Common blue nevus – low magnification
LEGEND
Normal epidermis
Absence of nests
Presence of grouped spindle-shaped dendritic melanocytes in the dermis, arranged in a bell-clapper shape (deep bulbous protrusion into the dermis)
Collagen sclerosis
Common blue nevus – high magnification
LEGEND
- Presence of melanophages (i.e., macrophages that have phagocytosed melanin) and melanin granules
Spindle-shaped dentritic melanocytes
Common blue nevus – low magnification
LEGEND
Normal epidermis
Collagen sclerosis
- Presence of grouped spindle-shaped dendritic melanocytes in the dermis, arranged in a bell-clapper shape (deep bulbous protrusion into the dermis)
Common blue nevus – high magnification
LEGEND
- Presence of melanophages
- Spindle-shaped dentritic melanocytes
Common blue nevus
LEGEND
Here is another typical example
Presence of diffusely grouped spindle-shaped dendritic melanocytes in the dermis
Collagen sclerosis
Normal epidermis
- Numerous melanophages in the dermis
