{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T04:30:06Z","timestamp":1769747406796,"version":"3.49.0"},"reference-count":23,"publisher":"Springer Science and Business Media LLC","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,1,29]]},"DOI":"10.7759\/cureus.102558","type":"journal-article","created":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T14:49:30Z","timestamp":1769698170000},"source":"Crossref","is-referenced-by-count":0,"title":["A Rare Case of Cutaneous Leiomyosarcoma Arising From the External Auditory Canal"],"prefix":"10.7759","author":[{"given":"Jun","family":"Yamashita","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinsuke","family":"Ide","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kei","family":"Kajihara","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Takeshi","family":"Nakamura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kuniyuki","family":"Takahashi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","reference":[{"key":"ref1","article-title":"Leiomyosarcoma","author":"Menon G","year":"2025","unstructured":"Menon G, Mangla A, Yadav U. Leiomyosarcoma. StatPearls [Internet]. StatPearls Publishing, Treasure Island (FL); 2025."},{"key":"ref2","doi-asserted-by":"publisher","DOI":"10.1684\/ejd.2015.2681","article-title":"Primary cutaneous and subcutaneous leiomyosarcomas: evolution and prognostic factors","volume":"26","author":"Aneiros-Fernandez J","year":"2016","unstructured":"Aneiros-Fernandez J, Antonio Retamero J, Husein-Elahmed H, Ovalle F, Aneiros-Cachaza J. Primary cutaneous and subcutaneous leiomyosarcomas: evolution and prognostic factors. Eur J Dermatol. 2016, 26:9-12. 10.1684\/ejd.2015.2681","journal-title":"Eur J Dermatol"},{"key":"ref3","doi-asserted-by":"publisher","DOI":"10.1111\/ddg.14989","article-title":"S1-guideline cutaneous and subcutaneous leiomyosarcoma","volume":"21","author":"Helbig D","year":"2023","unstructured":"Helbig D, Dippel E, Erdmann M, et al.. S1-guideline cutaneous and subcutaneous leiomyosarcoma. J Dtsch Dermatol Ges. 2023, 21:555-63. 10.1111\/ddg.14989","journal-title":"J Dtsch Dermatol Ges"},{"key":"ref4","doi-asserted-by":"publisher","DOI":"10.1111\/ajd.13307","article-title":"Cutaneous leiomyosarcoma: dermal and subcutaneous","volume":"61","author":"Wong GN","year":"2020","unstructured":"Wong GN, Webb A, Gyorki D, et al.. Cutaneous leiomyosarcoma: dermal and subcutaneous. Australas J Dermatol. 2020, 61:243-9. 10.1111\/ajd.13307","journal-title":"Australas J Dermatol"},{"key":"ref5","doi-asserted-by":"publisher","DOI":"10.1002\/pbc.23252","article-title":"Soft tissue sarcoma across the age spectrum: a population-based study from the Surveillance Epidemiology and End Results database","volume":"57","author":"Ferrari A","year":"2011","unstructured":"Ferrari A, Sultan I, Huang TT, et al.. Soft tissue sarcoma across the age spectrum: a population-based study from the Surveillance Epidemiology and End Results database. Pediatr Blood Cancer. 2011, 57:943-9. 10.1002\/pbc.23252","journal-title":"Pediatr Blood Cancer"},{"key":"ref6","doi-asserted-by":"publisher","DOI":"10.1017\/s0022215100140204","article-title":"Leiomyosarcoma of the auricle: case report and literature review","volume":"112","author":"Karasen RM","year":"1998","unstructured":"Karasen RM, Sutbeyaz Y, Gundogdu C, Aktan B. Leiomyosarcoma of the auricle: case report and literature review. J Laryngol Otol. 1998, 112:166-8. 10.1017\/s0022215100140204","journal-title":"J Laryngol Otol"},{"key":"ref7","doi-asserted-by":"publisher","DOI":"10.5152\/iao.2019.4743","article-title":"Leiomyoma of the external auditory canal","volume":"15","author":"Tombolini M","year":"2019","unstructured":"Tombolini M, Ralli M, Carletti R, Greco A, Vincentiis M. Leiomyoma of the external auditory canal. J Int Adv Otol. 2019, 15:169-72. 