The simultaneous occurrence of seminomas is extremely rare. Only 23 cases have previously been reported. One case has been reported of extrascrotal mature teratoma following primary pure seminoma of the testis. We describe a 47-year-old patient who presented with synchronous bilateral seminomas and a left-sided, mature teratoma of the testis.
Bonnell, Harry J.
"Synchronous Bilateral Seminomas and Teratoma,"
Henry Ford Hospital Medical Journal
: Vol. 31
Available at: https://scholarlycommons.henryford.com/hfhmedjournal/vol31/iss3/10