Table 1 Main outcome measures for children with cryptorchidism as a whole, and divided in UT and RT subgroups.

Spontaneous resolution

13/127 (10%)

14/41 (34%)

- Mean age at resolution, in months (SD; range)

21.6 (10.8; 9.6-40.8)

27.6 (13.2; 6-46.8)

- Age at spontaneous resolution, categories:

   • Between 6 and 11 months

4 (31%)

2 (14%)

   • Between 12 and 23 months

3 (23%)

5 (36%)

   • 24 months or more

6 (46%)

7 (50%)

Hormonal treatment (as pre-surgical or unique treatment)

29/127 (23%)

4/41 (10%)

   - hCG

16/29 (55%)

2/4 (50%)

   - LHRH

13/29 (45%)

2/4 (50%)

Mean age at beginning of hormonal treatment, in months (md = 1) (SD; range)

20.4 (13.2; 6-50.4)

30 (7.2; 20.4-36)

- Mean age at beginning of hCG, in months (md = 1)

24 (13.2; 6-50.4)

30 (3.6; 43.2-33.6)

- Mean age at beginning of LHRH, in months

15.6 (10.8.; 6-42)

28.8 (10.8; 20.4-36)

Descend of testis after hormonal treatment

7/28 (25%)*

1/4 (25%)

Surgical treatment

88/126 (70%)

10/40 (25%)**

- Mean age at surgery, in months (md = 1) (SD; range)

22.8 (10.8; 1.2-56.4)

27.6 (10.8; 12-46.8)

- Age at surgery, categories (md = 1):

   • before 6 months

3 (3%)

-

   • between 6 and 11 months

9 (10%)

1 (10%)

   • between 12 and 23 months

44 (51%)

4 (40%)

   • 24 months or more

31 (36%)

5 (50%)

- Carried out in paediatric surgery center

79/88 (90%)

8/10 (80%)

- Carried out in paediatric surgery center < 12 months

12/12 (100%)

1/1 (100%)

- Carried out in the Region where child lived (md = 4)

74/85 (87%)

8/9 (89%)

- Scheduled orchidopexy

7/126 (6%)

4/40 (10%)

Surgery outcome

   - Descended testis

80/88 (91%)

10/10 (100%)

   - Need for second surgery

2/88 (2%)

-

   - Anorchia and prosthesis positioning

1/88 (1%)

-

   - Outcome not clear/not specified

5/88 (6%)

-

Post-surgery hormonal treatment

11/126 (9%)

-

   - hCG

10/11 (91%)

   - LHRH

1/11 (9%)