{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,30]],"date-time":"2025-10-30T17:31:44Z","timestamp":1761845504272,"version":"3.40.5"},"reference-count":8,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2022,3,28]],"date-time":"2022-03-28T00:00:00Z","timestamp":1648425600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Thoracic Cancer"],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Spontaneous regression (SR) of thymoma is rare. A 44\u2010year\u2010old man with right chest pain underwent computed tomography (CT), which showed an 11.0\u00a0cm mass in the anterior mediastinum and right pleural effusion. He refused surgery and was sent home without medication and additional treatment. One year later, the mass had regressed to 5.5\u00a0cm, and the right pleural effusion had disappeared. He was then lost to follow\u2010up. Four years after the initial visit, he presented with diplopia and fatigue. A significant increase in his anti\u2010acetylcholine receptor antibody levels led to myasthenia gravis (MG) diagnosis. CT revealed a regressed mediastinal mass (3.0\u00a0cm). After extended thymectomy, histologic analysis confirmed a thymoma type B2, Masaoka stage IIa. The SR was due to intratumoral infarction. This report is the first to describe MG developing during SR. Anterior mediastinal tumors undergoing SR should be differentiated from thymomas and MG perioperative development should be considered.<\/jats:p>","DOI":"10.1111\/1759-7714.14407","type":"journal-article","created":{"date-parts":[[2022,3,29]],"date-time":"2022-03-29T01:55:35Z","timestamp":1648518935000},"page":"1533-1536","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Thymoma exhibiting spontaneous regression with developing myasthenia gravis: A case report"],"prefix":"10.1111","volume":"13","author":[{"given":"Kazuhisa","family":"Nishina","sequence":"first","affiliation":[{"name":"Department of Thoracic Surgery Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital  Tokyo 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