“…Although our youngest patient was only 28 years old, and sporadic cases have been observed even in children (Turley and Moore, 1952;Waddell, 1961), the majority are in the fifth to seventh decades of life. Bilateral testicular involvement is commoner in lymphoma, more than 50% of recorded bilateral tumours falling into this category (Hotchkiss and Laury, 1950;Abeshouse et al, 1955). In our 665 cases there were six bilateral tumours, of which five were lymphomas.…”