Tubular ectasia of the rete testis: diagnostic sonographic features

Tubular ectasia of the rete testis is a benign condition, also known as cystic transformation of the rete testis. It results from dilatation of efferent tubules which causes ectasia and cystic formation. The main significance of this condition is that it must be differentiated from testicular neoplasms. Knowledge of this entity and its associated conditions in addition to recognition of their characteristic sonographic features can aid making appropriate diagnosis and avoid the need for biopsy or orchiectomy. The subject of this study were 12 patients examined for testicular pain, palpable cyst or varicocele, all were examined on presentation by ultrasound, color and power Doppler. Same regimen was used in repeated US follow-up. All the patients showed the classical appearances of multiple cystic tubular structures with absent mass effect and absent capsule. All showed absent flow on color Doppler with no significant changes on follow-up Ultrasound. 5 patients showed bilateral asymmetrical affection. Only one of the 12 patients was referred for post-operative follow-up, none were referred for palpable solid tumor. This regimen allowed proper diagnosis of benign tubular ectasia of the rete testis and hence avoidance of biopsy and orchiectomy