Final answer:
Peliosis of the liver option (a) is a rare but life-threatening condition associated with the use of androgenic steroids, characterized by the formation of blood-filled cysts in the liver.
Step-by-step explanation:
During a counseling session for a group of teenage athletes, the nurse will explain that peliosis of the liver option (a) is a rare but devastating effect of androgenic steroid use. This condition involves the formation of blood-filled cysts within the liver that can rupture, leading to life-threatening hemorrhage. Androgenic steroids are known to cause several serious side effects, a fact that is significant when considering the health of athletes who might misuse these substances for performance enhancement.