{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,10,16]],"date-time":"2023-10-16T09:16:11Z","timestamp":1697447771878},"reference-count":19,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2011,8,26]],"date-time":"2011-08-26T00:00:00Z","timestamp":1314316800000},"content-version":"vor","delay-in-days":25,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Histopathology"],"published-print":{"date-parts":[[2011,8]]},"abstract":"<jats:p>Phan D C, Gleason B C, Fan X, Chan O T M, Himmelfarb E &amp; Bannykh S I\u2028(2011) <jats:italic>Histopathology<\/jats:italic><jats:bold>59<\/jats:bold>, 327\u2013332<\/jats:p><jats:p><jats:bold>Injection site pseudosarcoma in piriformis syndrome<\/jats:bold><\/jats:p><jats:p><jats:bold>Aims:\u2002<\/jats:bold> Pseudosarcomatous reactive myofibroblastic proliferations have been described following surgery or trauma at a variety of anatomical sites. These types of reactions have not been previously described at injection sites. Here we evaluated prevalence, morphologic patterns and clinical resolution of such lesions.<\/jats:p><jats:p><jats:bold>Methods and results:\u2002<\/jats:bold> We analyzed 266 surgical resection specimens obtained during the definitive treatment of piriformis syndrome. Three cases showed exuberant reactive fibroblastic\/myofibroblastic intramuscular proliferations, mimicking a sarcoma. In all three cases the surgeries were found to be preceded by local injections of cortisone and bupivacaine. Clinical follow\u2010up revealed no uncontrolled growth.<\/jats:p><jats:p><jats:bold>Conclusions:\u2002<\/jats:bold> As the clinical history of injections is often not provided, it is important to be aware of this pitfall when reviewing skeletal muscle resections for entrapment syndromes.<\/jats:p>","DOI":"10.1111\/j.1365-2559.2011.03933.x","type":"journal-article","created":{"date-parts":[[2015,10,13]],"date-time":"2015-10-13T04:29:31Z","timestamp":1444710571000},"page":"327-332","update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Injection site pseudosarcoma in piriformis syndrome"],"prefix":"10.1111","volume":"59","author":[{"given":"Dan C","family":"Phan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Briana C","family":"Gleason","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuemo","family":"Fan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Owen T M","family":"Chan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Himmelfarb","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Serguei I","family":"Bannykh","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2011,8,26]]},"reference":[{"key":"e_1_2_7_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.cfp.2005.02.010"},{"key":"e_1_2_7_3_2","doi-asserted-by":"crossref","first-page":"821","DOI":"10.3928\/0147-7447-20020801-12","article-title":"Piriformis syndrome","volume":"25","author":"Foster MR","year":"2002","journal-title":"Orthopedics"},{"key":"e_1_2_7_4_2","doi-asserted-by":"crossref","first-page":"351","DOI":"10.5858\/134.3.351","article-title":"Pseudoneoplastic lesions: general considerations","volume":"134","author":"Wick MR","year":"2010","journal-title":"Arch. 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