10.5152\/iao.2019.4743","journal-title":"J Int Adv Otol"},{"key":"ref8","doi-asserted-by":"publisher","DOI":"10.1007\/s00405-004-0838-5","article-title":"Leiomyoma of the external auditory canal--a case report and brief review of the literature","volume":"262","author":"Yeh SY","year":"2005","unstructured":"Yeh SY, Chao TK. Leiomyoma of the external auditory canal--a case report and brief review of the literature. Eur Arch Otorhinolaryngol. 2005, 262:397-9. 10.1007\/s00405-004-0838-5","journal-title":"Eur Arch Otorhinolaryngol"},{"key":"ref9","doi-asserted-by":"publisher","DOI":"10.5858\/2006-130-1448-GOSTSR","article-title":"Grading of soft tissue sarcomas: review and update","volume":"130","author":"Coindre JM","year":"2006","unstructured":"Coindre JM. Grading of soft tissue sarcomas: review and update. Arch Pathol Lab Med. 2006, 130:1448-53. 10.5858\/2006-130-1448-GOSTSR","journal-title":"Arch Pathol Lab Med"},{"key":"ref10","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejca.2012.09.011","article-title":"Descriptive epidemiology of sarcomas in Europe: report from the RARECARE project","volume":"49","author":"Stiller CA","year":"2013","unstructured":"Stiller CA, Trama A, Serraino D, et al.. Descriptive epidemiology of sarcomas in Europe: report from the RARECARE project. Eur J Cancer. 2013, 49:684-95. 10.1016\/j.ejca.2012.09.011","journal-title":"Eur J Cancer"},{"key":"ref11","doi-asserted-by":"publisher","DOI":"10.20892\/j.issn.2095-3941.2019.0041","article-title":"Incidence, distribution of histological subtypes and primary sites of soft tissue sarcoma in China","volume":"16","author":"Yang Z","year":"2019","unstructured":"Yang Z, Zheng R, Zhang S, Zeng H, Li H, Chen W. Incidence, distribution of histological subtypes and primary sites of soft tissue sarcoma in China. Cancer Biol Med. 2019, 16:565-74. 10.20892\/j.issn.2095-3941.2019.0041","journal-title":"Cancer Biol Med"},{"key":"ref12","doi-asserted-by":"publisher","DOI":"10.1007\/s11604-022-01305-x","article-title":"Gastrointestinal stromal tumors: a comprehensive radiological review","volume":"40","author":"Inoue A","year":"2022","unstructured":"Inoue A, Ota S, Yamasaki M, Batsaikhan B, Furukawa A, Watanabe Y. Gastrointestinal stromal tumors: a comprehensive radiological review. Jpn J Radiol. 2022, 40:1105-20. 10.1007\/s11604-022-01305-x","journal-title":"Jpn J Radiol"},{"key":"ref13","doi-asserted-by":"publisher","DOI":"10.1016\/j.abd.2020.10.003","article-title":"Cutaneous leiomyosarcoma: a 20-year retrospective study and review of the literature","volume":"96","author":"Soares Queir\u00f3s C","year":"2021","unstructured":"Soares Queir\u00f3s C, Filipe P, Soares de Almeida L. Cutaneous leiomyosarcoma: a 20-year retrospective study and review of the literature. An Bras Dermatol. 2021, 96:278-83. 10.1016\/j.abd.2020.10.003","journal-title":"An Bras Dermatol"},{"key":"ref14","article-title":"Clinical features of benign tumors of the external auditory canal according to pathology","volume":"4","author":"Kim JR","year":"2017","unstructured":"Kim JR, Im H, Chae H, Song J. Clinical features of benign tumors of the external auditory canal according to pathology. Ann Otolaryngol Rhinol. 2017, 4:1169.","journal-title":"Ann Otolaryngol Rhinol"},{"key":"ref15","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-4362.1996.tb03634.x","article-title":"Ultrastructure and human papillomavirus DNA in papillomatosis of external auditory canal","volume":"35","author":"Xia MY","year":"1996","unstructured":"Xia MY, Zhu WY, Lu JY, Lu Q, Chen L. Ultrastructure and human papillomavirus DNA in papillomatosis of external auditory canal. Int J Dermatol. 1996, 35:337-9. 10.1111\/j.1365-4362.1996.tb03634.x","journal-title":"Int J Dermatol"},{"key":"ref16","doi-asserted-by":"publisher","DOI":"10.1055\/s-2007-994290","article-title":"Squamous cell carcinoma of the external auditory canal","volume":"18","author":"Lobo D","year":"2008","unstructured":"Lobo D, Llorente JL, Su\u00e1rez C. Squamous cell carcinoma of the external auditory canal. Skull Base. 2008, 18:167-72. 