The main prognostic factor on histology for NSGCT is lymphovascular invasion.
Previous EAU guidelines suggested % embryonal (>50%) and proliferative index, but these have been taken away from current edition.
Overall risk of relapse after orchidectomy is about 30 %
Approx 50 % risk of relapse with LVI vs 15 % without LVI
Options for management of stage 1 NSGCT:
- Surveillance
- Adjuvant chemotherapy
- Primary RPLND
Surveillance
- Risks of relapse as above – > 90 % of relapses occur in first two years
- Tumour markers alone are unreliable for detecting relapse
- Frequent CT and very frequent tumours markers, quite arduous
Chemotherapy
- 1 cycle of BEP has shown to reduce recurrence rates to 2 – 3 %
- 2008 German RCT showed 2 year RFS 99 % with BEP vs 91 % RPLND
- Toxicity – lung toxicity, fertility, renal dysfunction, tinnitus
- Not suitable for teratoma
Primary RPLND
- Was historically the preferred adjuvant option prior to chemotherapy
- Stronger indications include presence of teratoma on primary, or patients unwilling/unable to undergo chemotherapy now or later
- 18 – 30 % of patients will have disease, and a third of them may still recur later
- ? do these patients then get chemo anyway
- Associated issues with major surgery, as well as retrograde ejaculation and adhesions
- Nerve sparing and minimally invasive surgery aim to minimise morbidity
- Less demanding follow up after surgery cf. surveillance
EAU guideline for stage 1 NSGCT:
- Risk stratify by LVI (differentiates 1a/T1 and 1b/T2+)
- Offer surveillance for stage 1a; or 1 x BEP for those unwilling/unsuitable for surveillance
- Offer 1 x BEP for stage 1b; or surveillance for those unwilling; or RPLND for those unsuitable for chemo and unwilling to be surveilled
- Primary RPLND should be considered if malignant teratoma