Another unusual presentation of McCune Albright syndrome with fibrous dysplasia, unilateral testicular enlargement, and testicular microlithiasis.

We report on a 9-year-old boy with atypical McCune Albright syndrome who presented with polyostotic fibrous dysplasia, unilateral testicular enlargement without signs of sexual precocity, and bilateral testicular microlithiasis on sonography. This is the first report of a patient with an atypical form of MAS presenting with unilateral testicular enlargement not associated with sexual precocity, and with testicular microlithiasis.