Discordance Between Clinical and Pathological Staging and Grading in Upper Tract Urothelial Carcinoma

Keiichiro Mori, Satoshi Katayama, Ekaterina Laukhtina, Victor M. Schuettfort, Benjamin Pradere, Fahad Quhal, Reza Sari Motlagh, Hadi Mostafaei, Nico C. Grossmann, Pawel Rajwa, Kristin Zimmermann, Pierre I. Karakiewicz, Mohammad Abufaraj, Harun Fajkovic, Morgan Rouprêt, Vitaly Margulis, Dmitry V. Enikeev, Shin Egawa, Shahrokh F. Shariat

Research output: Contribution to journalArticlepeer-review

Abstract

Introduction: This study aimed to evaluate the concordance in tumor stage and grade between ureteroscopic (URS) biopsy and radical nephroureterectomy (RNU) in patients with upper tract urothelial carcinoma (UTUC). Patients and Methods: Records of 1,214 UTUC patients who had undergone URS biopsy followed by RNU were included. Univariable and multivariable logistic regression analyses were performed to identify factors contributing to the pathological upstaging. Results: The concordance between URS biopsy-based clinical and RNU pathological staging was 34.5%. Clinical understaging occurred in 59.5% patients. Upstaging to muscle-invasive disease occurred in 240 (41.7%) of 575 patients diagnosed with ≤cT1 disease. Of those diagnosed with muscle-invasive disease on final pathology, 89.6% had been clinically diagnosed with ≤cT1 disease. In the univariable analyses, computed tomography urography (CTU)–based invasion, ureter location, hydronephrosis, high-grade cytology, high-grade biopsy, sessile architecture, age, and women sex were significantly associated with pathological upstaging (P <.05). In the multivariable analyses, CTU-based invasion and hydronephrosis remained associated with pathological upstaging (P <.05). URS biopsy-based clinical and pathological gradings were concordant in 634 (54.2%) patients. Clinical undergrading occurred in 496 (42.4%) patients. Conclusions: Clinical understaging/undergrading and upstaging to muscle-invasive disease occurred in a high proportion of UTUC patients undergoing RNU. Despite the inherent selection bias, these data underline the challenges of accurate UTUC staging and grading. In daily clinical practice, URS biopsy and CTU offer the most accurate preoperative information albeit with limited predictive value when used alone. These findings should be considered when utilizing preoperative, risk-adapted strategies.

Original languageEnglish (US)
JournalClinical Genitourinary Cancer
DOIs
StateAccepted/In press - 2021

Keywords

  • Biopsy
  • Computed tomography urography
  • Grade
  • Radical nephroureterectomy
  • Stage
  • Upper tract urothelial carcinoma
  • Ureteroscopy

ASJC Scopus subject areas

  • Oncology
  • Urology

Fingerprint

Dive into the research topics of 'Discordance Between Clinical and Pathological Staging and Grading in Upper Tract Urothelial Carcinoma'. Together they form a unique fingerprint.

Cite this