1. Keratoacanthoma centrifugum marginatum—A rare variant of keratoacanthoma: Case report and literature review 
Chao Shiang Sung, Fu Chen Chuang, Ji Chen Ho, Shang Hong Lin 
Dermatologica Sinica 
Volume 32, Issue 1, Pages (March 2014)
DOI: /j.dsi
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2. Figure 1
(A) Multiple annular plaques on the upper limbs. (B) Multiple annular erythematous plaques on the trunk and neck. (C) Central cribriform atrophic scar with papulonodular hyperkeratotic borders.
Dermatologica Sinica  , 25-28DOI: ( /j.dsi )
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3. Figure 2
The pathology resembles the classic keratoacanthoma dome-shaped nodular lesion with central crater-like hyperkeratosis (hematoxylin & eosin, original magnification 20×).
Dermatologica Sinica  , 25-28DOI: ( /j.dsi )
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4. Figure 3
(A) Pretreatment lesions: annular plaques with papulonodular hyperkeratotic borders and central atrophic scarring. (B) Skin lesions after 3 months of treatment: the borders of the skin lesions showed flattening.
Dermatologica Sinica  , 25-28DOI: ( /j.dsi )
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