Histopathologic features and clinical outcomes in 71 cases of bladder diverticula

Ecaterina F. Tamas, Andrew J. Stephenson, Steven C. Campbell, Drogo K. Montague, Dante C. Trusty, Donna E. Hansel

Research output: Contribution to journalArticlepeer-review

50 Scopus citations


Context-Bladder diverticula often come to clinical attention when complications or malignancy occur, although limited information is available regarding histopathologic features and clinical outcomes. Objective-To identify the morphologic findings, neo- plastic subtypes, and clinical outcomes by reviewing all bladder diverticula that underwent pathologic sampling for primary diverticular processes at the Cleveland Clinic. Design-Hematoxylin-eosin slides from 71 cases of bladder diverticula were reviewed. Clinicopathologic features and patient outcomes were obtained from a retrospective review of patient records. Results-Patient ages ranged from 1 to 81 years (mean, 55 years), and the ratio of males to females was 68:3. Di- verticular size ranged from 1 to 18 cm (mean, 5.3 cm) and often involved the lateral walls (38/71; 54%). Neoplastic changes were present in half of cases (36/71; 51%), including both noninvasive (16/36; 44%) and invasive (20/ 36; 56%) carcinoma. Of the invasive carcinomas, less- common subtypes included small cell carcinoma (n = 3), squamous cell carcinoma (n = 2), and adenocarcinoma (n = 1); 9 cases were pT1 (45%) and 11 cases were pT3 (55%). Follow-up for patients with benign findings demonstrated no subsequent neoplastic bladder disease. Patient follow-up for neoplastic diverticula (median, 27 months) demonstrated 4 cases of local recurrence and 3 cases of subsequent metastases. Of 9 patients with pT1 disease, only 1 patient (11%) developed subsequent me- tastases, whereas patients with pT3 disease demonstrated a higher rate of both local recurrence (3/11; 27%) and subsequent metastases (2/11; 18%). Conclusions-Patients with invasive carcinoma in diver- ticula have an increased frequency ofless-common bladder cancer subtypes, and those with pT3 disease are at increased risk for subsequent progression.

Original languageEnglish (US)
Pages (from-to)791-796
Number of pages6
JournalArchives of Pathology and Laboratory Medicine
Issue number5
StatePublished - May 2009
Externally publishedYes

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Medical Laboratory Technology


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