Main results
The most common area for IP in our cohort was the maxillary sinus (33%)
which is displayed in Table 1. Recurrence was most common in the frontal
and maxillary sinuses and the most common procedure performed was a
medial maxillectomy (30%).
After 5 years of follow-up, there were a total of 21 recurrences in our
cohort (figure 1) – these consisted of 6 recurrences in primary cases
and 15 recurrences in secondary cases. When the number of recurrences
between primary and secondary cases was compared, the difference was
found to be statistically significant (X2(1, n=40)=
19.1583, p = 0.000412). A range of 1-2 episodes of recurrence were seen
in each primary case, compared to 1-7 episodes in each secondary case.
On average, recurrence was detected within 20 and 39 months in primary
and secondary cases respectively. Most recurrences were treated with
local resection (50%) or topical intranasal mitomycin (20%). Regarding
complications, there was 1 case of intra-operative CSF leak (repaired
intra-operatively) and 1 case of temporary post-operative facial
numbness.