[LH-RH nasal spray (Kryptocur), a new aspect in the hormonal treatment of undescended testes (author's transl)].

New aspects in the hormonal treatment of undescended testes have been introduced with the LH-RH nasal spray. There are 188 references on boys with 232 retained testes. A four-weeks' course with LH-RH nasal spray (1.2 mg in 24 hours) resulted in complete descension in 52% of the cases (32%-87%). In 21% of the cases, the position of the testes was improved. No success was recorded in 27% of the cases only. The author's own patients material included 40 boys with 50 maldescended testes, success being recorded in 78% of the cases. Administration of LH-RH nasal spray did not produce any side effects. Today, this method can be considered as the method of first choice in the hormonal treatment of undescended testes.