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Home » Topics A–Z » Annular granular pattern dermoscopy
Author: Naomi Ashman, Dermoscopist, Torbay Skin, Auckland, New Zealand; DermNet New Zealand Editor in Chief Adjunct A/Prof Amanda Oakley, Dermatologist, Hamilton, New Zealand. Created December 2018.
An annular granular pattern consists of grey or brown dots (granular) around follicular openings (annular) and is regarded as a characteristic of lentigo maligna. In descriptive terminology, it is known as 'grey dots arranged around follicular openings' [1].
Through the dermatoscope, an annular granular pattern is seen as:
Through the dermatoscope, an annular granular pattern may be seen in the following lesions:
In lichen planus-like keratosis, grey dots around the follicular openings tend to be coarse, regular and widespread, whereas in lentigo maligna they are much finer and focal.
Annular granular pattern seen in dermoscopy of lichen planus-like keratosis Annular granular pattern seen in dermoscopy of lichen planus-like keratosis Annular granular pattern seen in dermoscopy of lichen planus-like keratosis Annular granular pattern seen in pigmented actinic keratosis Annular granular pattern seen in lentigo maligna demoscopy Annular granular pattern seen in dermoscopy of lentigo maligna
Histologically, slate grey dots are due to melanin in melanophages.
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