FLEX January 2024

10976817, 2021, 2, Downloaded from https://aao-hnsfjournals.onlinelibrary.wiley.com/doi/10.1177/0194599820938660 by UNIVERSITY OF MINNESOTA 170 WILSON LIBRARY, Wiley Online Library on [24/09/2023]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License

Manzoor et al

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Figure2. Subtotal resection (type II, T1-weighted postcontrast). Preoperative axial (A) and coronal (B) images show a large cerebellopon tine angle (CPA) component. Postoperative axial image (C) shows decreased mass effect on the brainstem and cerebellum.

Figure3. Subtotal resection (type III, computed tomography [CT] and T1-weighted postcontrast). Coronal CT (A) showing paraganglioma (arrow). Preoperative magnetic resonance imaging (B) showing tumor extending to the hypotympanum (arrow). Postoperative imaging (C) showing resection of the hypotympanic component.

Figure4. Preoperative (A) and postoperative (B) tumor volumes, highlighted in pink, after manual contouring and automated volume analy sis. In another patient (C), the tumor margin has been drawn manually. Jugalar foramen paraganglioma is often irregular in contour.