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Table 2 Symptoms before diagnosis in MPS III Subtypes

From: Natural history of Sanfilippo syndrome in Spain

Symptoms before diagnosis

MPS Subtype (N°)

N° casos

Median

A

B

C

Age

(Range)

Coarse facial features

24

9

9

42

78%

3 years

( 1 – 4 y)

Recurrent diarrhea

17

4

6

27

50%

2 years

(1 – 4.5 y)

Umbilical hernia

7

4

1

12

22%

1 months

(0 – 8 months)

Inguinal hernia

4

0

0

4

7%

1,6 year

( 0–3 y)

Recurrent otitis

15

5

5

25

46%

1 year

(0–3.5 y)

Hearing loss

12

2

6

11

30%

2.2 year

(1.5 – 6 y)

Adenoidectomy

14

2

7

23

43%

3 year

(2 – 6 y)

Tonsillectomy

8

3

4

15

28%

3.8 year

(2 – 9 y)

Speech delayed

27

11

8

46

85%

3 year

(2.5 – 7 y)

Hyperactivity

21

6

8

35

65%

3 year

(1.5 – 10 y)

Sleep disorders

14

5

5

24

44%

1 year

( 2 months -6 y)