Table 2 Postoperative complications according to Clavien Dindo Classification and the CTCAE.v5

Clavien Dindo classification

 Grade 0

61 (47%)

 Grade 1

38 (29%)

 Grade 2

13 (10%)

 Grade 3

18 (14%)

CTCAE.v5

 Grade 0

63 (48%)

 Overall grade ≥ 2 complication

67 (52%)

 Any grade 3 complication

23 (18%)

Wound (infection/dehiscence)

13 (10%)

 Grade 2 (treated conservatively)

4

 Grade 3 (required surgical intervention)

9

Bleeding required surgical intervention

4 (3%)

 Grade 2 (treated conservatively)

0

 Grade 3 (required surgical intervention)

4

Fistula required surgical intervention

4 (3%)

 Grade 2 (treated conservatively)

0

 Grade 3 (required surgical intervention)

4

Chyle leak

2 (1.5%)

 Grade 2 (treated conservatively)

2

 Grade 3 (required surgical intervention)

0

Shoulder problems

52 (40%)

 Grade 2

51

 Grade 3 (frozen shoulder)

1

Pneumonia

8 (6%)

 Grade 2 (treated with antibiotics at out-patient clinic)

6

 Grade 3 (required admission for intravenous antibiotics)

2

Tracheotomy (G3)

6 (4.5%)

 Duration of tracheotomy; median (range), in days

16 (12–270)

Feeding tube dependency (G3) all

9 (7%)

Feeding tube already exist before salvage ND

5 (4%)

 Duration of feeding tube; median (range) in days

180 (150–570)

Feeding tube developed after salvage ND

4 (3%)

 Duration of feeding tube; median (range) in days

45 (10–62)