Dermoscopy in assisting the recognition of ashy dermatosis

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Presentation transcript:

Dermoscopy in assisting the recognition of ashy dermatosis Enzo Errichetti, MD, Vito Angione, MD, Giuseppe Stinco, MD JAAD Case Reports Volume 3, Issue 6, Pages 482-484 (November 2017) DOI: 10.1016/j.jdcr.2017.06.022 Copyright © 2017 American Academy of Dermatology, Inc. Terms and Conditions

Fig 1 A, Several slightly itchy, 5- to 8-mm in diameter, smooth, brown-grayish macules on the abdomen. B, An instance of lichen planus pigmentosus as a comparison; clinical picture is quite similar to that of the previous case, with brown-grayish macules on the abdomen. JAAD Case Reports 2017 3, 482-484DOI: (10.1016/j.jdcr.2017.06.022) Copyright © 2017 American Academy of Dermatology, Inc. Terms and Conditions

Fig 2 A, Dermoscopic examination (carried out with DermLite DL3 ×10; 3Gen, San Juan Capistrano, CA) shows gray-bluish small dots over a bluish background; magnification of the gray-bluish dots in the box. B, Dermoscopy (carried out with DermLite DL3 ×10; 3Gen, San Juan Capistrano, CA) of the lichen planus pigmentosus case (shown in Fig 1, B) displays a brownish background along with brownish dots, which are larger than those seen in the previous case. JAAD Case Reports 2017 3, 482-484DOI: (10.1016/j.jdcr.2017.06.022) Copyright © 2017 American Academy of Dermatology, Inc. Terms and Conditions

Fig 3 A, Histologic assessment finds pigment incontinence and melanophages mainly located in the reticular dermis (black circle); neither vacuolar degeneration nor lichenoid infiltrate is evident, which is consistent with the diagnosis of ashy dermatitis. B, Histology of lichen planus pigmentosus shows a typical lichenoid infiltrate in the papillary dermis (just below the epidermis), which is responsible for a dermoepidermal junction damage, with consequent pigment incontinence (black circles) in the superficial dermis that is seen as brownish dots/globules on dermoscopy. (A, Hematoxylin-eosin stain; original magnification: ×100.) JAAD Case Reports 2017 3, 482-484DOI: (10.1016/j.jdcr.2017.06.022) Copyright © 2017 American Academy of Dermatology, Inc. Terms and Conditions