This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Testis & Scrotum), Subject name: Surgery
[{'content': 'Young male scrotal swelling since 3 yrs on examination fluctuant swelling testis not separately felt. No trauma or fever. Diagnosis - \nSelect and explain. \nA. Vaginal hydrocele, B. Hemorchitis, C. Ca testis, D. Varicocele', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Vaginal hydorcele o Vaginal hydroceleThis is common type of hydrocele; whee acumulation of fluid occurs between the layers of tunica vaginalis in scrotum. These may! be of Pvo types : Primary and secondary?In primary vaginal hydrocele, often there is not definite cause.Secondary vaginal hydrocele accompanies disease of the testis and/or epididymis. The common causes of secondary hydrocele are epididymo-orhitis, trauma and testicular neoplasm.", 'role': 'assistant'}]