{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,21]],"date-time":"2025-10-21T15:09:06Z","timestamp":1761059346690},"reference-count":29,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2012,6,14]],"date-time":"2012-06-14T00:00:00Z","timestamp":1339632000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acad Dermatol Venereol"],"published-print":{"date-parts":[[2013,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:bold>Background\u2002<\/jats:bold>The asymmetric laterality of UV\u2010linked skin cancer, including melanoma and non\u2010 melanoma skin cancers has been identified. However, there seems to be a paucity in the data correlating the laterality and presence of Merkel cell polyoma virus (MCPyV) DNA as an aetiological factor for this phenomenon.<\/jats:p><jats:p><jats:bold>Objective\u2002<\/jats:bold>To study the laterality in Finnish primary Merkel cell carcinoma (MCC) patients, and compare statistically clinicopathological variables with lateral distribution.<\/jats:p><jats:p><jats:bold>Methods\u2002<\/jats:bold>Data on 171 primary MCC patients and tumour characteristics; and the presence of MCPyV DNA or large T antigen in the tumour tissue, MCPyV copy number and MCC specific mortality were compared statistically against left, right or midline presentation.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold>Fiftysix percentage of tumours presented on the left, 37% on the right and 7% in the midline. Excluding the latter category, the left\u2010sided excess was 60%. The excess of left\u2010sided tumours was noted in head and neck with left\u2010right ratio 3.22, face 1.5, forearm and hand 4.0 and the leg and foot 2.4. On the trunk, tumours occurred equally on both sides. Statistically significant difference was noted for smaller midline tumours (<jats:italic>P\u2003<\/jats:italic>&lt;\u20030.0065). Left\u2010sided tumours associated with lower median Merkel cell polyoma virus copy number (<jats:italic>P\u2003<\/jats:italic>&lt;\u20030.042) although the trend vanished when comparing the groups separately.<\/jats:p><jats:p><jats:bold>Conclusion\u2002<\/jats:bold>We confirmed left\u2010sided asymmetry in MCC distribution. In areas commonly hidden form solar exposure, the occurrence was symmetrical. Detailed aetiology of these findings remains unclear, plausible explanations include biology of viral associated tumours or alterations in Nodal transcription factor pathway.<\/jats:p>","DOI":"10.1111\/j.1468-3083.2012.04600.x","type":"journal-article","created":{"date-parts":[[2012,6,14]],"date-time":"2012-06-14T14:31:41Z","timestamp":1339684301000},"page":"884-888","source":"Crossref","is-referenced-by-count":10,"title":["Lateral distribution of Merkel cell carcinoma in a nationwide cohort"],"prefix":"10.1111","volume":"27","author":[{"given":"V.","family":"Koljonen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N.","family":"Kluger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"H.","family":"Sihto","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"T.","family":"B\u00f6hling","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2012,6,14]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(77)90979-5"},{"key":"e_1_2_6_3_2","first-page":"617","article-title":"An appraisal of left and right breast cancer","volume":"23","author":"Garfinkel L","year":"1959","journal-title":"J Natl Cancer Inst"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10552-005-0615-9"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejca.2007.09.021"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaad.2009.11.032"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaad.2010.05.026"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1001\/archderm.144.4.556"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jaad.2010.06.062"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/ijc.10321"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1200\/JCO.2000.18.12.2493"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.3201\/eid1409.080651"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1093\/jnci\/djp139"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1038\/jid.2008.229"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1126\/science.1152586"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejca.2011.06.001"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1158\/1078-0432.CCR-10-3363"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0560.2009.01370.x"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1093\/jnci\/djq120"},{"key":"e_1_2_6_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejca.2010.11.002"},{"key":"e_1_2_6_21_2","unstructured":"World Health Organization. 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