Abstract
529 Background: Late relapses (LR) of non-seminomatous germ cell tumours (NSGCT), defined as those occurring after a disease free interval of 2 years, are increasingly recognised. We reviewed the features of LR in NSGCT within a tertiary referral testicular cancer service. Methods: 3,064 patients (pts) were referred to the testis multi-disciplinary team (January 2005 to Dec 2017). Pts who experienced a LR where initial pathology demonstrated NSGCT were identified. Data of their original and late presentation and management was reviewed from patient electronic records. Results: Of the 3,064 pts, 101 (3.3%) had a LR, with 43 pts (43%) relapsing after 10 years. 36 were symptomatic and 39 had raised markers (AFP 29, HCG 9, both 1). Table 1 shows stage at initial presentation and time to relapse. As regards treatment before late relapse, 13 CS1 patients had received prior chemotherapy (Cht) (8 as adjuvant and 5 Cht for early relapse). 59/60 CS2/3 patients received Cht as primary treatment and 41 had a post chemotherapy retroperitoneal lymph node dissection(PC-RPLND (bilateral template in 12). 20 of these 41 men who had a PC-RPLND experienced a LR in the retroperitoneum (6 after bilateral template) Patient management at relapse is summarised in table.Time to recurrence was longer in CS2/3 patients (p<0.001). 84 surgical procedures were [performed in 82 patients; histology was TD in 43, Yolk sac 14, De-differentiated in 7 and viable GCT in 12, benign 8. To date 22 patients have died, 13 of these patients relapsed at multiple sites. Conclusions: LR of NSGCT frequently occurs after an extended interval and typically occurs earlier in CS1 disease compared to higher stages. Aggressive surgery +/- chemotherapy can cure most patients. [Table: see text]
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