Recurrence patterns in bladder cancer patients with no residual disease (pT0N0) at radical cystectomy.

Authors

null

Seyedeh Sanam Ladi Seyedian

USC Institute of Urology, USC/Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA

Seyedeh Sanam Ladi Seyedian , Antoin Douglawi , Ryan Lee , Muhannad Alsyouf , Alireza Ghoreifi , Sumeet Bhanvadia , Anne K. Schuckman , Hooman Djaladat , Siamak Daneshmand

Organizations

USC Institute of Urology, USC/Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, University of Southern California, Los Angeles, CA, USC/Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, Keck Hospital of USC, Los Angeles, CA, USC Norris Comprehensive Cancer Center, Los Angeles, CA

Research Funding

No funding received

Background: Bladder cancer patients can achieve no residual disease status at the time of radical cystectomy (RC) following transurethral resection (TURBT) alone (pT0) or neoadjuvant chemotherapy (NAC) (ypT0). This population has favorable survival potential, yet limited data is available on their oncological outcomes. We examined the recurrence patterns in these patients and the implications for post-operative surveillance. Methods: A retrospective review of our IRB-approved bladder cancer database identified patients who underwent RC between 2000 - 2019 and were found to have no residual disease (pT0N0). The primary outcome was recurrence-free survival (RFS). Results: A total of 234 patients with a median age of 67 years were included. NAC was used in 89 (38%) patients and 145 (62%) cases were rendered pT0 following TURBT alone. After a median follow up of 44 months, 6/145 (4%) pT0 patients and 10/89 (11.2%) ypT0 cases developed a recurrence. None of the pT0 patients with previous history of clinical Ta/Tis disease had a recurrence after RC. The median time to recurrence was 9 months. All but one of the recurrences in the ypT0 group were within 2 years of cystectomy, while half of the recurrences in the pT0 group occurred after 2 years. Patients with ypT0 had worse 2- and 5-year RFS compared to the pT0 group (85% and 84% vs. 99% and 95%, respectively; p=0.003). Variant histology was noted in 49 (21%) patients and the recurrence rate was higher in this subgroup compared to those with pure urothelial carcinoma (12.2% vs. 5.4%, p = 0.02). Lung metastasis and involvement of distant organs, while rare, was noted at similar rates in both groups (Table). On univariate Cox regression analysis of RFS, clinical T stage > 3 (HR: 6.5, 95%CI: 2.4 – 17.3, p<0.001) and NAC (HR: 4.3, 95%CI: 1.5 – 12.5, p = 0.007) were associated with increased risk of recurrence. Conclusions: Most patients with pT0N0 pathology at the time of cystectomy are cured however metastasis can still develop up to 4 years after surgery. Patients achieving ypT0 after NAC exhibit worse prognosis and shorter times to recurrence, and closer follow-up may be considered.

Detailed recurrence data ordered by time to recurrence.

Surgery

Date
Clinical

Stage
Variant Histology
NAC
Time to Recurrence (months)
Recurrence Location
2018
T2
Sarcomatoid
GC
1.9
Lungs, Mediastinal, RP Nodes
2012
T2
Sarcomatoid
None
2.7
Lungs, Pelvic, RP Nodes
2013
T3
No
GC
4.8
Carcinomatosis
2010
T2
Neuroendocrine
GC
5
Liver
2013
T4
No
GC
5.4
Pelvic Nodule
2016
T3
No
GC
6.9
Rectum
2015
T1
No
None
7.7
Lungs
2017
T4
No
ddMVAC
9
Brain
2015
T4
Plasmacytoid/Glandular
GC
9.1
Sigmoid Colon
2001
T1
No
None
11.8
Pelvic Nodule
2015
T2N1
No
GC
20.8
RP Nodes
2008
T3
Glandular
ddMVAC
24
Lungs
2011
T3
Signet cell/Plasmacytoid
MVAC
34.4
Rectum
2011
T2
No
None
39.3
Lungs
2011
T1
No
None
43.3
Bone, Liver, Adrenal gland
2000
T2
No
None
49.9
Vaginal Wall

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Abstract Details

Meeting

2022 ASCO Genitourinary Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session B: Urothelial Carcinoma

Track

Urothelial Carcinoma

Sub Track

Other

Citation

J Clin Oncol 40, 2022 (suppl 6; abstr 576)

DOI

10.1200/JCO.2022.40.6_suppl.576

Abstract #

576

Poster Bd #

L4

Abstract Disclosures

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