{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T18:14:14Z","timestamp":1788286454586,"version":"build-2803163510"},"reference-count":9,"publisher":"BMJ","issue":"4","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,3,24]]},"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:p>\n                    Gastric synovial sarcoma (GSS) is an exceptionally rare mesenchymal malignancy, with only 51 cases reported. We present a case of a man in his 50s with dyspeptic symptoms and epigastric pain. Gastroscopy revealed an ulcerous tumour below the gastro-oesophageal junction. Histology, immunohistochemistry and molecular analysis confirmed\n                    <jats:italic>SS18::SSX1<\/jats:italic>\n                    fusion, diagnostic of synovial sarcoma. The patient underwent successful robot-assisted partial gastric resection with negative margins. No recurrence was noted at 6-month follow-up. This case underscores the diagnostic challenge of GSS, the critical role of molecular techniques and the efficacy of minimally invasive surgical management.\n                  <\/jats:p>","DOI":"10.1136\/bcr-2025-267170","type":"journal-article","created":{"date-parts":[[2026,4,7]],"date-time":"2026-04-07T15:45:15Z","timestamp":1775576715000},"page":"e267170","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Gastric synovial sarcoma: the critical role of molecular techniques in diagnosis of an ultra-rare cancer"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-2547-7603","authenticated-orcid":false,"given":"Thabeya","family":"Elango","sequence":"first","affiliation":[{"name":"Department of Transplantation and Surgery, Rigshospitalet, Copenhagen, Capital Region of Denmark, Denmark"},{"name":"Department of Clinical Medicine, Aalborg University, Aalborg, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Johan","family":"Tolstrup","sequence":"additional","affiliation":[{"name":"Department of Transplantation and Surgery, Rigshospitalet, Copenhagen, Capital Region of Denmark, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luit","family":"Penninga","sequence":"additional","affiliation":[{"name":"Department of Transplantation and Surgery, Rigshospitalet, Copenhagen, Capital Region of Denmark, Denmark"},{"name":"Department of Clinical Medicine, Aalborg University, Aalborg, Denmark"},{"name":"Department of Gastrointestinal Surgery, Aalborg University Hospital, Aalborg, Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,4,7]]},"reference":[{"key":"2026062608153439000_19.4.e267170.1","first-page":"363","article-title":"Gastric ulcer that turned out to be metastasis of a synovial sarcoma: A case report and literature 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