A 70-year-old male presents
with thickening and hyperpigmentation of the skin in the axillae, neck,
genitals and groin. On further inspection there is involvement of the mucous
membranes as well and on palpation the lesions in the skin have a velvety
texture. The palms of the patients hands appear thicken as well.
Which type of acanthosis
nigricans is this likely to be?