorded as pure urothelial carcinoma 406 (33%) were reclassified as variant histology. The most common variant histologies identified were squamous in 151 patients (37%) and micropapillary in 62 (15%). Variant histology on re-review was associated with a higher rate of extravesical disease (71%) than urothelial carcinoma at initial diagnosis (52%) or pure urothelial carcinoma on re-review (42%, p <0.0001). Median postoperative followup was 11.1 years, during which 976 patients died, including 564 of bladder cancer. Notably, reclassification resulted in significant stratification of 10-year cancer specific survival, which was 50% in patients with pure urothelial carcinoma after re-review, 47% in those with urothelial carcinoma on initial interpretation and 42% in those with variant histology on re-review (p = 0.03). Ten-year overall survival in patients with urothelial carcinoma on re-review, urothelial carcinoma at initial interpretation and variant histology on rereview was 29%, 27% and 24%, respectively (p = 0.04). Conclusions: Pathological re-review of radical cystectomy specimens identified variant histology in a third of patients. These variants are associated with a high rate of locally advanced disease, which may impact the noted rates of cancer specific and overall survival. Thus, it is critical to be aware of re-review status when interpreting outcomes from historical data sets and stratifying risk.

Original languageEnglish (US)
Pages (from-to)1692-1697
Number of pages6
JournalJournal of Urology
Volume190
Issue number5
DOIs
StatePublished - Nov 2013

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Keywords

  • Carcinoma
  • Diagnosis
  • Pathology
  • Urinary bladder
  • Urothelium

ASJC Scopus subject areas

  • Urology

Cite this

Linder, B. J., Boorjian, S. A., Cheville, J. C., Sukov, W. R., Thapa, P., Tarrell, R. F., & Frank, I. (2013). The impact of histological reclassification during pathology re-review - Evidence of a Will Rogers effect in bladder cancer? Journal of Urology, 190(5), 1692-1697. https://doi.org/10.1016/j.juro.2013.05.040