Two Cases of Pedunculated Inverted Follicular Keratosis / 대한피부과학회지

Inverted follicular keratosis is a benign, solitary skin lesion that is mainly diagnosed histologically, rather than clinically. The pathogenesis of inverted follicular keratosis has not been elucidated. It is still controversial as to whether the inverted follicular keratosis is a distinct hair follicle lesion, an old lesion of verruca vulgaris, or an irritated seborrheic keratosis. It is usually presented with a verrucous firm papule or nodular lesion clinically, and it commonly mimics other proliferative skin lesions, such as warts, cutaneous horn and basal cell carcinoma. However, inverted follicular keratosis with a pedunculated feature has been hardly found. Clinical morphology of the inverted follicular keratosismight be related with the site of tumor origin. Herein, we report two interesting cases of inverted follicular keratosis with a peculiar pedunculated feature.

Pedunculated Sclerotic Fibroma Resembling Soft Fibroma / 대한피부과학회지

Sclerotic fibroma is a rare skin neoplasm that can occur seen sporadically or in association with Cowden's disease. Clinically, it presents as asymptomatic flesh-colored or pinkish slow-growing papules or nodules with a wide anatomical distribution. We report a rare case of pedunculated type of sclerotic fibroma resembling soft fibroma, which has not been reported in Korea.