This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Orchidectomy is not done in - 
Select and explain. 
A. Prostate cancer, B. Seminoma testes, C. Filarial epididemo-orchitis, D. Male breast cancer
C: Filarial epididemo-orchitis
Answer: C: Filarial epididemo-orchitis 
Explanation: Flarial epididymoorchitis is tit with a course of Diethylcarbamazine 6 mg/kg/day along with antibiotics and anti-inflammatory drugs.
Seminoma testis and Prostatic Ca are well known indications of orchiectomy. Orchiectomy in seminoma testis is curative as well as diagnostic, while in prostate Ca it is palliative (B/L orchiectomy is done for androgen ablation). " Orchiectomy is also done in male breast cancer to induce remission of metastatic ds." - Schwartz, 7/e p591.