What are seminomas?

Most common histologic type overall 3 types: Classic (or Typical): 82 to 85 % of all seminomas Anaplastic Spermatocytic (mainly in older men - no cases of metastasis) Elevated HCG in 10 to 15% Risk factors: Tumor > 6 cm Vascular/lymphatic invasion No place for Retroperitoneal lymph node dissection (RPLND(