{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T19:40:04Z","timestamp":1751485204539,"version":"3.41.0"},"reference-count":11,"publisher":"International College of Surgeons","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2014]]},"abstract":"<jats:title>Abstract<\/jats:title>\n        <jats:p>We herein describe a 60-year-old Japanese man with a giant retroperitoneal liposarcoma undergoing leiomyosarcomatous differentiation. He was admitted to our hospital because of a 5-month history of dysphagia and abdominal distention. Abdominal computed tomography showed a giant tumor that occupied the entire retroperitoneal space. The majority of the mass was lipomatous and low density; both a heterogenous and solid mass were also present. A giant retroperitoneal liposarcoma was diagnosed, and tumor resection was performed. At surgery, the tumor was mostly isolated from the retroperitoneum and other organs. Histopathologically, the tumor comprised well-differentiated and dedifferentiated liposarcoma with heterologous differentiation of the leiomyosarcomatous components, which is a rare phenomenon in liposarcoma. The patient was alive 3 years after the first treatment, although he has had 3 local recurrences (approximately one recurrence yearly) and has been treated by repeated resection and radiotherapy.<\/jats:p>","DOI":"10.9738\/intsurg-d-13-00061.1","type":"journal-article","created":{"date-parts":[[2014,1,20]],"date-time":"2014-01-20T22:47:19Z","timestamp":1390258039000},"page":"48-51","source":"Crossref","is-referenced-by-count":1,"title":["Retroperitoneal Liposarcoma With Leiomyosarcomatous Differentiation"],"prefix":"10.9738","volume":"99","author":[{"given":"Masaki","family":"Suzuki","sequence":"first","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Minoru","family":"Fukuchi","sequence":"additional","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinji","family":"Sakurai","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Pathology, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroshi","family":"Naitoh","sequence":"additional","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinsuke","family":"Kiriyama","sequence":"additional","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takaharu","family":"Fukasawa","sequence":"additional","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuichi","family":"Tabe","sequence":"additional","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hayato","family":"Yamauchi","sequence":"additional","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomonori","family":"Yoshida","sequence":"additional","affiliation":[{"name":"Department of Surgery, Social Insurance Gunma Chuo General Hospital, Gunma, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroyuki","family":"Kuwano","sequence":"additional","affiliation":[{"name":"Department of General Surgical Science, Gunma University Graduate School of Medicine, Mebashi, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"4721","reference":[{"issue":"10","key":"i0020-8868-99-1-48-b01","series-title":"Am J Surg Pathol","first-page":"1557","article-title":"Dedifferentiated liposarcomas with divergent myosarcomatous differentiation developed in the internal trunk","volume":"31","author":"Nguyen\n              B,","year":"2007","unstructured":"Nguyen\n              B, \n            \n              Louis\n              G, \n            \n              Isabelle\n              H, \n            \n              Marie\n              CC, \n            \n              Francoise\n              Collin, \n            \n              Alain\n              A\n            \n            et al\n          . Dedifferentiated liposarcomas with divergent myosarcomatous differentiation developed in the internal trunk. Am J Surg Pathol2007;31(10):1557\u20131565"},{"issue":"8","key":"i0020-8868-99-1-48-b02","series-title":"Am J Surg Pathol","first-page":"714","article-title":"Smooth muscle in atypical lipomatous tumors: a report of three cases","volume":"14","author":"Evans\n              HL.","year":"1990","unstructured":"Evans\n              HL. \n          \n          Smooth muscle in atypical lipomatous tumors: a report of three cases. Am J Surg Pathol1990;14(8):714\u2013718"},{"issue":"6","key":"i0020-8868-99-1-48-b03","series-title":"Am J Surg Pathol","first-page":"546","article-title":"Divergent myosarcoma differentiation in retroperitoneal liposarcoma","volume":"17","author":"Tallini\n              G,","year":"1993","unstructured":"Tallini\n              G, \n            \n              Erlandson\n              RA, \n            \n              Brennan\n              MF, \n            \n              Woodruff\n              JM. \n          \n          Divergent myosarcoma differentiation in retroperitoneal liposarcoma. 