{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T05:13:29Z","timestamp":1783660409141,"version":"3.55.0"},"reference-count":24,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T00:00:00Z","timestamp":1783641600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Med."],"abstract":"<jats:p>Thoracic endovascular aortic repair (TEVAR) has become the primary treatment for Stanford type B aortic dissection. The differential diagnosis of postoperative periaortic masses typically focuses on hematoma, endoleak, or graft infection. We report the case of a patient who underwent repeat TEVAR for stent-graft fracture 8 years after the index procedure. A periaortic hypodense lesion identified on preoperative computed tomography (CT) was initially interpreted as a hematoma but rapidly progressed into a large soft-tissue mass shortly after the secondary intervention, accompanied by a marked elevation in serum lactate dehydrogenase. Imaging evaluation revealed a discordant pattern: restricted diffusion on magnetic resonance imaging (MRI) with absent enhancement on contrast-enhanced ultrasound (CEUS). Positron emission tomography\/computed tomography (PET\/CT) demonstrated markedly increased metabolic activity within the lesion. Core needle biopsy confirmed the diagnosis of Epstein-Barr virus (EBV)-positive diffuse large B-cell lymphoma (DLBCL) with a TP53 mutation. Diffuse large B-cell lymphoma associated with chronic inflammation (DLBCL-CI) occurring around a vascular graft and forming a well-defined mass is extremely rare. No previously reported case has simultaneously met the three criteria of a vascular graft background, Epstein-Barr virus-encoded small RNA (EBER) positivity, and the formation of a well-defined mass. Through retrospective analysis of the imaging features in this case, we aim to enhance clinicians\u2019 awareness of this rare entity, thereby facilitating earlier diagnosis and reducing misdiagnosis.<\/jats:p>","DOI":"10.3389\/fmed.2026.1893734","type":"journal-article","created":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T04:23:54Z","timestamp":1783657434000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Case report: Diffuse large B-cell lymphoma associated with chronic inflammation presenting as a rapidly enlarging perigraft hematoma after TEVAR"],"prefix":"10.3389","volume":"13","author":[{"given":"Chunxiang","family":"Yang","sequence":"first","affiliation":[{"name":"Department of Radiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang Central People\u2019s Hospital","place":["Yichang, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ji","family":"Lu","sequence":"additional","affiliation":[{"name":"Department of Radiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang Central People\u2019s Hospital","place":["Yichang, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yufei","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Pathology, The First College of Clinical Medical Science, China Three Gorges University, Yichang Central People\u2019s Hospital","place":["Yichang, China"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuang","family":"Li","sequence":"additional","affiliation":[{"name":"Department of Pathology, The First College of Clinical Medical Science, China Three Gorges University, Yichang Central People\u2019s Hospital","place":["Yichang, 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