RESUMO
O lipoblastoma é um tumor mesenquimal raro, composto de lipoblastos que continuam sua proliferação após o período pós-natal e que acometem, predominantemente, a população pediátrica. Apresenta prognóstico excelente, apesar do potencial de invasão local e do crescimento rápido. Os autores relatam o caso de uma paciente pediátrica portadora de volumosa lesão em antebraço direito, ocasionando importante comprometimento funcional do membro acometido. Aspectos relevantes no diagnóstico diferencial e manejo são discutidos neste trabalho, visto tratar-se de lesão com potencial risco incapacitante futuro, caso não manejada corretamente.
Lipoblastoma is a rare mesenchymal tumor occurring primarily in pediatric patients and formed by lipoblasts that proliferate after the postnatal period. Despite its potential for local invasion and rapid growth, its prognosis is excellent. In this study, we report the case of a pediatric patient with a ponderous lesion in the right forearm that caused considerable functional impairment of the affected limb. We also discuss the relevant aspects concerning the differential diagnosis and management of the disease, as it has the potential to cause incapacity without proper treatment.
Assuntos
Humanos , Feminino , Lactente , História do Século XXI , Neoplasias de Tecidos Moles , Cirurgia Plástica , Ferimentos e Lesões , Literatura de Revisão como Assunto , Tecido Adiposo , Adipócitos , Estudo de Avaliação , Lipoma , Neoplasias de Tecidos Moles/cirurgia , Neoplasias de Tecidos Moles/patologia , Cirurgia Plástica/métodos , Ferimentos e Lesões/cirurgia , Tecido Adiposo/embriologia , Tecido Adiposo/metabolismo , Adipócitos/fisiologia , Adipócitos/metabolismo , Lipoblastoma , Lipoblastoma/cirurgia , Lipoblastoma/patologia , Lipoma/cirurgia , Lipoma/patologiaRESUMO
A case of lipoblastomatosis occuring in a 1 year and 10 month old boy is described. The tumor was first presented in the left foot at his age of 4 month, and was surgically removed. The tumor was grossly infiltrating skeletal muscle tissue, and was microscopically composed of lobulated fat tissue with prominent myxoid stroma and many immature mesenchymal cells and scattered multivacuolated lipoblasts. The tumor recurred 11/2 years later and was again removed. The tumor was equally lobulated and located inbetween skeletal muscle. However, this time lobulated tumor consisted almost entirely of mature fat tissue with scattered lipoblasts.