This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urethra & Penis, Subject name: Surgery
A 40 year old male, scrotal swelling. Exam - bag of worms swelling present. Which structure is responsible: 
Select and explain. 
A. Pampiniform plexus of veins, B. Testicular artery + Pampiniform plexus of veins, C. Spermatic cord + Testicular artery, D. Testicular vein + Testicular artery
A: Pampiniform plexus of veins
Answer: A: Pampiniform plexus of veins 
Explanation: Ans. (a) Pampiniform plexus of veinsRef: Bailey 26th Edition, Page 1381* Varicocele is a varicose dilatation of the veins draining the testis. Vein draining the testis and epididymis form the pampiniform plexus