Long-term outcomes of penile squamous cell carcinoma in men age ≤50 years old compared with men >50 years old from a single tertiary referral centre: a propensity score matched analysis.

ABSTRACT

Penile cancer (PeCa) is rare, and the oncological outcomes in younger men are unclear. We aimed to analyse and compare oncological outcomes of men age ≤50 years (y) and >50 years with PeCa. A retrospective analysis of men ≤50 y with penile squamous cell carcinoma managed at a tertiary centre was performed. A propensity score matched cohort of men >50 y was identified for comparison. Matching was according to tumour, nodal stage and the types of primary surgery. Overall survival (OS), disease-specific survival (DSS), recurrence-free survival (RFS), and metastasis-free survivals (MFS) were estimated using Kaplan-Meier plots and compared using log-rank tests. Between 2005-2020, 100 men ≤50 y (median (IQR) age, 46 y (40-49)) were identified and matched with 100 men >50 y (median (IQR) age, 65 y (59-73)). 10, 24, 32, 34 men age ≤50 y were diagnosed in 2005-2007, 2008-2012, 2013-2016 and 2017-2020 respectively. Median (IQR) follow-up was 53.5 (18-96) months. OS at 2 years ≤50 y, 86%>50 y, 80.6%; 5 years ≤50 y, 78.1%, >50 y, 63.1%; 10 years ≤50 y, 72.3%, >50 y, 45.6% (p = 0.01). DSS at 2 years ≤50 y, 87.2%>50 y, 87.8%; 5 years ≤50 y, 80.9%>50 y, 78.2%; 10 years ≤50 y, 78%, >50 y, 70.9% (p = 0.74). RFS was 93.1% in the ≤50 y group (vs. >50 y, 96.5%) at 2 year, and 90% (vs. >50 y, 88.5%) at 5 years, p = 0.81. Within the ≤50 y group, 2 years and 5 years MFS was 93% (vs. >50 y, 96.5%), and 89.5% (vs. >50 y, 92.7%) respectively, (p = 0.40). There were no statistical significance in DFS, RFS and MFS in men age ≤50 y and >50 y. PeCa in younger patients is fatal, public awareness and patient education are crucial for early detection and management.