Figure 3.
Clinical and pathological features of two patients with NC. (A) Clinical features of the first patient with NC: Numerous keratotic papules and comedo-like lesions on the waist and blackheads on parts of the lesions. (B) Clinical manifestation of the second patient: Aggregated, dilated hair follicles, blackheads with cysts, fistulas and abscesses on the neck. (C and D) Histopathology images of the two patients with NC; dilated follicular ostia filled with keratin layers were observed (hematoxylin and eosin, magnification, ×200). NC, nevus comedonicus.