Year

Number of patients

Complications (%)

Mortality rate (%)

Histological diagnosis (%)

Change in treatment (%)

1997

47

51

24

64

-

Davies et al. [22]

1997

121

28

5

95

-

Neuhaus et al. [24]

1998

26

8

38

96

69

Steinberg et al. [26]

1999

27

11

0

93

56

Coren et al. [23]

2003

12

25

0

100

83

Chan et al. [25]

2013

33

24

12

79

48

Greenhalgh et al. [21]

2015

64

50

5/1

89

57

Current study