TABLE 3.

Treatment success rate, secondary interventions, and complications.

	Non-invasive (n = 29)	Invasive (n = 41)
Treatment success (overall)
- Small (<3 cm)	7/7 (100%)	1/1 (100%)
- Medium (3–6 cm)	12/15 (80%)	8/12 (67%)
- Large (>6 cm)	2/3 (67%)	10/16 (63%)
- Multiple	0/3 (0%)	7/11 (64%)
- Unknown size	0/1 (0%)	1/1 (100%)
Persistent/recurrent abscess	7 (24%)	9 (22%)
Secondary interventions
- Percutaneous drainage	5	5
- Open drainage	1	2
- Laparoscopic drainage	1	–
- Oral antibiotics (outpatient clinic)	–	1
- IV antibiotics + admission	–	1
- Intervention for other complication	1	5
Other complications
- Ileus	–	3 (2x CD-III, 1x CD-II
- Surgical Site Infection	–	1 (CD-III)
- Incisional hernia	–	1 (CD-III)
- CVC related infection	–	1 (CD-II)
- Pleural empyema	1 (CD-III)	–
- Fistula	1 (CD-II)	–
- Suspicion of bowel perforation	–	1 (CD-III)
- Fever	–	1 (CD-II)
- Vaginal blood loss after transrectal drainage procedure	–	1 (CD-I)

Data is displayed as count (percentage).

CD, clavien-dindo; CVC, central venous catheter; IV, intravenous.