10.1055\/s-2007-994290","journal-title":"Skull Base"},{"key":"ref17","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-319-40618-3_45","article-title":"Soft tissue sarcoma - unusual histologies and sites","author":"Board ACSSE","year":"2010","unstructured":"Board ACSSE. Soft tissue sarcoma - unusual histologies and sites. AJCC Cancer Staging Manual. Amin MB, Edge SB, Greene FL, et al. (ed): Springer International Publishing, New York; 2010. 517-25. 10.1007\/978-3-319-40618-3_45"},{"key":"ref18","doi-asserted-by":"publisher","DOI":"10.1007\/s12070-011-0305-8","article-title":"Head and neck leiomyosarcoma","volume":"65","author":"Yadav J","year":"2013","unstructured":"Yadav J, Bakshi J, Chouhan M, Modi R. Head and neck leiomyosarcoma. Indian J Otolaryngol Head Neck Surg. 2013, 65:1-5. 10.1007\/s12070-011-0305-8","journal-title":"Indian J Otolaryngol Head Neck Surg"},{"key":"ref19","doi-asserted-by":"publisher","DOI":"10.1245\/ASO.2004.03.006","article-title":"Head and neck soft tissue sarcomas: a multivariate analysis of outcomes","volume":"11","author":"Bentz BG","year":"2004","unstructured":"Bentz BG, Singh B, Woodruff J, Brennan M, Shah JP, Kraus D. Head and neck soft tissue sarcomas: a multivariate analysis of outcomes. Ann Surg Oncol. 2004, 11:619-28. 10.1245\/ASO.2004.03.006","journal-title":"Ann Surg Oncol"},{"key":"ref20","doi-asserted-by":"publisher","DOI":"10.1093\/annonc\/mdt126","article-title":"Head and neck soft tissue sarcomas: prognostic factors and outcome in a series of patients treated at a single institution","volume":"24","author":"Mattavelli D","year":"2013","unstructured":"Mattavelli D, Miceli R, Radaelli S, et al.. Head and neck soft tissue sarcomas: prognostic factors and outcome in a series of patients treated at a single institution. Ann Oncol. 2013, 24:2181-9. 10.1093\/annonc\/mdt126","journal-title":"Ann Oncol"},{"key":"ref21","doi-asserted-by":"publisher","DOI":"10.1016\/j.jcms.2024.01.005","article-title":"Management of head & neck sarcomas in adults: a retrospective study","volume":"52","author":"Bini A","year":"2024","unstructured":"Bini A, Derka S, Stavrianos S. Management of head & neck sarcomas in adults: a retrospective study. J Craniomaxillofac Surg. 2024, 52:877-83. 10.1016\/j.jcms.2024.01.005","journal-title":"J Craniomaxillofac Surg"},{"key":"ref22","doi-asserted-by":"publisher","DOI":"10.3389\/fsurg.2015.00019","article-title":"Outcomes of the treatment of head and neck sarcomas in a tertiary referral center","volume":"2","author":"Lindford A","year":"2015","unstructured":"Lindford A, McIntyre B, Marsh R, MacKinnon CA, Davis C, Tan ST. Outcomes of the treatment of head and neck sarcomas in a tertiary referral center. Front Surg. 2015, 2:19. 10.3389\/fsurg.2015.00019","journal-title":"Front Surg"},{"key":"ref23","doi-asserted-by":"publisher","DOI":"10.1001\/archoto.2011.147","article-title":"Leiomyosarcoma of the head and neck: a population-based analysis","volume":"137","author":"Eppsteiner RW","year":"2011","unstructured":"Eppsteiner RW, DeYoung BR, Milhem MM, Pagedar NA. Leiomyosarcoma of the head and neck: a population-based analysis. Arch Otolaryngol Head Neck Surg. 2011, 137:921-4. 10.1001\/archoto.2011.147","journal-title":"Arch Otolaryngol Head Neck Surg"}],"container-title":["Cureus"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cureus.com\/articles\/442249-a-rare-case-of-cutaneous-leiomyosarcoma-arising-from-the-external-auditory-canal","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,29]],"date-time":"2026-01-29T14:49:31Z","timestamp":1769698171000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cureus.com\/articles\/442249-a-rare-case-of-cutaneous-leiomyosarcoma-arising-from-the-external-auditory-canal"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1,29]]},"references-count":23,"URL":"https:\/\/doi.org\/10.7759\/cureus.102558","relation":{},"ISSN":["2168-8184"],"issn-type":[{"value":"2168-8184","type":"print"}],"subject":[],"published":{"date-parts":[[2026,1,29]]}}}