{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,9]],"date-time":"2026-04-09T13:38:36Z","timestamp":1775741916454,"version":"3.50.1"},"reference-count":29,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2022,12,28]],"date-time":"2022-12-28T00:00:00Z","timestamp":1672185600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostics"],"abstract":"<jats:p>Diagnosing shoulder tumors is a challenge because the joint is very complex, and a static examination can misdiagnose some tumors. However, we found that a pseudoaneurysm provides a differential diagnosis of a tumor, and to that end, we present a case that mimics shoulder infection. The patient was an 80-year-old female who had a history of coronary artery disease and end-stage renal disease under regular hemodialysis and complained of right shoulder swelling and progression. A magnetic resonance imaging (MRI) scan revealed an abscess, inflammatory pseudotumor (IPT), and osteomyelitis of the humerus. Computed tomography (CT)-guided pigtail drainage was performed twice without significant improvement. An angiogram revealed a right shoulder pseudoaneurysm fed by the acromial branch of the thoracoacromial artery. After endovascular coiling, the patient was discharged and outpatient follow-up was arranged. If aspiration of the abscess leads to only mild improvement in shoulder swelling, further evaluation should be arranged. An angiogram examination is a good method for diagnosing and designing operations, and endovascular treatment is good for preventing injury to the muscle, tendon, nerve, or blood vessels.<\/jats:p>","DOI":"10.3390\/diagnostics13010082","type":"journal-article","created":{"date-parts":[[2022,12,28]],"date-time":"2022-12-28T08:42:22Z","timestamp":1672216942000},"page":"82","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Differential Diagnosis of Thoracoacromial Artery Pseudoaneurysm from Shoulder Inflammatory Pseudotumor: A Case Report"],"prefix":"10.3390","volume":"13","author":[{"given":"Tzu-Yen","family":"Huang","sequence":"first","affiliation":[{"name":"Department of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital at Keelung, Keelung 20401, Taiwan"},{"name":"Department of Biomedical Engineering, National Taiwan University, Taipei 10617, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pin-Chao","family":"Feng","sequence":"additional","affiliation":[{"name":"Department of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital at Linkou, Taoyuan City 33302, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yao-Chang","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Thoracic and Cardiovascular Surgery, Chang Gung Memorial Hospital at Keelung, Keelung 20401, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chun-Yi","family":"Su","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Keelung Branch, Bone and Joint Research Center, Keelung 20401, Taiwan"},{"name":"Department of Orthopaedic Surgery, Chang Gung University, Taoyuan City 33302, Taiwan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"195","DOI":"10.2106\/00004623-197658020-00006","article-title":"Normal and abnormal motion of the shoulder","volume":"58","author":"Poppen","year":"1976","journal-title":"J. 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