Missed torsion in undescended testes detected by scintigraphy: testicular scintigraphy a decisive complementary tool.

Torsion of undescended testis, although not uncommon, causes diagnostic difficulties. We here present testicular scintigraphy images of a typical case of torsion of an undescended inguinal testis with disparity between clinical and ultrasonography (USG) findings in the contralateral retractile testis.