Type

Number

Percentage

Patients

Prevalence

Course

65^*

77.4% (65/84)

63^*

9.5% (63/663)

Origin

14

16.7% (14/84)

14

2.1% (14/663)

Distal ending

5

5.9% (5/84)

5

0.8% (5/663)

Total

84

80^**

12.1%^** (80/663)