{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T10:51:49Z","timestamp":1760266309363},"reference-count":35,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2002,11,25]],"date-time":"2002-11-25T00:00:00Z","timestamp":1038182400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Diagnostic Cytopathology"],"published-print":{"date-parts":[[2002,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Thoracic and retroperitoneal spindle\u2010cell lesions represent a diagnostic challenge in the evaluation of fine\u2010needle aspiration (FNA) specimens. The challenge is due to the morphologic similarities and wide variety of different entities with spindle\u2010cell morphology in these two sites. The purpose of this study was to identify criteria helpful in the classification and differential diagnosis of spindle\u2010cell lesions in these two locations. A set of cytologic features was analyzed in 57 thoracic or retroperitoneal spindle\u2010cell lesions. Our results show that pleomorphism and abundant single cells were parameters associated with high\u2010grade tumors in univariate and multivariate analysis, while coarse chromatin pattern was significant only in a univariate analysis. The combination of absence of pleomorphism, rare single cells, tight cluster arrangement, fine chromatin pattern, and absence of macronucleoli was seen only in benign cases. Assessment of background material was helpful in the differential diagnosis and classification. Necrosis was only found in high\u2010grade cases. Diagn. Cytopathol. 2002;27:343\u2013349. \u00a9 2002 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/dc.10203","type":"journal-article","created":{"date-parts":[[2002,11,26]],"date-time":"2002-11-26T17:40:01Z","timestamp":1038332401000},"page":"343-349","source":"Crossref","is-referenced-by-count":4,"title":["Cytologic analyses of spindle\u2010cell lesions of the thorax and retroperitoneum"],"prefix":"10.1002","volume":"27","author":[{"given":"Oscar","family":"Lin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Claudia","family":"Nogueira Zerbini","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria do Ros\u00e1rio","family":"Dias de Oliveira Latorre","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Patricia E.","family":"Saigo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2002,11,25]]},"reference":[{"key":"e_1_2_1_2_2","doi-asserted-by":"publisher","DOI":"10.1093\/ajcp\/82.1.100"},{"key":"e_1_2_1_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/dc.2840100405"},{"key":"e_1_2_1_4_2","first-page":"368","article-title":"Ultrasound\u2010guided percutaneous fine needle aspiration biopsy of abdominal and retroperitoneal masses. 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