This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
[{'content': 'Anorcha is best diagnosed by ? \nSelect and explain. \nA. USG, B. SPECT, C. CT, D. Laparoscopy', 'role': 'user'}, {'content': "Answer: D \nExplanation: Anorchism is a condition where there is complete agenesis of testis. It is one of the causes for maldescended testis(one that cannot be made to touch the bottom of the scrotum ) along with undescended testis, cryptorchidism and ectopic testis. Vanishing testis - testis develops but disappears before bih probably due to prenatal torsion.True agenesis of the testis is rarer. Laparoscopy is useful in distinguishing these causes of clinically absent testis from intra-abdominal maldescent.Reference : page 1079 SRB's manual of surgery 5th edition and page 1379 Bailey and Love's sho practice of surgery 25th edition", 'role': 'assistant'}]