A Case of Becker's Nevus Associated with Smooth Muscle Hamartoma / 대한피부과학회지

We report a case of Becker's nevus associated with smooth muscle hamartoma, in a 21-year-old male patient, which shows clinically match-head sized, flat topped, round to oval, grouped papules with hairs on the outer surface of the right arm, and microscopically reveals numerous bundles of smooth muscle fiber in the dermis.

A Case of Sebaceous Epithelioma Associated with a Nevus Sebaceus of Jadassohn / 대한피부과학회지

We observed a case of sebaceous epithelioma associated with a nevus sebaceus in a 25-year-old male. The tumor was bean-sized, dome-shaped nodule on the slightly yellowish plaque of nevus sebaceus. Histopathological finding shows undifferentiated cells which are arranged in a palisade fashion at the periphery of a cell mass and a fairly large number of transitional cells and groups of mature sebaeeous cells.

A Case of Congenital Smooth Muscle Hamartoma / 대한피부과학회지

Congenital smooth musele hamartomas appear at birth as hypertrichotic patches or plaques with or without hyperpigmentation. Histologic characteristic is hyperplasia of dermal smooth muscle bundles. We report a case of congenital smooth muscle harnartoma in 5-year-old female, who showed localized excessive-hairy, skin-colored patch on the lateral surface of left. elbow, which were found at birth. Biopsy specimen showed hyperpigmentation of the basal layers of epidermis, melanophages in upper dermis, and hyperplasia of smooth muscle bundles in lower dermis.

Provocation Test of Non-Immunologic Contact Urticaria / 대한피부과학회지

This study was undertaken to investigate to compare the ratio of positive reactions to benzoic acid(BA), sorbic acid(SA) and cinnamic acid(CA) which are well known materials producing non-immunologic contact urticaria. Various concentrations(0.l% to 5%) and different vehicles(petrolatum, water, hydrophilic ointment base) were used in open and 20 minutes closed test using Finn chamber on Scanpor tape. One hundred total subjects were consisted of nonallergic patients and normal persons. The results were as follows ; 1. Total numbers of positive reactions were 69 in closed test(CT) and 60 in open test(OT), regardless of the materials and vehicles. 2. Total riumbers of positive reactions in BA, SA and CA were 68, 31, 35 in CT and 59, 20, 14 in OT respectably. 3. CT showed much more positive reactions than OT with all materials tested except 0.l% SA in water. 4. Hydrophilic ointment base showed a better reactivity than any other vehicles in CT. But in OT, petrolatum, water, hydrophilic ointment base showed better reactivity in BA, SA, CA respectably. 5. Almost all the reactions appeared within 45 minutes and disappeared within 3 hours. Erythema preceded edema and persisted 30 minutes to 1 hour after dissappearance of edema. 6 Itching, burning and tingling sensation were the only symptoms observed except. localized erythema and edema.