Cystic dysplasia of the rete testis in adulthood: a case report and review of the literature.

Background: Rete testis dysplasia is a cystic anomaly arising from the rete testis presenting normally in the pediatric population. These cases usually regress spontaneously without the need for surgical intervention. There are rare, reported cases of rete testis dysplasia in adulthood, which have been managed surgically. Case presentation: A 58-year-old man presented with lower urinary tracts symptoms and found to have a slightly larger right testicle namely in the lower pole near the epididymis. Investigation was done using ultrasound of the testicles with Doppler showing an 8 mm cyst contained in 16.5×12.1 mm cystic dysplasia near the rete testis. MRI of the testicles revealed a small intratesticular cyst with adjacent band-like signals, in keeping with rete testis dysplasia. This patient was placed under surveillance and the rete testis dysplasia is stable after 6 months and will not be operated on unless progression on ultrasound is encountered. Clinical discussion: The management of cystic dysplasia of the rete testis has been evolving with time. While there have never been clear-cut guidelines on the treatment of this condition, a radical orchiectomy of the affected testicle had traditionally been the preferred treatment option. There have only been three case reports of cystic dysplasia of the rete testis in adults, none of which are known to have been managed by observation. Conclusion: In conclusion, the authors report a unique case of rete testis dysplasia being managed conservatively showing the benign features of such a pathology, which may be actively surveyed through sequential imaging.