PMC3663383_01
(A & C) Clinical and dermatoscopic picture of an asymmetrically pigmented lesion on the calf. The pigmentation does not extend beyond the area of the visible scar; dermatoscopically one can see segmental radial lines radial and structureless areas. (B & D-H) Dermatopathologic images of the lesion shown in A & C. The lesion is composed of inconspicuous dermal nests of melanocytes and heavily pigmented melanocytes at the dermoepidermal junction overlying scar tissue. [Copyright:  2013 Tschandl.]
dp0301a08g001a-I.jpg
PMC3663383_01_dp0301a08g001a-I.jpg
f1-dp0301a08
A 40-year-old patient presented with a papule on the calf with irregular brown pigmentation (Figure 1).
PMC3663383_02
(A & C) Clinical and dermatoscopic picture of a brown macule on the chest. Dermatoscopically radial lines and brown clods are confined to the evident scar. (B & D-H) Dermatopathologic images of the lesion shown in A&C. Nests of melanocytes can be seen in the epidermis as well as beneath a dermal scar. [Copyright:  2013 Tschandl.]
dp0301a08g002a-I.jpg
PMC3663383_02_dp0301a08g002a-I.jpg
f2-dp0301a08
A 23-year-old woman presented with a brown macule on the chest (Figure 2).
PMC3663383_03
(A & C) Clinical and dermatoscopic picture of a brown papule on the back. Dermatoscopically one can see segmental radial lines within a hypopigmented structureless area (scar). (B & D-H) Dermatopathologic images of the lesion shown in A & C. Melanocytes in the epidermis are arranged as single cells and in confluent nests. Inconspicuous nests of small melanocytes arranged in an adnexocentric fashion can be spotted in the dermis. [Copyright:  2013 Tschandl.]
dp0301a08g003a-I.jpg
PMC3663383_03_dp0301a08g003a-I.jpg
f3-dp0301a08
The third case is a 22-year-old patient with a brown papule on the back (Figure 3).