PMID- 37164808 OWN - NLM STAT- MEDLINE DCOM- 20230703 LR - 20231122 IS - 1365-229X (Electronic) IS - 0009-9260 (Linking) VI - 78 IP - 8 DP - 2023 Aug TI - Image findings of anti-neutrophil cytoplasmic antibody-associated vasculitis involving the skull base. PG - e568-e573 LID - S0009-9260(23)00145-9 [pii] LID - 10.1016/j.crad.2023.04.004 [doi] AB - AIM: To investigate computed tomography (CT) and magnetic resonance imaging (MRI) features of skull bases involving anti-neutrophil cytoplasmic antibody (ANCA)-associated vasculitides (AAV). MATERIALS AND METHODS: A retrospective review was undertaken to identify an institutional historical cohort of 17 patients with confirmed AAV who underwent CT or MRI and had skull base involvement between 2002 and 2021. Two radiologists reviewed the extent and features of the lesions, bone changes, and other MRI findings. RESULTS: A total of 17 patients (12 men; mean age +/- standard deviation, 46.5 +/- 17.1 years) were selected. AAV presented as infiltrative lesions with involvement at various sites. Most cases involved the paranasal sinuses (PNS; 88%, 15/17), nasopharynx (88%, 15/17), pterygopalatine fossa (82%, 14/17), and parapharyngeal space (82%, 14/17), frequently accompanied by mucosal irregularity of the PNS and nasopharynx (71%, 12/17). Central skull base and temporal bone involvement were seen in 53% (9/17) and 38% (6/16) of cases, respectively. On T1-weighted imaging (WI) and T2WI MRI, all lesions (15/15) showed predominant signal iso-intensity to grey matter. CONCLUSIONS: Although radiological findings of AAV are non-specific and skull base involvement is less common, AAV may be considered if infiltrative lesions predominantly involving the PNS, nasopharynx, pterygopalatine fossa, and parapharyngeal space with combined bone changes of skull base are seen. CI - Copyright (c) 2023. Published by Elsevier Ltd. FAU - Yun, S Y AU - Yun SY AD - Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; Department of Radiology, Inje University Busan Paik Hospital, Busan, Republic of Korea. FAU - Choi, Y J AU - Choi YJ AD - Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. Electronic address: jehee23@gmail.com. FAU - Chung, S R AU - Chung SR AD - Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. FAU - Suh, C H AU - Suh CH AD - Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. FAU - Kim, S C AU - Kim SC AD - Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. FAU - Lee, J H AU - Lee JH AD - Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. FAU - Baek, J H AU - Baek JH AD - Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea. LA - eng PT - Journal Article DEP - 20230423 PL - England TA - Clin Radiol JT - Clinical radiology JID - 1306016 SB - IM MH - Male MH - Humans MH - Skull Base MH - Tomography, X-Ray Computed/methods MH - *Paranasal Sinuses/pathology MH - *Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/diagnostic imaging/pathology MH - Magnetic Resonance Imaging/methods MH - Retrospective Studies EDAT- 2023/05/11 00:41 MHDA- 2023/07/03 06:41 CRDT- 2023/05/10 21:59 PHST- 2022/07/28 00:00 [received] PHST- 2023/02/02 00:00 [revised] PHST- 2023/04/05 00:00 [accepted] PHST- 2023/07/03 06:41 [medline] PHST- 2023/05/11 00:41 [pubmed] PHST- 2023/05/10 21:59 [entrez] AID - S0009-9260(23)00145-9 [pii] AID - 10.1016/j.crad.2023.04.004 [doi] PST - ppublish SO - Clin Radiol. 2023 Aug;78(8):e568-e573. doi: 10.1016/j.crad.2023.04.004. Epub 2023 Apr 23.