Spontaneous regression of cystic dysplasia of the testis.

Abstract

A 9-year-old boy with left multicystic dysplastic kidney and the VATER (vertebral defects, imperforate anus, tracheoesophageal fistula, and radial and renal dysplasia) syndrome presented with an enlarging left testis, and negative serum -fetoprotein and -human chorionic gonadotropin. Because construction of a catheterizable stoma was planned, the patient underwent exploration rather than ultrasound. The left testis, including the rete testis, was cystic and measurement with calipers showed a size of 2.4 1.9 1.5 cm. (4.9 cc). Due to lesion proximity to the epididymis the testis was not biopsied but replaced in the scrotum. At age 9 years 8 months scrotal ultrasound showed that the left testis was 5 times larger than the right testis, that is 7.2 versus 1.3 cc according to the Lambert formula (fig. 1). At age 10 years 4 months testis volumes had increased to 8.8 and 1.9 cc, respectively. At age 11 years 8 months the left testis was 9.4 cc but the right had also enlarged to 4.8 cc. The areas of cystic dysplasia had completely resolved and were replaced by normal appearing parenchyma (fig. 2). At age 13 years the left testis was 8.7 cc and the right testis was 6.7 cc without evidence of recurrent cysts.