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In some instances, however, the diagnosis of these tumors can be challenging and special techniques are needed. The present study reports 2 unusual cases of primary intratesticular tumors showing a striking morphology, characterized by spindle to stellate cells in a lymphoid background. The diagnosis of interdigitating dendritic cell tumor and inflammatory myofibroblastic tumor was established in the 2 cases, and their probable origin in cells of the accessory immune system is discussed. Although both tumors share similar histological features, their immunohistochemical profiles were decisive for a definitive diagnosis.<\/jats:p>","DOI":"10.1177\/1066896908323505","type":"journal-article","created":{"date-parts":[[2008,9,19]],"date-time":"2008-09-19T20:26:06Z","timestamp":1221855966000},"page":"104-109","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":12,"title":["Primary Intratesticular Spindle Cell Tumors: Interdigitating Dendritic Cell Tumor and Inflammatory Myofibroblastic Tumor"],"prefix":"10.1177","volume":"19","author":[{"given":"Manuel","family":"Nistal","sequence":"first","affiliation":[{"name":"Department of Pathology, Hospital La Paz, Madrid, Spain  (MN, PGP), Department of Anatomy, Histology and Neuroscience, School of Medicine, Universidad Auton\u00f3ma de Madrid, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pilar","family":"Gonzalez-Peramato","sequence":"additional","affiliation":[{"name":"Department of Pathology, Hospital La Paz, Madrid, Spain  (MN, PGP)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alvaro","family":"Serrano","sequence":"additional","affiliation":[{"name":"Department of Urology, Hospital Universitario de Guadalajara, Guadalajara, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miguel","family":"Reyes-Mugica","sequence":"additional","affiliation":[{"name":"Program of Pediatric and Developmental Pathology, Yale University School of Medicine, New Haven, Connecticut"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariana M.","family":"Cajaiba","sequence":"additional","affiliation":[{"name":"Department of Pathology, Baystate Medical Center, Springfield, Massachusetts,"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2008,9,19]]},"reference":[{"key":"atypb1","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199703000-00005"},{"key":"atypb2","doi-asserted-by":"publisher","DOI":"10.1136\/jcp.2005.036475"},{"key":"atypb3","doi-asserted-by":"publisher","DOI":"10.1093\/ajcp\/85.6.739"},{"key":"atypb4","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19880415)61:8<1594::AID-CNCR2820610817>3.0.CO;2-G"},{"key":"atypb5","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199005000-00001"},{"key":"atypb6","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199809000-00002"},{"key":"atypb7","doi-asserted-by":"publisher","DOI":"10.1309\/M95G-7DQ2-TLQL-7Q11"},{"key":"atypb8","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-2559.2002.01418.x"},{"key":"atypb9","doi-asserted-by":"publisher","DOI":"10.1111\/j.0309-0167.2004.01816.x"},{"key":"atypb10","doi-asserted-by":"publisher","DOI":"10.1093\/ajcp\/100.3.285"},{"key":"atypb11","doi-asserted-by":"publisher","DOI":"10.1136\/jcp.57.1.87"},{"key":"atypb12","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199909000-00020"},{"key":"atypb13","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199112000-00005"},{"key":"atypb14","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199508000-00001"},{"key":"atypb15","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19940301)73:5<1433::AID-CNCR2820730518>3.0.CO;2-F"},{"key":"atypb16","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19951101)76:9<1545::AID-CNCR2820760908>3.0.CO;2-H"},{"key":"atypb17","first-page":"364","volume":"11","author":"Su LD","year":"1998","journal-title":"Mod Pathol"},{"key":"atypb18","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-200412000-00009"},{"key":"atypb19","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2559.2006.02376.x"},{"key":"atypb20","doi-asserted-by":"publisher","DOI":"10.1038\/modpathol.3800776"},{"key":"atypb21","doi-asserted-by":"publisher","DOI":"10.1093\/ajcp\/94.5.538"},{"key":"atypb22","doi-asserted-by":"publisher","DOI":"10.1097\/01.pas.0000213280.35413.1b"},{"key":"atypb23","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-199303000-00003"},{"key":"atypb24","doi-asserted-by":"publisher","DOI":"10.5858\/2001-125-0379-SIMTIP"},{"key":"atypb25","doi-asserted-by":"publisher","DOI":"10.1097\/00000478-200305000-00009"},{"key":"atypb26","doi-asserted-by":"publisher","DOI":"10.1002\/1097-0142(19951201)76:11<2217::AID-CNCR2820761107>3.0.CO;2-N"},{"key":"atypb27","volume-title":"Inflammatory pseudotumors of the major salivary glands. 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