Primary Langerhans cell histiocytosis (LCH) of the female genital tract is very uncommon. Since the natural history of this tumor is unpredictable, with spontaneous remissions and exacerbations, establishment of the diagnosis is often difficult. In the few reported cases of LCH involving the vulva there were systemic manifestations of the disease. We report the clinical and histopathological fi...

indeterminate cell histiocytosis is a very rare disorder of histiocytes proliferation. it has both langerhans and non-langerhans cell histiocytosis immunophenotypic features. we described a 45-year-old man with a 2 years history of multiple yellow-brown papules and a few red nodules on his trunk and extremities. no internal involvement was detected first and after 8 months. as his lesions were ...

The histiocytoses are a group of proliferative disorders of themonocyte-macrophage lineage that are neoplastic or reactive innature. Based on immunophenotyping and electron microscopy,two main groups have been recognized namely 1) Langerhanscell histiocytosis (LCH) and 2) non- Langerhans cell histiocytosis(non-LCH). In this study, a fairly rare disease of the non-LCHgroup, generalized eruptive ...

CONTEXT Pulmonary Langerhans cell histiocytosis is the most common and best known pulmonary histiocytic lesion; however, the realm of pulmonary histiocytic lesions also includes an assortment of uncommon diseases that may exhibit pulmonary involvement. OBJECTIVE To review pulmonary Langerhans cell histiocytosis and other pulmonary histiocytoses to better ensure correct diagnosis and optimal a...

eosinophilic granuloma,8,9 Hand-Schuller-Christian10-12 and (Abt)-Letterer-Siwe13-15 diseases were not independent diseases. On the contrary, he felt that they shared pathogenesis and enough clinical aspects to be encompassed under the term histiocytosis X.16 This was a breakthrough and the first step towards understanding that LCH is a unique nosologic entity with heterogeneous clinical manife...

Isolated hypogonadotropic hypogonadism is characterized by impaired gonadotropin release in the context of normal anatomical and functional anterior pituitary function. The conditions usually responsible for hypogonadotropic hypogonadism are: pituitary adenoma, neoplastic metastasis, granulomatous processes, lymphocitary hypophysitis, histiocytosis X, hemochromatosis, vascular pathologies. We p...

Using the peroxidase antiperoxidase (PAP) method, lysozyme (LZM) was shown to exist in normal, reactive and neoplastic cells belonging to the mononuclear phagocyte system (MPS), but was not detected in histiocytosis X cells. Immunostaining for cytoplasmic LZM by the PAP method is useful for identification of mononuclear phagocytes and for diagnosis of the diseases in which these cells participate.