Pigmented eccrine poroma with squamous differentiation / 대한피부과학회지

Eccrine poroma is a common adnexal neoplasm that differentiated toward the acrosyringium, the intraepidermal portion of the eccrine sweat duct. This disease appear clinically as skin-colored or brownish nodule, but the lesion can be pigmented when it contains melanocytes and melanin. In that case, it can be very similar to melanoma. Futhermore, eccrine poroma rarely shows squamous differentiation histologically. Nevertheless, it should be differentiaed from basalcell carcinoma and seborrheic keratosis when it shows squamous differentiation. We report a case of pigmented eccrine poroma with squamous differentiation in a 42-year-old male.

A Case of Type V Hyperlipoproteinemia with Xanthoma Eruptivum / 대한피부과학회지

We report a case of type V hyperlipoproteinemia with xanthoma eruptivum in a 30-year-old male. He had diffuse erythematous yellowish papules on both extremities and the buttock. The laboratory findings showed the increased cholesterol and the triglyceride. Serum electrophoresis showed an increase in pre-beta and chylomicron, suggesting type V hyperlipoproteinemia. The biopsy specimen of an erythematous yellowish colored papule on the right knee showed many aggregates of foam cells without Touton giant cells.

A Case of Dermatomyofibroma / 대한피부과학회지

Dermatomyofibroma is a recently described, benign acquired plaque-like cutaneous proliferation of fibroblast and myofibroblast. Clinically, it is located in or around the shoulder and measures from 1 to 2 cm in greatest diameter. Histologically, these are non-encapsulated but well-circumscribed, plaque-like lesions located in the reticular dermis, and composed of fascicles of monomorphic myofibroblasts, oriented parallel to the skin surface. We report a 25-year-old man with a 1.5X1.5 cm sized skin colored plaque-like mass on his left shoulder and showed the histologic finding of dermatomyofibroma.

A Case of Primary Cutaneous Adenoid Cystic Carcinoma / 대한피부과학회지

We report a case of primary cutaneous adenoid cystic carcinoma in a 39-year-old male patient. It was a slightly erythematous hard nodule on left chin and composed of cribriform and tubular masses of basaloid cells. Lumina formed by neoplastic cells contained mucin and hyalin, and similar constituents were located between neoplastic cell masses and adjacent dermis. Immunohistochemically, the neoplastic cells stained only focally with S-100 protein and negative with carcinoembryonic antigen(CEA). Therapy should employ wide surgical excision that extends well beyond the clinical confines of the neoplasm.

Angiokeratoma Circumscriptum with Transepidermal Elimination / 대한피부과학회지

Transepidermal elimination is a mechanism whereby foreign or altered constituents can be removed from the dermis. The phenomenon of transepidermal elimination may occur as a primary process characterizing disorders such as elastosis perforans serpiginosa, reactive perforating collagenosis and chondrodermatitis nodularis chronica helicis; as well as a secondary process characterizing disorders such as granuloma annulare, necrobiosis lipoidica diabeticorum, calcinosis cutis, pseudoxanthoma elasticum, spitz nevi, pimented nevi, porokeratosis plantaris discreta and metastatic tumors. A 17-year-old man presented with a 2X2 cm sized well-circumscribed slightly erythematous plaque with some black colored papules on the left dorsum of his hand. The histopathology of the lesion indicated angiokeratoma circumscriptum with transepidermal elimination.

A Case of Tinea Versicolor of the Scalp and Face in Infancy / 대한의진균학회지

Tinea versicolor is a superficial mycosis caused by Malassezia furfur. Tinea versicolor in infancy is rare and the distribution of the lesions differ from that of adult. The predilection sites for tinea versicolor are the chest and back in adults, whereas the face and scalp are commonly involved in childhood tinea versicolor. We report a case of tinea versicolor in a 5-month-old male infant. He had fine scaly whitish macules on the scalp, face and posterior neck. The lesions were successfully treated with topical ketoconazole for 3 weeks.