A Case of Intravascular Papillary Endothelial Hyperplasia on the Lip / 대한피부과학회지

Intravascular papillary endothelial hyperplasia(IPEH) is a solitary slowly enlarging, often tender, blue to red elevated nodule. The predilection sites include the head and neck region, and the extremities, especially the fingers. Histologically, IPEH is characterized by the well-circumscribed intravascular papillary structures, which are formed by fibrous cores that are lined by endothelial cells. We report a case of intravascular papillary endothelial hyperplasia developed on the unusual site of lip.

The Study of Applying Method and Time for Improving Treatment Result in Cryosurgery: Theory of Selective Cryolysis / 대한피부과학회지

BACKGROUND: Cryosurgery uses freezing temperatures to achieve specific effects on tissues, and this method has been used to treat various skin diseases for the last five decades. The modern cryosurgery is especially effective on the treatment of benign, premalignant and malignant lesions including keloid, hypertrophic scar and pigmented disease such as Ota nevus. The results of cryosurgery depend on such factors as types of cryogen, freezing and thawing time, and numbers of the freezing-thawing cycle. OBJECTIVE: The purpose of this study is to show differences among groups of disease, sites of treatment and applying methods through comparing freezing and thawing time. And specifying the optimum applying methods for the treatment of each specific disease is studied. METHOD: To attain the goal of the study, operation records of 224 patients, who received cryosurgical treatment at the Ewha Woman's University Dongdaemoon Hospital, have been analyzed. RESULTS: 1. The numbers of male and female patients of selected group were 74 and 150, respectively, and their ages between 2 and 54 years. Among the group, 42 patients had epidermal pigmentary disease, 77 had dermal pigmentary disease and 105 had scars. 2. Ratios of TT(thawing time) to FT(freezing time) were significantly different among groups of disease(p<0.05). 3. Ratios of TT to FT were significantly different among groups of treatment site(p<0.05). 4. Ratios of TT to FT showed great difference between the group of rolling method applied and one of pressure method applied(p<0.05). CONCLUSION: The output of this study indicates that the result of the cryosurgery tends to be heavily influenced by the surgical method that is employed. It also proves that the pressure method tends to inflict more severe cryoinjury on the tissues than the rolling method. Each different tissue shows different sensitivity to the cold injury, and the longer the thawing time is, the more cryoinjury of tissues occurs. Therefore, to achieve the maximum therapeutic result while minimizing the undesired effect, adequate surgical method should be selected and applied to each specific disease. This concept is introduced in this study as "Theory of Selective Cryolysis.".

A Case of Sinusoidal Hemangioma / 대한피부과학회지

Sinusoidal hemangioma is a rare variant of cavernous hemangioma. Clinically, it develops in adults and predominantly in females, and presents as a solitary painless subcutaneous nodule. Histological finding of the sinusoidal hemangioma shows a well-circumscribed lobular architecture in the subcutaneous tissue. The lobulated mass is composed of dilated sinusoidal thin-walled vascular channels, which have a pseudopapillary pattern and back-to-back arrangement without much intervening stroma. We report a case of sinusoidal hemangioma which can be differentiated from the other vascular tumors and has never been reported in Korea.

A Case of Tufted Angioma Developing After Electrocautery / 대한피부과학회지

Tufted angioma is a benign, slowly progressive angioma with typical histologic findings of small, circumscribed angiomatous tufts and lobules scattered in the dermis. More than 50% of cases occur during the first year of life, but rarely it develops late in life. There was only one reported case of tufted angioma after trauma in the English literature. We report a case of tufted angioma, which developed after electrocautery in a 61-year-old woman showing histologic features of typical tufted angioma.

A Case of Cutaneous Bronchogenic Cyst with Lymphoid Follicles / 대한피부과학회지

We report a case of cutaneous bronchogenic cyst accompanied by many lymphoid follicles histopathologically. A 6-year-old boy had an erythematous macule with a pinpoint-sized opening intermittently draining mucinous material on the anterior chest. Histopathologic findings showed an irregularly folded cystic structure extending from the deep dermis to subcutis. It was lined by ciliated pseudostratified columnar epithelium interspersed with PAS-positive goblet cells. Groups of submucosal glands, a strand of smooth muscle, and, interestingly several lymphoid follicles consisting of many mononuclear cells were also seen.

A Case of Allergic Contact Dermatitis due to Lanolin / 대한피부과학회지

Lanolin is a complex material consisting of a mixture of numerous esters and polyesters of high-moleculer-weight alcohols and fatty acids, Lanolin allergy is important because lanolin is widely used as an emulsifier in topical medicaments and in numerous cosmetic preparations. We report a case of allergic contact dermatitis in a 27-year-old female. An erythematous pruritic rash develgood around the eyelid developed after applying a new eye cream and was aggravated after applying Cambison ophthalmic ointment. Patch testing showed positive reactions to Cambison ophthalmic ointment, 30% wool alcohol, Amerchol L101 and Nivea cream. A use test with 100% Cambison ophthalmic ointment base was positive