Stephanie W. Hu, MD, Steven R. Tahan, MD, Caroline C. Kim, MD

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Cutaneous polyarteritis nodosa presenting as a solitary blue toe

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Presentation transcript:

Follicular malignant melanoma: A case report of a metastatic variant and review of the literature Stephanie W. Hu, MD, Steven R. Tahan, MD, Caroline C. Kim, MD Journal of the American Academy of Dermatology Volume 64, Issue 5, Pages 1007-1010 (May 2011) DOI: 10.1016/j.jaad.2009.12.033 Copyright © 2009 American Academy of Dermatology, Inc. Terms and Conditions

Fig 1 Polarized light dermoscopy of a black 1.5-mm perifollicular papule in the left beard area revealed a dark blue-grey, homogenous round area surrounding a coarse central hair. A faint blue-grey “shadow” was seen superior to the area, as can be seen superior to all hairs. (Original magnification: ×10.) Journal of the American Academy of Dermatology 2011 64, 1007-1010DOI: (10.1016/j.jaad.2009.12.033) Copyright © 2009 American Academy of Dermatology, Inc. Terms and Conditions

Fig 2 A, Low power photomicrograph of heavily pigmented melanoma involving entire length of hair follicle to base of the biopsy, including sebaceous duct, with invasion into adjacent papillary dermis. The Breslow depth was measured from inner root sheath of the hair follicle to the deepest penetration into the papillary dermis. There is no involvement of the shoulders of the follicular infundibulum or adjacent epidermis. B, Upper follicle showing markedly atypical melanocytes singly and in small nests occupying the full-thickness of the follicular epithelium with high-level Pagetoid spread through to the inner root sheath with shedding into the follicular lumen consistent with in situ melanoma. There is invasion into the adjacent papillary dermis. (Hematoxylin–eosin stain; original magnification: A, ×40; B, ×100.) Journal of the American Academy of Dermatology 2011 64, 1007-1010DOI: (10.1016/j.jaad.2009.12.033) Copyright © 2009 American Academy of Dermatology, Inc. Terms and Conditions