Intracranial Aneurysms Formation After Radiotherapy for Head and Neck Cancer: a 10-year Nationwide Follow-up Study
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Background: Intracranial aneurysms after radiotherapy (RT) have previously been reported. However, the majority of studies were case reports. Therefore, we performed a nationwide study to explore the risk of radiation-induced intracranial aneurysms.
Methods: This study included patients diagnosed with head and neck cancer (ICD9: 140-149, 161). Intracranial aneurysms formation was identified using the following ICD9 codes: nonruptured cerebral aneurysm (ICD9:4373), aneurysm clipping (ICD9:3951). Patients who did not receive curative treatment and those with intracranial aneurysms before the diagnosis of head and neck cancer were excluded.
Results: In total, 70,691 patients were included in the final analysis; they were categorized into the following three groups: nasopharyngeal carcinoma (NPC) with RT, non-NPC with RT, and non-NPC without RT. Patients in the NPC with RT group had the highest risk of developing intracranial aneurysms (hazard ratio (HR) 2.57; P < 0.001). In addition, hypertension was also a risk factor of developing intracranial aneurysms (HR 2.14; P < 0.01). The mean time interval from cancer diagnosis to intracranial aneurysm formation in the NPC with RT group was 4.3 ± 3.1 years.
Conclusions: Compared with the non-NPC with RT and the non-NPC without RT groups, patients with NPC who received RT had a higher risk of developing intracranial aneurysms.
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Luzzi S, Lucifero A, Rabski J, Kadri P, Al-Mefty O Cancers (Basel). 2023; 15(8).
PMID: 37190164 PMC: 10137094. DOI: 10.3390/cancers15082235.
Characteristics of Radiation-Related Intracranial Aneurysms: A Multicenter Retrospective Study.
Huang Z, Yang W, Xiao G, Yang Z, Yu H, Wu J AJNR Am J Neuroradiol. 2023; 43(8):1131-1135.
PMID: 36920775 PMC: 9575416. DOI: 10.3174/ajnr.A7592.
Follow-Up by Transcranial Doppler After Rupture of a Giant Intracranial Aneurysm.
Lemos C, Almeida V, Soares M, Fonseca A Cureus. 2022; 14(11):e31951.
PMID: 36582551 PMC: 9795273. DOI: 10.7759/cureus.31951.
Rotim K, Splavski B, Trkanjec Z, Kalousek V, Rotim A, Sajko T Acta Clin Croat. 2021; 59(2):359-364.
PMID: 33456125 PMC: 7808237. DOI: 10.20471/acc.2020.59.02.21.