Abstract
The phenomenon of transepithelial elimination apparently is the underlying mechanism in a variety of skin disorders. Perforating dermatoses may show transepidermal or transfollicular elimination or a combination of the 2. A case of papular granuloma annulare is reported, where in one lesion the pilary apparatus actively participated in the elimination of necrobiotic collagen from the dermis. Perforating granuloma annulare with a transfollicular pathway was not previously described. A classification of perforating dermatoses is presented.

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