{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T22:36:35Z","timestamp":1791585395842,"version":"4.3.4"},"reference-count":13,"publisher":"BMJ","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Reports"],"accepted":{"date-parts":[[2018,8,12]]},"abstract":"<jats:p>A 23-year-old man presented with difficulty walking and leg pain and numbness. MRI revealed a cystic mass at Th11\u201312 and a pineal-region tumour. The patient underwent surgery to resect the thoracic-level mass. The tumour adhered strongly to the neural tissue and could only be partially resected. On pathological examination, the resected tumour was diagnosed as a mature teratoma. The tumour regrew and disseminated within 3\u2009months after resection. Both the spinal cord tumour and the tumour in the pineal region shrank significantly after chemotherapy and radiotherapy. Although the tumour was pathologically diagnosed as a mature teratoma, we suspect that the residual tumour contained an immature or malignant component. Thus, careful follow-up observation is mandatory after partial resection of a mature teratoma. In addition, because teratomas can disseminate in the central nervous system, the presence of teratoma should prompt an examination of both the spinal cord and brain.<\/jats:p>","DOI":"10.1136\/bcr-2017-223742","type":"journal-article","created":{"date-parts":[[2018,9,1]],"date-time":"2018-09-01T08:35:14Z","timestamp":1535790914000},"page":"bcr-2017-223742","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":7,"title":["Acute regrowth and dissemination of a mature spinal cord teratoma after partial resection"],"prefix":"10.1136","volume":"2018","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3254-0020","authenticated-orcid":false,"given":"Momotaro","family":"Kawai","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Narihito","family":"Nagoshi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akio","family":"Iwanami","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"},{"name":"Koga Hospital Spine Center, Ibaraki, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuji","family":"Mikami","sequence":"additional","affiliation":[{"name":"Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Osahiko","family":"Tsuji","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nobuyuki","family":"Fujita","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mitsuru","family":"Yagi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4830-4690","authenticated-orcid":false,"given":"Kota","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ken","family":"Ishii","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"},{"name":"Spine and Spinal Cord Center, International University of Health and Welfare, Mita Hospital, Tokyo, Japan"},{"name":"Department of Orthopaedic Surgery, School of Medicine, International University of Health and Welfare, Chiba, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masaya","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Morio","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2018,9,1]]},"reference":[{"key":"2025082723594129000_2018.sep01_1.bcr-2017-223742.1","doi-asserted-by":"crossref","unstructured":"Slooff JL , Kernohan JW , McCarthy CS . 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