{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,17]],"date-time":"2026-10-17T22:06:47Z","timestamp":1792274807374,"version":"4.4.0"},"reference-count":62,"publisher":"SAGE Publications","issue":"4","license":[{"start":{"date-parts":[[2009,7,3]],"date-time":"2009-07-03T00:00:00Z","timestamp":1246579200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int J Surg Pathol"],"published-print":{"date-parts":[[2010,8]]},"abstract":"<jats:p>There is a worldwide geographical variation in the incidence of penile squamous cell carcinoma (PSCC); some subtypes are HPV-related (warty, basaloid) while others (keratinizing variants) are not. The aims of this study were to compare the distribution of different histological subtypes of PSCC from regions of low (Paraguay, 144 cases) and high (USA, 157 cases) incidence and to identify and compare tumors with and without warty and\/or basaloid morphology. The distribution of subtypes in the Paraguayan and the American series was: usual, 49.3 and 46.5%; verrucous, 8.3 and 7.6%; papillary NOS, 7.6 and 5.7%; warty, 6.9 and 8.3%; basaloid, 4.2 and 7.0%; sarcomatoid, 0.7 and 0.6%; adenosquamous, 3.5 and 0.6%; and mixed, 19.4 and 23.6%, respectively. The distribution of mixed PSCC was: warty-basaloid, 50.0 and 59.5%; usual-verrucous, 21.4 and 21.6%; usual-warty, 14.3 and 8.1%; usual-basaloid, 7.1 and 0.0%; usual-papillary, 3.6 and 5.4%; and others, 3.6 and 5.4%, respectively. In conclusion, we found no geographical difference in the incidence of histological subtypes ( p = 0.6501), mixed PSCC ( p = 0.5937) or HPV-related tumors ( p = 0.2505). Geographical variation may be the result of staging variation at clinical presentation or of pathological diagnosis. The identification of similar histological subtypes in both series validates this classification approach for penile cancer. The tendency for typical SCC to mix with verrucous and papillary carcinomas and of the basaloid to preferentially mix with benign condyloma and condylomatous (warty) carcinomas would support the hypothesis of the existence of an etiologically different dual population of penile tumors.<\/jats:p>","DOI":"10.1177\/1066896909339184","type":"journal-article","created":{"date-parts":[[2009,7,3]],"date-time":"2009-07-03T20:25:11Z","timestamp":1246652711000},"page":"268-277","source":"Crossref","is-referenced-by-count":31,"title":["Comparison of Subtypes of Penile Squamous Cell Carcinoma From High and Low Incidence Geographical Regions"],"prefix":"10.1177","volume":"18","author":[{"given":"Alcides","family":"Chaux","sequence":"first","affiliation":[{"name":"Instituto de Patolog\u00eda e Investigaci\u00f3n, Asunci\u00f3n, Paraguay"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cecilia","family":"Lezcano","sequence":"additional","affiliation":[{"name":"Instituto de Patolog\u00eda e Investigaci\u00f3n, Asunci\u00f3n, Paraguay"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonio L.","family":"Cubilla","sequence":"additional","affiliation":[{"name":"Instituto de Patolog\u00eda e Investigaci\u00f3n, Asunci\u00f3n, Paraguay,"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pheroze","family":"Tamboli","sequence":"additional","affiliation":[{"name":"MD Anderson Cancer Center, Houston, Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jae","family":"Ro","sequence":"additional","affiliation":[{"name":"Methodist Hospital, Houston, Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alberto","family":"Ayala","sequence":"additional","affiliation":[{"name":"Methodist Hospital, Houston, Texas"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2009,7,3]]},"reference":[{"key":"atypb1","volume-title":"Cancer Incidence in Five Continents. 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