Langerhans cell histiocytosis in twins: bibliographical review and clinical case

Langerhans cell histiocytosis (LCH) is the most common histiocytic disorder in children and is characterized by clonal expansion of myeloid precursors. The pathological cells are morphologically and phenotypically similar to Langerhans cells. LCH is considered as a sporadic disease as yet with undescribed hereditary factors for its development. However, hereditary predisposition to the development of this pathology cannot be excluded. There are cases of the LCH development in twins described, both in monozygotic and dizygotic. Article represents bibliographical review on the familial forms of Langerhans cell histiocytosis and clinical case of the Langerhans cell histiocytosis development in twin girls.