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Appl Immunohistochem Mol Morphol2000;8(3):216\u2013221"},{"issue":"6","key":"i0020-8868-99-1-48-b07","series-title":"Am J Surg Pathol","first-page":"742","article-title":"Lipoleiomyosarcoma (well-differentiated liposarcoma with leiomyosarcomatous differentiation): a clinicopathologic study of nine cases including one with dedifferentiation","volume":"26","author":"Folpe\n              AL,","year":"2002","unstructured":"Folpe\n              AL, \n            \n              Weiss\n              SW. \n          \n          Lipoleiomyosarcoma (well-differentiated liposarcoma with leiomyosarcomatous differentiation): a clinicopathologic study of nine cases including one with dedifferentiation. 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Am J Surg Pathol1987;11(3):161\u2013183"},{"issue":"3","key":"i0020-8868-99-1-48-b09","series-title":"Arch Surg","first-page":"328","article-title":"Prognostic factors in primary retroperitoneal soft-tissue sarcomas","volume":"126","author":"Bevilacqua\n              RG,","year":"1991","unstructured":"Bevilacqua\n              RG, \n            \n              Rogatko\n              A, \n            \n              Hajdu\n              SI, \n            \n              Brennan\n              MF. \n          \n          Prognostic factors in primary retroperitoneal soft-tissue sarcomas. Arch Surg1991;126(3):328\u2013334"},{"issue":"2","key":"i0020-8868-99-1-48-b10","series-title":"Ann Surg","first-page":"278","article-title":"Mesenchymoma, the mixed tumor of mesenchymal derivatives","volume":"127","author":"Stout\n              AP.","year":"1948","unstructured":"Stout\n              AP. \n          \n          Mesenchymoma, the mixed tumor of mesenchymal derivatives. Ann Surg1948;127(2):278\u2013290"},{"issue":"1","key":"i0020-8868-99-1-48-b11","series-title":"Cancer","first-page":"53","article-title":"Treatment of primary and recurrent retroperitoneal liposarcoma: twenty-five year experience at Memorial Hospital","volume":"31","author":"Kinne\n              DW,","year":"1973","unstructured":"Kinne\n              DW, \n            \n              Chu\n              FC, \n            \n              Huvos\n              AG, \n            \n              Yagoda\n              A, \n            \n              Fortner\n              JG. \n          \n          Treatment of primary and recurrent retroperitoneal liposarcoma: twenty-five year experience at Memorial Hospital. Cancer1973;31(1):53\u201364"}],"container-title":["International Surgery"],"original-title":[],"link":[{"URL":"https:\/\/international-surgery.kglmeridian.com\/view\/journals\/insu\/99\/1\/article-p48.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/meridian.allenpress.com\/international-surgery\/article-pdf\/99\/1\/48\/2213636\/intsurg-d-13-00061_1.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/international-surgery.kglmeridian.com\/downloadpdf\/journals\/insu\/99\/1\/article-p48.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/international-surgery.kglmeridian.com\/downloadpdf\/journals\/insu\/99\/1\/article-p48.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,7,2]],"date-time":"2025-07-02T19:08:26Z","timestamp":1751483306000},"score":1,"resource":{"primary":{"URL":"https:\/\/international-surgery.kglmeridian.com\/view\/journals\/insu\/99\/1\/article-p48.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014]]},"references-count":11,"journal-issue":{"issue":"1"},"URL":"https:\/\/doi.org\/10.9738\/intsurg-d-13-00061.1","relation":{},"ISSN":["0020-8868","2520-2456"],"issn-type":[{"type":"print","value":"0020-8868"},{"type":"electronic","value":"2520-2456"}],"subject":[],"published":{"date-parts":[[2014]]}}}