Estimates for the area of the rhinostomy at surgery and the soft tissue fistula at three times over 6 months after 16 external dacryocystorhinostomies in 12 patients
| Case No | Estimated area of intraoperative bone aperture (mm2) | Area of soft tissue aperture (mm2) | |||
|---|---|---|---|---|---|
| Day 1 | Day 14 | Month 6 | |||
| Area (%) | Area (%) | Area (%) | |||
| Successful cases: | |||||
| 1 | 148 | 91 (61%) | 87 (59%) | 84 (57%) | |
| 2 | 144 | 99 (69%) | 50 (35%) | 30 (21%) | |
| 3 | 380 | 198 (52%) | 130 (34%) | 52 (14%) | |
| 4 | 340 | 252 (74%) | 195 (57%) | 84 (25%) | |
| 6 | 100 | 72 (72%) | 72 (72%) | 72 (72%) | |
| 7 | 174 | 145 (83%) | 98 (56%) | 98 (56%) | |
| 8 | 306 | 240 (78%) | 180 (59%) | 126 (41%) | |
| 9 | 240 | 189 (79%) | 162 (68%) | 115 (48%) | |
| 10 | 262 | 247 (94%) | 208 (79%) | 156 (60%) | |
| 11 | 210 | 187 (89%) | 144 (69%) | 138 (66%) | |
| 12 | 255 | 108 (42%) | 84 (33%) | 80 (31%) | |
| 13 | 255 | 117 (46%) | 70 (27%) | 50 (20%) | |
| 15 | 248 | 120 (48%) | 27 (11%) | 12 (5%) | |
| 16 | 288 | 85 (30%) | 42 (15%) | 36 (13%) | |
| Mean (n=14) | 240 | 153 (64%) | 111 (46%) | 81 (34%) | |
| Unsuccessful cases: | |||||
| 5 | 208 | 64 (31%) | 10 (5%) | 4 (2%) | |
| 14 | 210 | 88 (42%) | 8 (4%) | 3 (1%) | |
| Mean (n=2) | 209 | 76 (36%) | 9 (4%) | 3.5 (2%) | |
↵Percentages expressed as proportion of the area of rhinostomy.