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The authors present a case of a 40-year-old man with an onychomatrichoma in the fourth left toenail, which was initially misdiagnosed and treated as onychomycosis.<\/jats:p>","DOI":"10.25259\/ijdvl_561_20","type":"journal-article","created":{"date-parts":[[2021,6,21]],"date-time":"2021-06-21T13:01:42Z","timestamp":1624280502000},"page":"408-410","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Onychomatricoma on the fourth toenail: A rare tumor in a rare localization"],"prefix":"10.25259","volume":"89","author":[{"given":"Sofia","family":"Antunes-Duarte","sequence":"first","affiliation":[{"name":"Department of Dermatology, Santa Maria Universitary Hospital, North Lisbon Hospital Center, Lisbon, Portugal,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ana","family":"Fraga","sequence":"additional","affiliation":[{"name":"Department of Dermatology, Santa Maria Universitary Hospital, North Lisbon Hospital Center, Lisbon, Portugal,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lu\u00eds","family":"Soares-de-Almeida","sequence":"additional","affiliation":[{"name":"Unit of Research in Dermatology, Faculty of Medicine, Institute of Molecular Medicine, University of Lisbon, Lisbon, Portugal"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2021,6,21]]},"reference":[{"key":"10.25259\/IJDVL_561_20\/ref-1","doi-asserted-by":"publisher","first-page":"510","DOI":"10.1111\/j.1365-2133.1992.tb11827.x","article-title":"Onychomatrixoma. 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