Testicular Regression Syndrome (TRS) is defined as the absence or an
incomplete development of the testis of varying degrees in 46XY patients
with normal external genitalia. The prevalence ranges from 3-20% of cases
previously diagnosed as cryptorchidism. We report the case of a 7-year-old boy
who underwent surgical exploration with an initial diagnosis of cryptorchidism.
Testicular structure was not identified and presumed testicular remnants were
sent for histological analysis. The histological sections showed a fibrovascular
nodule, structures of the spermatic cord and calcification, supporting the
diagnosis of TRS.
