Accuracy of the extent of bladder cancer nodal metastases found at pelvic lymphadenectomy at the time of cystectomy: Relation to primary tumor stage Journal Article


Authors: Rabbani, F.; Lee, C.; Chang, S. S.; Lerner, S. P.; Wood, D. P.; Herr, H. W.
Article Title: Accuracy of the extent of bladder cancer nodal metastases found at pelvic lymphadenectomy at the time of cystectomy: Relation to primary tumor stage
Abstract: Objectives: To determine the minimum number of nodes (nmin) that need to be removed to ascertain N0 status with 90/95% certainty, and to determine the maximum number of nodes theoretically involved for a given number 'm' of involved nodes reported out of a total of 'n' nodes examined. Methods: 2,025 patients underwent cystectomy and pelvic lymphadenectomy, with pathologic stage ≤pT2 in 1,132 (55.9%) and ≥pT3 in 893 (44.1%). A mathematical model was utilized, using incidences derived from those having ≥10 nodes retrieved. Results: For stage ≤pT2 and 0, 1, or 2 positive nodes reported, nmin are 2, 27, and 28, respectively, for 90% accuracy and 12, 29, and 29, respectively, for 95% accuracy. For stage ≥pT3 and 0, 1, or 2 positive nodes reported, nmin are 19, 28, and 29, respectively, for 90% accuracy and 24, 29, and 30, respectively, for 95% accuracy. Conclusions: Accuracy of the extent of nodal involvement depends on the number of positive nodes reported, total number of nodes retrieved, and pathologic stage. This model allows clinicians to assess potential underestimation of the 'true' number of involved nodes for a given number of positive nodes out of a total number reported. © 2010 S. Karger AG, Basel.
Keywords: controlled study; primary tumor; major clinical study; cancer staging; lymph node metastasis; lymph nodes; lymph node excision; accuracy; pelvis lymphadenectomy; incidence; bladder cancer; mathematical model; lymph node; cystectomy; physician; bladder neoplasms
Journal Title: Urologia Internationalis
Volume: 84
Issue: 1
ISSN: 0042-1138
Publisher: S. Karger AG  
Date Published: 2010-02-01
Start Page: 14
End Page: 22
Language: English
DOI: 10.1159/000273460
PROVIDER: scopus
PUBMED: 20173363
DOI/URL:
Notes: --- - "Export Date: 20 April 2011" - "CODEN: URINA" - "Source: Scopus"
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  1. Farhang Rabbani
    84 Rabbani
  2. Harry W Herr
    594 Herr