PMC3937483_01
Bosselated irregular non-tender skin colored swelling over the occipital region extending toward the nape of the neck
IDOJ-5-34-g001.jpg
PMC3937483_01_IDOJ-5-34-g001.jpg
F1
A 28-year-old male patient presented to the skin out-patient department with history of a huge progressively increasing swelling over the back of the scalp [Figure 1a] and multiple black nodules at various parts of the body. There were certain areas of depigmentation [Figure 1c along with blue streaks over the swelling. Section from the specimen showed multiple nests and cords of nevus cells in the upper dermis, which contained a moderate amount of melanin [Figure 1b].
x400, H and E showing multiple nests and cords of nevus cells in the upper dermis, which contain a moderate amount of melanin
IDOJ-5-34-g002.jpg
PMC3937483_01_IDOJ-5-34-g002.jpg
F2
There were multiple hyperpigmented nodules distributed over different areas of the body such as mandible, flanks, abdomen [Figure 2b], front and back of both thighs, right knee joint, lower leg [Figure 2e], right sole and over volar aspect of first and second finger of the left hand [Figure 2a]. Section from the body lesion showed deeply pigmented dendritic melanocytes in addition to nests and fascicles of spindle shaped cells with abundant pale cytoplasm containing little melanin [Figures 2c and d].