No abstract available.
Keloid* ; Recurrence*

A 48-year-old male patient had white to ivory colored patches on brown colored bases over the right side of his back for 8 years without accompanying pruritus or pain. Six months prior to the onset of his skin eruption, he received acupuncture for the relief of right sided back pain for 1 month. Histopathologic examination of the white patches showed follicular plugging, epidermal atrophy, focal hydropic degeneration of basal cells, lymphedema of papillary dermis, thickened homogenization of collagen fibers; consistent with findings previously reported in lichen sclerosus et atrophicus. We report this case to document the occurence in an acupuncture site and stress the unusual clinical manifestation of a zosteriform distribution.
Acupuncture ; Atrophy ; Back Pain ; Collagen ; Dermis ; Humans ; Lichen Sclerosus et Atrophicus* ; Lichens* ; Lymphedema ; Male ; Middle Aged ; Pruritus ; Skin

Epithelioid hemangiomo, is belong to a group of unusual vascular proliferation accompanying prominent eosinophilic infiltration. It is usually classificed as a subset of angiolymphoid hyperplasia with eosinophilia despite of its peculiar endothelial morphology(i.e., vacuolization and hobnail appearance etc.). Histopathologically, the lesion was characterized by exuberant. proliferation of capillaries, epithelioid-appearing erdothelial cell, endothelial cytoplasmic vacuolization, solid sheets of endothelial cells, massive eosinophilic infiltration and lymphoreticular hyperplasia. The lesions are most common in he head-neck region and are characterized by single or multiple smooth-top papules or plnqu s of varying colors. We report two cases of epithelioid hemangioma occurring on the left auricle and scalp. The chiet complaints were pruritus and they have been early bleeding even in trivial trauma. Microscopically, the lesions were consisted of a prolifration of small to medium-sized blood vessels surraunded by inflammatory infiltrates predominantly composed of lymphocytes, histiocytes and eosinophils. The vessels were lined by epithelioid-appearing endothelial cells haveing enlarged round nuclei and abundant easinophilic or clear cytoplasm. Some vessels showed luminal obliteration by proliferating epithelioid endothelial cells. Occasionally, blood vessels were lined by hobnailor scallop-shaped endothelial cells. In immunohistochemical finolings, the epithelioid endothelial cells or proliferated capillaries were immunoreactive to factor VII-related antigen and negative to lysozyme.
Angiolymphoid Hyperplasia with Eosinophilia ; Blood Vessels ; Capillaries ; Cytoplasm ; Endothelial Cells ; Eosinophils ; Hemangioma* ; Hemorrhage ; Histiocytes ; Hyperplasia ; Lymphocytes ; Muramidase ; Phenobarbital ; Pruritus ; Scalp

Malignant histiocytosis(MH) is a rapidly progressive and usally fatal disorder characterized clinically fever, generalized weakness, lymphadeno athy, hepatosplenomegaly accompanied by jaundice, and purpura. The frequency of skin manifestations has been repoterd about 15% of MH patients. Papules, plaques and niidules are commonly met. Histopathologically MH shows infiltrations of atypical histiocyte; with uarious maturity in many organs including skin. We present a case of a 32-year-old female with MH involving not only lymph node, liver, spleen and bone marrow but also skin with vaorious features ; erythematous papules, annular purpuric patches, subcutaneous nodules and hemomagic nodules. Immunohist,ochemically the majority of patients atypical histiocytes in lesional skin shows a-1 antitrysin positive, but lysozyme negative. It may suggest that these are poorly differentiated atypical histiocytes rather than well differentiated ones.
Adult ; Bone Marrow ; Female ; Fever ; Histiocytes ; Histiocytic Sarcoma* ; Humans ; Jaundice ; Liver ; Lymph Nodes ; Muramidase ; Purpura ; Skin Manifestations* ; Skin* ; Spleen

No abstract available.
Down Syndrome* ; Humans ; Infant* ; Leukemia, Megakaryoblastic, Acute*

