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Difference between revisions of "Acral nevus"
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*Should be bisected perpendicular to the dermatoglyphs (ridges).<ref name=pmid22703907/> | *Should be bisected perpendicular to the dermatoglyphs (ridges).<ref name=pmid22703907/> | ||
**Lesions sectioned parallel to the ridges (on microscopy) may appear to have confluent junctional nests (leading to the diagnosis of melanoma). | **Lesions sectioned parallel to the ridges (on microscopy) may appear to have confluent junctional nests (leading to the diagnosis of melanoma). | ||
===Image=== | |||
*[http://www.dermoscopy.org/consensus/2a_12.asp Acral nevus with parallel furrow-pattern (dermoscopy.org)] | |||
==Microscopic== | ==Microscopic== | ||
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DDx: | DDx: | ||
*Acral lentiginous [[melanoma]]. | *Acral lentiginous [[melanoma]]. | ||
==Sign out== | |||
<pre> | |||
Lesion, Sole of Left Foot, Excision: | |||
- Benign acral compound nevus. | |||
</pre> | |||
===Alternate=== | |||
<pre> | |||
Skin Lesion, Plantar Aspect Left Foot, Excision: | |||
- Benign compound nevus, completely excised. | |||
</pre> | |||
===Micro=== | |||
The sections show melanocytes predominantly in the superficial dermis. Rare melanocytic nests are seen at the dermal-epidermal junction. There is no pagetoid spread of melanocytes in the epidermis at the edge of the lesion. The lesion is symmetrical in its architecture. Superficially, melanocytes are in nests and pigment is present. The melanocytes mature with depth. No mitotic activity is appreciated. The lesion is clear of the margin (clearance ~ 3 mm). | |||
==See also== | ==See also== | ||