Sinus Computed Tomography Imaging in Pediatric Cystic Fibrosis: Added Value?

Study Objective

To evaluate the prevalence of computed tomography (CT) sinus imaging in a pediatric cystic fibrosis (CF) population, determine changes in Lund Mackay (LM) scores over time, and estimate radiation exposure.

Study Design

Case series with chart review.

Setting

Tertiary care children's hospital.

Subjects and Methods

In total, 202 pediatric patients with CF who underwent endoscopic sinus surgery (ESS) were included. The total number of CT scans was calculated for each patient, with specific focus on the indications for and subsequent outcomes of the sinus CT scan subgroup.

Results

Patients underwent a total of 1718 CT scans, 832 of which were sinus CT scans (mean of 4.2 sinus scans per patient). Disease evaluation (54%) and preoperative planning (35%) were the most common indications. Otolaryngologists were more likely to order imaging for preoperative evaluation, and those scans were more likely to result in surgery compared with those requested by other physicians (P < .001). Ninety CT scans (10.8%) led to no change in management. There was no significant difference in LM scores between patients admitted to the hospital or prescribed antibiotics and those who were not. There was also no significant change in LM score following ESS after adjusting for age and sex (P = .23).

Conclusion

Based on LM scores, all sinus CT scans in patients with CF reveal moderate to severe sinus disease. Effort should be made to minimize radiation exposure in patients with CF by limiting sinus CT scans to the preoperative context or for evaluation of potential sinusitis complications.

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