Ectasia of rete testis is a network of tubules carrying sperms from the seminiferous tubules to the efferent ductules. Ectasia of the rete testis is a benign condition, usually found in older men, involving numerous small tubular cystic structures within the rete testis. Obstruction may be the common underlying factor. It is commonly associated with epididymal cysts, and epididymitis.
Epididymitis is the inflammation or infection of the epididymis. It is the most common cause of acute scrotal pain and tenderness. The patient presents with fever and painful urination. Severe infection can lead to the development of an abscess in the epidiymis or testicle. Sonographically, acute epididymitis usually shows enlargement of the epididymal head, but 50% of cases will involve the whole epididymis. With chronic epididymitis, the patient will have a history of chronic urinary tract infections and reoccurring scrotal pain.
In this patient moderate hydrocele was also seen, which is a collection of fluid located between the visceral and parietal layers of the tunica vaginalis or along the spermatic cord. Hydrocele are the most common cause of painless scrotal swelling. Ocassionally, small particles and septations are seen in the fluid because of cholesterol crystals, infection, or hemorrhage. Hydrocele can be congenital or acquired. Congenital hydroceles result from an open communication between the peritoneum and srotal sac, called a patent processus vaginalis. It usually resolves by 18 to 24 months. Acquired hydroceles can be caused by inflammation, neoplasm, or trauma.