Dermatology: Practical and Conceptual Image Letter | Dermatol Pract Concept. 2022;12(3):e2022102 1 Dermoscopy of Atrofic Dermatofibroma as a Rare Variant Tugba Kevser Ustunbas Uzuncakmak1, Bengu Cobanoglu Simsek2 1 Sisli Memorial Hospital, Department of Dermatology, Istanbul, Turkey 2 Istanbul Medeniyet University Medical Faculty, Department of Pathology, Istanbul, Turkey Citation: Uzuncakmak TKU, Cobanoglu Simsek B. Dermoscopy of Atrofic dermatofibroma as a rare variant. Dermatol Pract Concept. 2022;12(3):e2022102. DOI: https://doi.org/10.5826/dpc.1203a102 Accepted: October 25, 2021; Published: July 2022 Copyright: ©2022 Uzuncakmak 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: Both authors have contributed significantly to this publication. Corresponding author: Dr Tugba Kevser Ustunbas Uzuncakmak, MD, Sisli Memorial Hospital, Department of Dermatology, Istanbul, Turkey, Telephone: 0 +90- (530) 6640226 E-mail: drtugbakevser@gmail.com Case Presentation  A 12-year-old boy presented with a 1-year history of slowly growing, 1,5 cm x 2 cm, livedoid, hard and depressed livedoid lesion on his back (Figure 1, A and B). Dermoscopic evalu- ation showed homogenous gray-whitish and livedoid large clods and crystalline structures (Figure 1C). The patient was referred for total excision. Histologically, fibro-histiocytic benign tumoral lesion located in a dense collagenized stroma separated from the epidermis by a cell-poor zone was observed. A few scattered lymphocytes were observed in between (Figure 1, D and E). Teaching point Atrophic dermatofibroma is a rare variant of dermato- fibroma which was first described by Page and Assaad in 1987 [1]. It is commonly seen on the upper back of mid- dle-aged women, and the mean age of the patients affected is 49.7 years, according to literature [1]. We present this uncommon entity, which is in the differential diagnosis with many benign and malignant lesions including atrophic scars, anetodermas, morphea, atrophic dermatofibrosarcoma pro- tuberans and sclerosing basal cell carcinomas, as it is rare in the pediatric age group [2]. 2 Image Letter | Dermatol Pract Concept. 2022;12(3):e2022102 References 1. Ohnishi T, Sasaki M, Nakai K, Watanabe S. Atrophic dermatofi- broma. J Eur Acad Dermatol Venereol. 2004;18(5):580-583. DOI: 10.1111/j.1468-3083.2004.00975.x. PMID: 15324399. 2. Mota AN, Tortelly VD, Obadia DL, Silva RS. Atrophic der- matofibroma. An Bras Dermatol. 2013;88(5):793-795. DOI: 10.1590/abd1806-4841.20132234. PMID: 24173186. PMCID: PMC3798357. Figure 1. (A and B) Clinical presentation of a 1,5 cm x 2 cm, hard and depressed livedoid lesion on the back. (C) Gray-whitish and livedoid large clods with a homogenous distribution seen at dermoscopy. (D and E) Correlated histological images: fibro-histiocytic benign tumoral lesion located in a dense collagenized stroma separated from the epidermis by a cell-poor zone (H&E, x100, x200).