{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T18:13:27Z","timestamp":1788545607732,"version":"build-2803163510"},"reference-count":18,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,6,29]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>Periaortitis is an inflammatory condition surrounding the aorta, classified as either idiopathic or secondary to well-defined causes; it typically requires treatment with glucocorticoids (GC) and\/or immunosuppressants. We report four cases of transient aortitis\/periaortitis and summarise their characteristics and clinical courses. The four patients were all women (age range, 37\u201380\u00a0years). All patients had fever; three had dry cough and two experienced back or neck pain near the affected aortic site. At diagnosis, computed tomography revealed eccentric low-density areas in the periaortic space in all cases, involving the aortic arch or descending thoracic aorta in three patients. No carotid artery involvement was observed. One patient received low-dose GC for erythema nodosum, whereas the others did not receive GC or immunosuppressants. The C-reactive protein level was elevated in all cases. Symptoms and the CRP levels typically improved within ~1 month, and follow-up computed tomography performed within ~3 months showed resolution in all cases. These four cases suggest the presence of a transient form of aortitis\/periaortitis that improves without high-dose GC or immunosuppressants. Notably, the thoracic aorta was predominantly affected, which is an unusual finding in chronic periaortitis. These cases may overlap with a spontaneous form of isolated aortitis and share informative features with transient perivascular inflammation of the carotid artery syndrome and granulocyte colony-stimulating factor-induced aortitis. Awareness of this condition may reduce unnecessary diagnostic workup and overtreatment; thus, additional case accumulation and further research are warranted to clarify its clinical spectrum and pathogenesis.<\/jats:p>","DOI":"10.1093\/mrcr\/rxag079","type":"journal-article","created":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T11:51:22Z","timestamp":1787313082000},"source":"Crossref","is-referenced-by-count":0,"title":["Transient aortitis\/periaortitis with spontaneous resolution: Report of four cases"],"prefix":"10.1093","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-5717-2477","authenticated-orcid":false,"given":"Yoshikazu","family":"Motomura","sequence":"first","affiliation":[{"name":"Department of Rheumatology, Kameda Medical Center , Kamogawa ,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nobuhiro","family":"Oda","sequence":"additional","affiliation":[{"name":"Department of Rheumatology, Kameda Medical Center , 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