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No cadaveric study has simultaneously evaluated prevalence, detailed morphometry, and a data-driven SupNC classification using principal component analysis (PCA). This study determined SupNC prevalence in cadavers and proposed a clinically oriented classification integrating morphological and quantitative parameters.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Material and methods<\/jats:title>\n                    <jats:p>A cross-sectional cadaveric study analyzed 59 hemisections with preserved nasal conchae. Conchae were counted, and SupNCs classified according to Orhan and a new system. Morphometry was obtained using digital calipers and ImageJ.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Of 59 hemisections, 37 (63%) had three conchae, 21 (35%) four, and 1 (2%) five. SupNC was present in 22\/59 (37.3%) and ZC in 1\/59 (1.7%), associated with SupNC. Significant differences were found between hemisections with and without extranumerary conchae in middle concha area (3.68\u2009\u00b1\u20091.07 vs. 4.45\u2009\u00b1\u20091.20 mm\n                      <jats:sup>2<\/jats:sup>\n                      ), superior concha area (1.26\u2009\u00b1\u20090.40 vs. 0.94\u2009\u00b1\u20090.36 mm\n                      <jats:sup>2<\/jats:sup>\n                      ), length (26.13\u2009\u00b1\u20094.19 vs. 21.93\u2009\u00b1\u20093.94\u00a0mm), and height (0.72\u2009\u00b1\u20090.24 vs. 0.45\u2009\u00b1\u20090.13\u00a0mm). Concha number strongly correlated negatively with nasal cavity height (r\u2009=\u2009\u20130.83). PCA identified two clusters: Straight (Type I) and Triangular (Type II) SupNCs.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>SupNC was relatively common, whereas ZC was rare. The proposed morphology- and morphometry-based classification may improve preoperative CT evaluation and intraoperative orientation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s00276-026-03902-1","type":"journal-article","created":{"date-parts":[[2026,5,28]],"date-time":"2026-05-28T14:23:35Z","timestamp":1779978215000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Supreme nasal conchae in human cadavers: prevalence, morphometry, and a new classification proposal"],"prefix":"10.1007","volume":"48","author":[{"given":"Mauro Bezerra","family":"Montello","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sofia Helyeth Ramirez","family":"Cardenas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Them\u00edstocles","family":"da Silva Negreiros Neto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriel Vit\u00f3rio","family":"de Ara\u00fajo Suassuna","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wig\u00ednio Gabriel","family":"Lira-Bandeira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ingrid C.","family":"Landfald","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"\u0141ukasz","family":"Olewnik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Judney Cley","family":"Cavalcante","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bento Jo\u00e3o","family":"Abreu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,5,28]]},"reference":[{"key":"3902_CR1","doi-asserted-by":"publisher","DOI":"10.7759\/cureus.8132","volume":"12","author":"SN Abdullah","year":"2020","unstructured":"Abdullah SN, Abdullah B (2020) Supreme nasal turbinate as an additional surgical landmark in endoscopic sinus and skull base surgeries. 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