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Correspondence |

The Ink Test: Identifying 3-Dimensional Features of Seborrheic Keratoses Under Dermoscopy

Sarah Yagerman, BS; Ashfaq A. Marghoob, MD
JAMA Dermatol. 2013;149(4):497-498. doi:10.1001/jamadermatol.2013.2233.
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Correctly classifying a lesion under dermoscopy depends on the ability to categorize a lesion as either melanocytic or not.

Correspondence: Dr Marghoob, Memorial Sloan-Kettering Skin Cancer Center Hauppauge, 800 Veterans Memorial Hwy, Second Floor, Hauppauge, NY 11788 (marghooa@mskcc.org).

Conflict of Interest Disclosures: None reported.

Additional Contributions: We would like to thank the dermatologists who attended the 2012 dermoscopy course at Memorial Sloan-Kettering Skin Cancer Center.

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Figure 1. Dermoscopic images. A and B, The globulelike structures (A) are due to pigmented comedolike openings (B) resembling globules under dermoscopy. C and D, The networklike structures (C) are due to comedo openings and crypts, gyri and/or sulci (D) arranged in such a manner as to look like a network.

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Figure 2. Dermoscopic images presented at a conference. A, At a recent dermoscopy conference with more than 200 participants, over 50% thought that the pictured lesion was a melanocytic tumor. B, After the ink test, over 90% of participants diagnosed this lesion as a seborrheic keratosis.




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