Dermatology: Practical and Conceptual Image Letter | Dermatol Pract Concept. 2024;14(1):e2024011 1 “A Strange Flower in the Garden”: The Importance of the Dermatoscope in the Assessment of Tattoos Júlia Verdaguer-Faja1, Verónica Mora-Fernandez1, Maria Fabregat-Pratdepadua1, Ane Jaka1 1 Dermatology and Venereology Department. Germans Trias i Pujol University Hospital, Universitat Autònoma de Barcelona, Badalona, Spain Citation: Verdaguer-Faja J, Mora-Fernandez V, Fabregat-Pratdepadua M, Jaka A. “A Strange Flower in the Garden”: The Importance of the Dermatoscope in the Assessment of Tattoos. Dermatol Pract Concept. 2024;14(1):e2024011. DOI: https://doi.org/10.5826/dpc.1401a11 Accepted: September 5, 2023; Published: January 2024 Copyright: ©2024 Verdaguer-Faja et al. This is an open-access article distributed under the terms of the Creative Commons Attribution- NonCommercial License (BY-NC-4.0), https://creativecommons.org/licenses/by-nc/4.0/, which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original authors and source are credited. Funding: None. Competing Interests: None. Authorship: All authors have contributed significantly to this publication. Corresponding Author: Júlia Verdaguer-Faja, Dermatology Department. Hospital Universitari Germans Trias I Pujol. Carretera de Canyet s/n. 08916, Badalona (Barcelona), Spain. Phone: 0034934978813 E-mail: verdaguer.ju@gmail.com Case Presentation A 49-year-old healthy female presented with a 12-months history of an asymptomatic red and crusty lesion on her left arm, next to a tattoo inoculated 6 years before. Cuta- neous examination showed a red plaque with yellow crust and erosions, next to the black and red tattoo (Figure 1A). Under the diagnostic suspicion of infectious impetigo vs. reactive dermatosis to tattoo ink, treatment with topical corticosteroids and antibiotics was prescribed, showing only partial improvement and persistence of the plaque at the two-month follow-up (Figure 1B). This time, the use of dermoscopy revealed small erosions, arborizing telangiecta- sias (white arrows) and concentric structures (green arrows) (Figure 1C), suggesting the diagnosis of superficial basal cell carcinoma associated to tattoo, what was later confirmed by a skin biopsy. Teaching Point Decorative tattooing involves the introduction of exogenous pigments into the dermis. Complications include primarily infections, allergy to tattoo pigments, the localization of various dermatoses to tattoos, but also benign and some- times malignant tumors arising on them [1,2], such as mela- noma or basal cell carcinoma. The occurrence of cutaneous malignancies in tattoos may be related to the “scarring pro- cess” and local chronic inflammation, and the presence of carcinogenic substances in tattoo ink. However, a directly causative relationship cannot yet be confirmed [1,2]. Although pigment allergy is the most common tattoo complication, especially when red ink is used [1], we claim the importance of using dermoscopy in the assessment of any lesion in a tattoo, as malignant tumors may also arise on them. In addition, it can also facilitate the diagnosis of 2 Image Letter | Dermatol Pract Concept. 2024;14(1):e2024011 tattoo infectious complications like viral warts, molluscum contagiousum or demodicosis, and, consequently, reduce the number of unnecessary biopsies [3]. References 1. Kluger N. An update on cutaneous complications of permanent tattooing. Expert Rev Clin Immunol. 2019;15(11):1135-1143. DOI: 10.1080/1744666X.2020.1676732. PMID: 31594417. 2. Leijs M, Schaefer H, Rübben A, Cacchi C, Rustemeyer T, van der Bent S. Cutaneous malignancies in tattoos, a case series of six patients. Curr Oncol. 2021;28(6):4721–3477. DOI: 10.3390 /curroncol28060398. PMID: 34898571. PMCID: PMC8628776. 3. Rogowska P, Sobjanek M, Sławińska M, Nowicki RJ, Szczerkowska-Dobosz A. Tattoos Dermatological Complica- tions: Analysis of 53 Cases from Northern Poland. Dermatol- ogy. 2022;238(4):799-806. DOI: 10.1159/000520752. PMID: 34969030. Figure 1 . (A) Cutaneous examination showed a red plaque with yellow crust and erosions, next to one of the tattoo red flower and black branch (tattoo of a tree in bloom with black and red colors). (B) Persistence of a red plaque, although with less crust and erosions. (C)  Examination of the red plaque with dermos- copy revealed the presence of small erosions (black arrows), arborizing telangiectasias (white arrows) and concentric structures (green arrows).