Porokeratosis
LEGEND
Cornoid lamella at each end, composed of a column of parakeratosis
Hypogranulosis beneath the column of parakeratosis
The epidermis between the two cornoid lamellae may be hyperplastic, normal or atrophic
Perivascular or band-like lymphocytic infiltrate beneath the lamella
Porokeratosis
LEGEND
- Cornoid lamella composed of a column of parakeratosis with underlying hypogranulosis
Porokeratosis
LEGEND
Between the cornoid lamellae, the stratum corneum is normal (In this case, basket-weave orthokeratosis is noted)
- Cornoid lamella
Porokeratosis
LEGEND
- Dyskeratosis may be observed beneath the cornoid lamella
Cornoid lamella
Lymphocytic infiltrate beneath the lamella
Porokeratosis
LEGEND
Cornoid lamella
Hypogranulosis and dyskeratosis beneath the cornoid lamella
