Lentiginosis profusa is a dermatological abnormality of dogs characterized by excess numbers of superficial lentigines (singular: lentigo).
A predisposition has been reported in the Pug.
Macroscopically the lentigines appear as small black pigmented macules produced by herplastic melanocytes. They measure up to 10 mm in diameter and commonly occur in the skin of the ventral parts of the body, inguinal region, prepuce and nipples.
Skin biopsies usually reveal localised acanthosis and hyperkeratosis with prominent rete ridges and epidermal hyperpigmentation.
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- Coyner K & Loeffler D (2012) Topical imiquimod in the treatment of two cutaneous melanocytomas in a dog. Vet Dermatol 23(2):145-149