TY - JOUR
T1 - Metric substage according to micro and extensive lamina propria invasion improves prognostics in T1 bladder cancer
AU - Fransen van de Putte, Elisabeth E.
AU - Otto, Wolfgang
AU - Hartmann, Arndt
AU - Bertz, Simone
AU - Mayr, Roman
AU - Bründl, Johannes
AU - Breyer, Johannes
AU - Manach, Quentin
AU - Compérat, Eva M.
AU - Boormans, Joost L.
AU - Bosschieter, Judith
AU - Jewett, Michael A. S.
AU - Stoehr, Robert
AU - van Leenders, Geert J. L. H.
AU - Nieuwenhuijzen, Jakko A.
AU - Zlotta, Alexandre R.
AU - Hendricksen, Kees
AU - Rouprêt, Morgan
AU - Burger, Maximilian
AU - van der Kwast, Theo H.
AU - van Rhijn, Bas W. G.
PY - 2018/8/1
Y1 - 2018/8/1
N2 - Background: Reliable prognosticators for T1 bladder cancer (T1BC) are urgently needed. Objective: To compare the prognostic value of 2 substage systems for T1BC in patients treated by transurethral resection (TUR) and adjuvant bacillus Calmette-Guérin therapy. Design, setting, and participants: The slides of 601 primary T1BCs from four institutes were reviewed by 2 uropathologists and substaged according to 2 classifications: metric substage according to T1 microinvasive (T1m—lamina propria invasion <0.5 mm) and T1 extensive invasive (pT1e—invasion ≥ 0.5 mm), and according to invasion of the muscularis mucosae (MM) (T1a—invasion above or into MM/T1b). Outcome measurements and statistical analysis: Multivariable analyses for progression-free (PFS) and cancer-specific survival (CSS) were performed including substage, size, multiplicity, carcinoma in situ, sex, age, WHO-grade 1973, and WHO-grade 2004 as variables. Results: Median follow-up was 5.9 years (interquartile range: 3.3–9.0). Progression to T2BC was observed in 148 (25%) patients and 94 (16%) died of BC. The MM was not present at the invasion front in 135 (22%) of tumors. Slides were substaged as follows: 213 T1m and 388 T1e and 281 T1a and 320 T1b. On multivariable analysis, T1m/e substage and WHO 1973 grade were the strongest prognosticators for PFS (hazard ratio [HR] = 3.8 and HR = 1.8) and CSS (HR = 2.7 and HR = 2.6), respectively. Other prognostic factors for CSS were age (HR = 1.03), and tumor size (HR = 1.8). Substage according to MM-invasion was not significant. Our study was limited by its retrospective design and that standard re-TUR was not performed if TUR was macroscopically complete and muscularis propria was present in resected specimens. Conclusions: Metric substaging of T1BC was possible in all cases of 601 T1BC patients and it was a strong independent prognosticator of both PFS and CSS.
AB - Background: Reliable prognosticators for T1 bladder cancer (T1BC) are urgently needed. Objective: To compare the prognostic value of 2 substage systems for T1BC in patients treated by transurethral resection (TUR) and adjuvant bacillus Calmette-Guérin therapy. Design, setting, and participants: The slides of 601 primary T1BCs from four institutes were reviewed by 2 uropathologists and substaged according to 2 classifications: metric substage according to T1 microinvasive (T1m—lamina propria invasion <0.5 mm) and T1 extensive invasive (pT1e—invasion ≥ 0.5 mm), and according to invasion of the muscularis mucosae (MM) (T1a—invasion above or into MM/T1b). Outcome measurements and statistical analysis: Multivariable analyses for progression-free (PFS) and cancer-specific survival (CSS) were performed including substage, size, multiplicity, carcinoma in situ, sex, age, WHO-grade 1973, and WHO-grade 2004 as variables. Results: Median follow-up was 5.9 years (interquartile range: 3.3–9.0). Progression to T2BC was observed in 148 (25%) patients and 94 (16%) died of BC. The MM was not present at the invasion front in 135 (22%) of tumors. Slides were substaged as follows: 213 T1m and 388 T1e and 281 T1a and 320 T1b. On multivariable analysis, T1m/e substage and WHO 1973 grade were the strongest prognosticators for PFS (hazard ratio [HR] = 3.8 and HR = 1.8) and CSS (HR = 2.7 and HR = 2.6), respectively. Other prognostic factors for CSS were age (HR = 1.03), and tumor size (HR = 1.8). Substage according to MM-invasion was not significant. Our study was limited by its retrospective design and that standard re-TUR was not performed if TUR was macroscopically complete and muscularis propria was present in resected specimens. Conclusions: Metric substaging of T1BC was possible in all cases of 601 T1BC patients and it was a strong independent prognosticator of both PFS and CSS.
UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85047883771&origin=inward
UR - https://www.ncbi.nlm.nih.gov/pubmed/29880460
U2 - https://doi.org/10.1016/j.urolonc.2018.05.007
DO - https://doi.org/10.1016/j.urolonc.2018.05.007
M3 - Article
C2 - 29880460
SN - 1078-1439
VL - 36
SP - 361.e7-361.e13
JO - Urologic Oncology
JF - Urologic Oncology
IS - 8
ER -