PMC3842183_01
A horny growth of around 2 cm in length with a broad base over the palmar aspect of the middle phalanx of the left middle finger.
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PMC3842183_01_can-7-376fig1.jpg
figure1
On examination, a firm, horny, and curved growth of around 2 cm in length with a broad base was present over the palmar aspect of middle phalanx of the left middle finger with no erythema at the base (Figure 1).
(a) Hyperkeratosis and focal parakeratosis, Hematoxylin & Eosin (H & E) stain 4x; (b) loss of polarity and disordered arrangement of keratinocyte in stratum malphigian with part of normal dermis, H & E stain 10x.
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PMC3842183_01_can-7-376fig2.jpg
figure2
The epidermis was thickened and showed irregular downward proliferation in dermis (Figure 2a). A varying proportion of keratinocyte in the stratum malphigian showed a loss of polarity and disordered arrangement with part of the normal dermis showing collagen bundles horizontally placed (Figure 2b).