title: Benign lipoblastomatosis: ultrastructure and histogenesis.
abstract: Ultrastructural study of a case of benign lipoblastomatosis revealed a cellular spectrum which included undifferentiated mesenchymal cells, stellate myxoid cells, fibroblasts, lipoblasts, lipocytes and many intermediate forms. The uni- and multivacuolated fat cells contained membrane and non-membrane bound cytoplasmic vacuoles, predominatly of saturated lipid. Their cytoplasm also contained simple-structured mitochondria devoid of intramatrical or crystalloid bodies. The fine structure of the cellular components of lipoblastomatosis supports the concept that this is a neoplasm related to fetal white fat rather than to brown fat.
mesh_terms: D000273:Adipose Tissue / Q000648:ultrastructure; D002675:Child, Preschool; D005333:Fetus / Q000648:ultrastructure; D006801:Humans; D008068:Lipomatosis / Q000209:etiology / Q000648:ultrastructure*; D008297:Male; D008854:Microscopy, Electron; D010610:Pharyngeal Neoplasms / Q000209:etiology / Q000648:ultrastructure*; D014617:Vacuoles / Q000648:ultrastructure