from Section IV - Precursor Hematopoietic Neoplasms and Related Neoplasms
Published online by Cambridge University Press: 25 November 2023
Mastocytosis is defined as a clonal proliferation of neoplastic mast cells in one or more organ systems. It is broadly separated into two categories of cutaneous mastocytosis and systemic mastocytosis, of which the latter can include cutaneous involvement. In the 2016 World Health Organization (WHO) Classification of Tumours of Haematopoietic and Lymphoid Tissues, mastocytosis was separated into its own category due to its heterogeneous clinical manifestations ranging from spontaneously resolving skin lesions in pediatric cutaneous mastocytosis to highly aggressive malignancies such as mast cell leukemia with short survival and multiorgan involvement [1, 2].
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