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Difference between revisions of "Talk:Melanocytic lesions"
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===Final=== | ===Final=== | ||
A. Cheek lesion ("nevus"), right, serial excision - Compound congenital-type nevus; lesional tissue extend to the multiple side margins but not the deep margins | A. Cheek lesion ("nevus"), right, serial excision - Compound congenital-type nevus; lesional tissue extend to the multiple side margins but not the deep margins | ||
== Blue nevus == | |||
===Microscopic description=== | |||
The sections show a dermal lesion consisting of heavily pigmented epithelioid and spindle cells interspersed between collagen bundles. There is no nuclear atypia and the lesion does not extend into the superficial dermis. Lesional cells decrease in size and become more spindled with increasing depth. No mitotic activity is identified. | |||
===Final diagnosis=== | |||
Skin, posterior thorax, biopsy:<br> | |||
Blue nevus, see comment. | |||
Comment: Nevus cells are seen focally at the edges of the section; clinical correlation for excision status is required. | |||
== Intradermal nevus == | |||
===Microscopic=== | |||
The sections show skin with small, nested, epithelioid intradermal melanocytes without nuclear atypia that become spindled with depth. No mitotic activity is identified. No intraepidermal component is identified. | |||
===Final diagnosis=== | |||
Skin, right thigh ("mole"), excision: <br> | |||
- POLYPOID INTRADERMAL NEVUS. | |||
== Dysplastic nevus versus lentiginous nevus of the elderly == | |||
<pre> | |||
SKIN LESION, LEFT LOWER BACK, SHAVE BIOPSY: | |||
- SUPERFICIAL COMPOUND NEVUS WITH MODERATE CYTOLOGIC ATYPIA AND MODERATE | |||
ARCHITECTURAL DISORDER, MARGINALLY EXCISED, SEE COMMENT. | |||
COMMENT: | |||
The nevus shows lentiginous features not otherwise classified with overlap between | |||
dysplastic nevus and lentiginous nevus of the elderly. Suggest a conservative re-excision. | |||
</pre> | |||
== Spongiotic changes == | |||
<pre> | |||
SKIN LESION, BACK, BIOPSY: | |||
- SUPERFICIAL LENTIGINOUS COMPOUND NEVUS WITH DERMATITIC CHANGES AND CHANGES | |||
SUGGESTIVE OF REMOTE EPIDERMAL NECROSIS, EXCISED IN PLANE OF SECTION. | |||
</pre> | |||
===Micro=== | |||
The sections show skin with pigmented junctional melanocytes, acanthosis, pigmented | |||
hyperkeratosis, and hypergranulosis. Rare dermal melanocytes are seen. There is no | |||
significant nuclear atypia. No mitotic activity is apparent. The lesion is clear of the | |||
margins in the planes of section. | |||