The objective of this study was to characterize the mechanical properties of Y2O3-containing glass infiltrated ceramic core material, which was made by pressureless powder packing method. A pure alumina powder with a grain size of about 4micrometer was packed without pressure is silicon mold to form a bar shaped sample, and applied PVA solution as a binder. Samples were sinterd at 1350degrees C for 1 hour. After cooling, Y2O3-containing glass (SiO2, Y2O3, B2O3, Al2O3, ect) was infiltrated to the sinterd samples at 1300degrees C for 2 hours and cooled. Six different proportions Y2O3 of were used to know the effect of the mismatch of the thermal expansion coefficient between alumina powder and glass. The samples were ground to 3x3x30 mm size and polished with 1microneter diamond paste. Flexural strength, fracture toughness, hardness and other physical properties were obtained, and the fractured surface was examined with SEM and EPMA. Ten samples of each group were tested and compared with In-Ceram(TM) core materials of same size made in dental laboratory. The results were as follows : 1. The flexural strengths of group 1 and 3 were significantly not different with that of In-Ceram, but other experimental groups were lower than In-Ceram. 2. The shrinkage rate of samples was 0.42% after first firing, and 0.45% after glass infiltration. Total shrinkage rate was 0.87%. 3. After first firing, porosity rate of experimental groups was 50%, compared with 22.25% of In-Ceram. After glass infiltration, porosity rate of experimental groups was 2%, and 1% in In-Ceram. 4. There was no statistical difference in hardness between two materials tested, but in fracture toughness, group 2 and 3 were higher than In-Ceram. 5. The thermal expansion coefficients of experimental groups were varied to 4.51~5.35x10-6/degrees C according to glass composition, also the flexural strengths of samples were varied. 6. In a view of SEM, many microparticles about 0.5microneter diameter and 4microneter diameter were observed in In-Ceram. But in experimental group, the size of most particles was about 4microneter, and a little microparticles was observed. The results obtained in this study showed that the mismatch of the thermal expansion coefficients between alumina powder and infiltrated glass affect the flexural strength of alumin/glass composite. The Y2O3-containing glass infiltrated ceramic core made by powder packing method will takes less time and cost with sufficient flexural strength similar to all ceramic crown made with slip casting technique.
Aluminum Oxide* ; Ceramics ; Edible Grain ; Crowns ; Diamond ; Fires ; Fungi ; Glass* ; Hardness ; Laboratories, Dental ; Porosity ; Silicones

Eccrine nevus is an unusual entity with various clinical manifestations. Histologically the eccrine apparatus appears simply increased in number and/or size, but structurally normal. We present a case of eccrine nevus on the dorsum of the left 3rd and 4th fingers in a 20 year-old female. The lesions were 3 × 2cm sized, well demarcated, smooth surfaced, brownish plaques with mild hyperhidrosis. Histological examination revealed hyperkeratosis in the stratum corneum and hyperpigmentation of basal layer, and an increased number of eccrine sweat glands and many eccrine coils in the dermis was seen.
Dermis ; Female ; Fingers ; Humans ; Hyperhidrosis ; Hyperpigmentation ; Nevus* ; Sweat Glands

We report a case of Hunter' s syndrome with characteristic nodules on the upper back. The patient was a 7-year-old Korean boy who presented with ivory-colored papules and nodules on both sides of the scapula, pectoral regions and lateral aspects of the upper arms. These lesione are regarded as pathognomonic cutaneous markers for Hunter s syndrome. He also presented with truncal hypertrichosis, retarded growth, short neck, round face, claw like contractures of hands, multiple joint contractures, and a clear cornea. Severely elevated glycosaminoglycan levels were present in the patient s urine samples. The patient s 5-year-old brother had similar clinical features.
Animals ; Arm ; Child ; Child, Preschool ; Contracture ; Cornea ; Hand ; Hoof and Claw ; Humans ; Hypertrichosis ; Joints ; Male ; Mucopolysaccharidosis II* ; Neck ; Scapula ; Siblings

This is a case report on the plastic repair of the transected penis using a gracilis muscle flap with overlying full thickness skin graft and split thickness skin graft for protruding the isolated penis and the reconstruction of an extensively traumatized soft tissue defect of perineum and upper inner thigh using tensor fascia lata myocutaneous flap which have complete circulation and innervation.
Fascia Lata* ; Fascia* ; Male ; Myocutaneous Flap* ; Penis* ; Perineum ; Plastics ; Skin ; Thigh ; Transplants

We report a case of focal dermal hypoplasia associated with ichthyosis in an 18-year-old Korean female. The patient showed a yellowish atrophic patch on the left side of her abdomen, abnormal skin pigmentation, nail dystrophy and ichthyosis since birth.We could also find skeletal and dental deformities. The biopsy specimen obtained from the yellowish atrophic patch showed marked attenuation of collagen fibers and ectopic fatty tissue nearly reaching up to the upper dermis.
Abdomen ; Adipose Tissue ; Adolescent ; Biopsy ; Collagen ; Congenital Abnormalities ; Dermis ; Female ; Focal Dermal Hypoplasia* ; Humans ; Ichthyosis* ; Skin Pigmentation