Three cases of primary irritant dermatitis due to paraquat(gramoxone) / 대한피부과학회지

Paraquat(Gramoxone) is the most commonly used herbicide in Korea. But serious paraquat poisoning in human beings has occurred following ingestion or exposure to the skin. Exposure to paraquat through the skin has resulted in local irritation or inflammation of varyiig degree, sometimes severe. We report three cases of primary irritant dermatitis due to paraquat. Two patients developed generalized vesicobullae and necrotirulcer in the scrotum, respectively. The other patient developed painful whitish patch and erosion in ttie tongue after accidental exposure.

A Case of Ewing' s Sarcoma Arising in the Distal Phalanx / 대한피부과학회지

Ewing's sarcoma is a highly malignant, small, round cell tumor that usually affects long bones. The acral part of the extremities is a very rare primary site for this neo plasm. A fifteen-year-old girl was seen for a lobulated, dome-shaped, 2.7cm diameter, denuded mass on the distal phalanx of the right middle finger which had increased in size over a 14-month period. The radiological featuies of the hand showed a cortical brick of distal phalanx and surrounding soft tissue mass. Histologically, the biopsy specimen showed sheets of small round to oval cells with scanty cytoplasm, that were closely packed and separated into lobules by trands of fibrous tissue. A periodic acid-Schiff stain demonsirated glycogen in the cytoplasm of the tumor cells. Electron microscopy showed large aggregates of glycogen in the cytoplasm of the neoaplastic cells. Immunohistochemical stains revealed positive staining for vimentin, glial fibrillary acid potein, and neuron specific enolase, stains for S-100, Factor VIII, and cytokeratin were negative.

A Case of Ewing' s Sarcoma Arising in the Distal Phalanx / 대한피부과학회지

Ewing's sarcoma is a highly malignant, small, round cell tumor that usually affects long bones. The acral part of the extremities is a very rare primary site for this neo plasm. A fifteen-year-old girl was seen for a lobulated, dome-shaped, 2.7cm diameter, denuded mass on the distal phalanx of the right middle finger which had increased in size over a 14-month period. The radiological featuies of the hand showed a cortical brick of distal phalanx and surrounding soft tissue mass. Histologically, the biopsy specimen showed sheets of small round to oval cells with scanty cytoplasm, that were closely packed and separated into lobules by trands of fibrous tissue. A periodic acid-Schiff stain demonsirated glycogen in the cytoplasm of the tumor cells. Electron microscopy showed large aggregates of glycogen in the cytoplasm of the neoaplastic cells. Immunohistochemical stains revealed positive staining for vimentin, glial fibrillary acid potein, and neuron specific enolase, stains for S-100, Factor VIII, and cytokeratin were negative.

Three cases of primary irritant dermatitis due to buttercup / 대한피부과학회지

The buttercup is an inportant irritant plant which contairs an unsaturated lactone, protoanemonin, formed by the breakdown of a glucoside in injured plants. We report the three cases of irritant contact dermatitis due to buttercup(Ranunculus sceleratus). These patient developed erythematous and edematous patches with tense vesicles or bullae on t,he application site of pounded buttercup for the treatment of diabetes mellitus, arthralgia, and neuralgia, respectively.

A case of focal dermal hypoplasia / 대한피부과학회지

Focal dermal hypoplasia (Goltz syndrome) is a rare genetic mesoectodermal disorder characterized by variable multisystem defects, including anomalies of the skin, skeleton, teeth and eyes. A 22-year-old female patient presented with confluent and disciete, yellowish nodules on the calves, white linear atrophic lesions, hypoand hyper!igmented patches, and telangiectasia scattered over the trunk, neck and extremities. In addition to the skin lesions, this patient showed hypertrophy of the left leg, anomalies of the left foot, fingers and nails, and maloccluded teeth. Histopathological findings of a yellow nodule revealed accumulations of adipose tissue very near to the epidermis that largely replaced the upper dermis.