Figure 4. comparison of CT findings: a) and c) CT scans before treatment, August 2010; b) and d) CT scans after treatment, August 2011

From

Recurrent Respiratory Papillomatosis Successfully Treated with Gefitinib: A Case Study

Kultan J., Kolek V., Fajkosova L., Hajduch M., Drabek J., Tichy T., Tachezy R.

American Journal of Medical Case Reports. 2015, 3(11), 352-358 doi:10.12691/ajmcr-3-11-2