No abstract available.
Humans ; Langerhans Cells* ; Prognosis*

No abstract available.
Animals ; Langerhans Cells* ; Mice ; Mice, Inbred C3H*

No abstract available.
Adenosine Triphosphatases* ; Animals ; Langerhans Cells* ; Mice* ; Oxygen*

No abstract available.
Animals ; Guinea Pigs* ; Guinea* ; Langerhans Cells*

Report. about numeric change of LC between vitiliginous skin(VS) and adjacent normal appering skin (ANAS) are hard to find, Epidermal Langerhans Cell (LC) dersities in VS and ANAS were studied in 18 patient with generalized vitiligo. Adenosine triphosphatase(ATPase) stain was used to characterize LC. Epidermal LC densities were calculated by means of an eye piece reticule and expressed per mm. The results were as follows; 1. The was significant body site variation of LC densities in ANAS and the range of densities of LC per mm were from 668+165 to 1,241 _3 and the mean density of LC per mm was 944+258. 3. The LC densities of VS was similar to that of ANAS(p: not significant). In conclusion quantiative change of epidermal LC in vitiligo doesn't seem to have significant relation with pathogenesis of vitiligo.
Adenosine ; Humans ; Langerhans Cells ; Skin ; Vitiligo*

Langerhans cell histiocytosis (LCH) is a rare disorder characterized by the proliferation of dendritic cells resulting in local or systemic symptoms. The clinical symptoms of patients with Langerhans cell histiocytosis depend on the site and the degree of involvement. This article describes two case histories of unifocal bony Langerhans cell histiocytosis with mandibular involvement and further discusses the appropriate management of such via a review of the literature.
Dendritic Cells ; Histiocytosis, Langerhans-Cell ; Humans ; Mandible

Indeterminate dendritic cell tumor (IDCT) is a dendritic cell tumor that displays histologic features similar to those of Langerhans cells. The origin of the indeterminate cells may represent precursors of Langerhans cells or skin dendritic cells. IDCT is extremely rare, and tumor progression and predictive factors are not well known. Here, we report a case of a 61-year-old man who presented with a papule on his back and was finally diagnosed with IDCT based on histology and immunohistochemistry. The tumor recurred three months after surgical excision.
Dendritic Cells ; Humans ; Immunohistochemistry ; Langerhans Cells ; Middle Aged ; Recurrence ; Skin

Histiocytosis X(Langerhans cell histiocytosis) is a rare prolifertive disorder of Langerhans cells that includes Lettere-Siwe disease, Hand-Shiiller-Christian his ase and eosinophilic granuloma. Since many authors have reported in anintermediate and poarl classified form histiocytosis X has a namenclatural had nosologic problem. We report a case benign cutaneous variant of histiocytisis X. A four-month-old boy had shown multiple skin-colour papules on the trunk, head and nik for one month. Extensive in- vestigations failed to detcct any systemic involvement. The clixron microscopic findings of the skin biopsy specimen were Qefinitely diagnostic for histiocytosi. X Since he did not sbow evidence of internal organ involvernent and any further progression of he skin lesion, no therapy was given. Over the next two months the disease underwent spontane us and complete remission.
Biopsy ; Eosinophilic Granuloma ; Head ; Histiocytosis* ; Histiocytosis, Langerhans-Cell* ; Humans ; Langerhans Cells ; Male ; Remission, Spontaneous* ; Skin

Langerhans cell histiocytosis (LCH) is a rare disease of the monocyte-macrophage system involving clonal proliferation of Langerhans cells. Central nervous system (CNS) involvement of LCH occurs in 10-57% of all LCH cases. This disease is known to present in two ways in the CNS: intracranial tumorous lesions or intracranial nontumorous lesions (neurodegeneration). We report here an LCH patient who developed gait disturbance and dysarthria due to neurodegenerative lesions associated with LCH.
Central Nervous System ; Dysarthria ; Gait ; Histiocytosis, Langerhans-Cell ; Humans ; Langerhans Cells ; Rare Diseases

Langerhans cell histiocytosis is a rare disease in which the Langerhans cells proliferate abnormally, like a cancer, and involve various tissues and organs, such as skin, bone, lung, lymph node, liver and spleen. Especially, in the younger age, it usually involves more organs and tissues, sometimes including the thymus. But isolated involvement of thymus is very rare. We report an 11-month-old-girl with an isolated thymic involvement of Langerhans cell histiocytosis with a brief review of related literatures.
Histiocytosis, Langerhans-Cell* ; Langerhans Cells ; Liver ; Lung ; Lymph Nodes ; Rare Diseases ; Skin ; Spleen ; Thymus Gland