| Image Number 465 (Twin cases) |
thick network
grey dots
blue-white structures
dotted vessels
thin serpentine vessels
network is also thickened
grey dots
monomorphic dotted vessels
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Site: Back
Diagnosis: Twin cases
Morphologies:
Kittler >1P lines reticular Pasym >1colour , Kittler >1P lines reticular Pasym >1colour
Sex: M
Age: 65
Type: Heine
Submitted by: Jean-Yves Gourhant
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Description:
On the left, a brown lesion with by place an irregular (thick network), some grey dots, some blue-white structures, and an excentric skin-coloured structureless area. In this area, there is a polymorphic vascular pattern, with some dotted vessels and some short thin serpentine vessels. On the right, a mirror image of the left: a crescent shaped brown lesion. The network is also thickened by place, there are some grey dots (less than on the left), and a structureless skin-coloured area with monomorphic dotted vessels. No blue-white structures.
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History: These are "twin cases" which show striking similarities: shape, color, structures. But one is "evil", the other gentle.
In fact the left one is a malignant Melanoma (SSM, Clark III, Breslow 0.47 (no regression).
The right one (courtesy of Dr Alan Cameron)is a dysplastic compound nevus with mild atypia.
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