Division and proliferation of dendritic cells (DCs) have been proposed to contribute to homeostasis and to prolonged antigen presentation. Whether abnormal proliferation of dendritic cells causes Langerhans cell histiocytosis (LCH) is a highly debated topic. Transgenic expression of simian virus 40 (SV40) T antigens in mature DCs allowed their transformation in vivo while maintaining their phen...

Accepted 29 March 1996 In 1953, Lichtenstein introduced the unifying term 'histiocytosis X' to embrace several previous eponyms, including eosinophilic granuloma, Letterer-Siwe disease and Hand-Schuller-Christian disease.' In 1987, a more prominent designation, Langerhans cell histiocytosis (LCH), was recommended to replace histiocytosis X.' The term is more appropriate as it reflects the fact ...

We present a 73 year old female with intractable pruritus and nonspecific cutaneous rash for a period of 9 months. She had recieved symptomatic therapy with no improvement. A complete examination revealed axillary and abdominal lymphadenopathy. A biopsy confirmed the diagnosis of Hodgkins lymphoma with Langerhans cell histiocytosis. She received 5 cycles of chemotherapy with resolution of pruri...

Self-healing Langerhans cell histiocytosis (SHLCH) is a rare self-limited variant of Langerhans cell histiocytosis that presents at birth or during the neonatal period. It was first described by Hashimoto and Pritzker in 1973. Subsequently, more than 70 cases have been reported in the literature. Regarding age of onset, SHLCH should be divided into congenital SHLCH and rare late-onset type. We ...

A 22-year-old man was referred to our institution due to lower back pain and was diagnosed with Langerhans cell histiocytosis of the thoracic and lumbar spine. The patient achieved complete remission with radiotherapy and chemotherapy. One year later, right cervical lymphadenopathy was observed and Hodgkin's lymphoma was confirmed on biopsy. The patient was treated with chemotherapy and autolog...

Scabies is a common parasitic human infection in infants and children. However, diagnostic pitfalls are frequent in infants, in whom the clinical presentation is usually atypical and different from that in adults. In nodular scabies, lesions may be clinically or histologically misdiagnosed as Langerhans cell histiocytosis, insect bite reaction, non-Langerhans cell histiocytosis, lymphoma, or ur...

Langerhans cell histiocytosis is a rare group of proliferative disorders. Beside cutaneous involvement, other internal organs can be affected. The treatment of cutaneous lesions is difficult and relies on topical corticosteroids, carmustine, nitrogen mustard, and photochemotherapy. Systemic steroids and vinblastine are used for recalcitrant skin lesions. However, some cases fail to respond. An ...

Introduction: Langerhans cell histiocytosis (LCH) refers to a group of rare reticuloendothelial system disorders and it occurs most often in young adults and children. A 57-year-old edentulous female patient who complained of dull pain in the posterior region of the mandible referred to the dental office, with a complaint of dull pain in the posterior region of the mandible. The lesion was diag...

Histiocytic skin disorders are usually classified as either Langerhans' cell histiocytosis (LCH) or non LCH, based on the pathology. Benign cephalic histiocytosis (BCH) is a rare type of non-Langerhans histiocytitic disorder and is characterized by self-healing multiple small eruptions of yellow to red-brown papules on the face and upper trunk. Histologic features of this disorder show dermal p...

conclusions a high index of suspicion is required for the early diagnosis and prompt treatment of patients with osseous tuberculosis. given the high prevalence of tuberculosis in developing countries, tuberculosis should be considered in the differential diagnosis of multifocal lytic lesions and vertebra plana, especially in children. introduction multifocal skeletal tuberculosis is a rare cond...