{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T05:07:02Z","timestamp":1772168822751,"version":"3.50.1"},"update-to":[{"DOI":"10.12688\/f1000research.142548.1","type":"new_version","label":"New version","source":"publisher","updated":{"date-parts":[[2024,4,8]],"date-time":"2024-04-08T00:00:00Z","timestamp":1712534400000}}],"reference-count":15,"publisher":"F1000 Research Ltd","license":[{"start":{"date-parts":[[2024,4,8]],"date-time":"2024-04-08T00:00:00Z","timestamp":1712534400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["f1000research.com"],"crossmark-restriction":false},"short-container-title":["F1000Res"],"abstract":"<ns3:p>Background Epidermal nevus sebaceous, commonly known as the nevus sebaceous of Jadassohn, is a congenital sebaceous hamartoma. It typically manifests as a single yellowish plaque across the head and neck and is composed of sebaceous glands. It commonly occurs during infancy and grows during puberty. Usually, it follows a benign course; however, in a few cases, it can be malignant. This is the case of a 13-year-old child with verrucous plaques on the temple and scalp. Case report We report the case of a 13-year-old boy with a steadily developing hyperpigmented verrucous plaque on the scalp and ipsilateral side of his face. A dermoscopic examination revealed ridges and fissures in a cerebriform pattern with yellowish-gray globules and a papillary appearance. Physical examination and laboratory tests revealed no abnormalities. Biopsies were taken from the scalp and temple area, and the findings were consistent with the diagnosis of nevus sebaceous. The patient was referred to a plastic surgeon for a staged excision. Conclusions We describe a unique example of a sebaceous nevus that affected the scalp and ipsilateral side of the face. As this hamartomatous growth carries the risk of cancer development, a dermatologist must identify the condition and begin treatment before malignant transformation occurs. This example of multiple verrucous plaques is an exception.<\/ns3:p>","DOI":"10.12688\/f1000research.142548.2","type":"journal-article","created":{"date-parts":[[2024,4,8]],"date-time":"2024-04-08T05:25:07Z","timestamp":1712553907000},"page":"1514","update-policy":"https:\/\/doi.org\/10.12688\/f1000research.crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Case Report: Leathery black plaque on the temple and scalp"],"prefix":"10.12688","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6484-5844","authenticated-orcid":false,"given":"Kaveri","family":"Rusia","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2704-9165","authenticated-orcid":false,"given":"Bhushan","family":"Madke","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-1382-897X","authenticated-orcid":false,"given":"Soham","family":"Meghe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-6270-5299","authenticated-orcid":false,"given":"Yash","family":"Kashikar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2560","published-online":{"date-parts":[[2024,4,8]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"200-202","DOI":"10.1111\/j.1346-8138.2010.00957.x","article-title":"Large, papillomatous, and pedunculated nevus sebaceous.","volume":"38","author":"H Lin","year":"2011 Feb","journal-title":"J. Dermatol."},{"key":"ref2","doi-asserted-by":"publisher","first-page":"83-91","DOI":"10.1159\/000460258","article-title":"Dermoscopic analysis of nevus sebaceus of Jadassohn: a study of 13 cases.","volume":"3","author":"A Kelati","year":"2017 May 2","journal-title":"Skin Appendage Disord."},{"key":"ref3","doi-asserted-by":"publisher","first-page":"878","DOI":"10.4103\/idoj.IDOJ_113_19","article-title":"Nevus sebaceous on face: Histopathological and dermoscopic correlation.","volume":"11","author":"P Sahu","year":"2020 Sep","journal-title":"Indian Dermatol. Online J."},{"key":"ref4","doi-asserted-by":"publisher","first-page":"5-10","DOI":"10.4103\/0974-7753.179394","article-title":"Trichoscopy: the best auxiliary tool in the evaluation of nevus sebaceous.","volume":"8","author":"B Ankad","year":"2016 Jan","journal-title":"Int. J. 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Dermatol."},{"key":"ref11","doi-asserted-by":"publisher","first-page":"355-372","DOI":"10.1007\/BF01842810","article-title":"Bemerkungen zur histology der systematisierten naevi und ubertigdrusen naevi.","volume":"33","author":"J Jadassohn","year":"1895","journal-title":"Arch. Dermatol. Syphilol."},{"key":"ref12","doi-asserted-by":"publisher","first-page":"112-117","DOI":"10.15386\/mpr-1658","article-title":"Nevus sebaceus of Jadassohn-High frequency ultrasound imaging and videodermoscopy examination. Case presentation.","volume":"94","author":"A Bezugly","year":"2021 Jan","journal-title":"Med. Pharm. Rep."},{"key":"ref13","doi-asserted-by":"publisher","first-page":"1480","DOI":"10.3390\/diagnostics13081480","article-title":"Nevus Sebaceous of Jadassohn in Adults\u2014Can Reflectance Confocal Microscopy Detect Malignant Transformation?","volume":"13","author":"V Voiculescu","year":"2023 Apr 20","journal-title":"Diagnostics."},{"key":"ref14","doi-asserted-by":"publisher","DOI":"10.1097\/MD.0000000000029988","article-title":"Malignant transformation of nevus sebaceous to basal-cell carcinoma: Case series, literature review, and management algorithm.","volume":"101","author":"Y Lee","year":"2022 Aug 5","journal-title":"Medicine."},{"key":"ref15","doi-asserted-by":"publisher","first-page":"189-191","DOI":"10.1111\/j.1525-1470.1993.tb00053.x","article-title":"Linear nevus sebaceus of Jadassohn treated with the carbon dioxide laser.","volume":"10","author":"R Ashinoff","year":"1993 Jun","journal-title":"Pediatr. 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