Hamartoma fibrolipomatoso e macrodistrofia lipomatosa: análise dos achados clínicos e de imagem em quatro casos, com revisão da literatura

O hamartoma fibrolipomatoso neural e a macrodistrofia lipomatosa são doenças raras, com achados de imagem característicos. Radiografias simples, estudos de ressonância magnética e prontuários médicos de quatro pacientes foram revisados. Em um paciente, foi realizada cirurgia com confirmação histopat...

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Published in:Radiologia brasileira Vol. 35; no. 5; pp. 287 - 291
Main Authors: Coelho, Rafael Darahem de Souza, Simão, Marcelo Novelino, Trad, Clóvis Simão
Format: Journal Article
Language:Portuguese
Published: Colégio Brasileiro de Radiologia e Diagnóstico por Imagem 01-10-2002
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Abstract O hamartoma fibrolipomatoso neural e a macrodistrofia lipomatosa são doenças raras, com achados de imagem característicos. Radiografias simples, estudos de ressonância magnética e prontuários médicos de quatro pacientes foram revisados. Em um paciente, foi realizada cirurgia com confirmação histopatológica. Em três pacientes, os achados clínicos e de imagem foram considerados suficientes para o diagnóstico. Descrevemos dois casos de macrodistrofia lipomatosa isolada, um caso de hamartoma fibrolipomatoso do nervo mediano e um caso de coexistência das duas condições. As radiografias simples, nos casos de macrodistrofia lipomatosa, mostraram aumento difuso de partes moles e estruturas ósseas, com estrias radiotransparentes entremeadas às fibras musculares. Os dois casos de hamartoma fibrolipomatoso ocorreram no nervo mediano, com achados, à ressonância magnética, de fascículos nervosos espessados com baixo sinal nas imagens ponderadas em T1 e T2, com infiltração homogênea de gordura entre estes, aparecendo com alto sinal em T1 e baixo sinal em T2 com saturação de gordura. O aspecto do nervo aos cortes axiais é de "cabo coaxial". Nota-se extensão para a ramificação dos nervos, aspecto típico desta lesão. As características de imagem da macrodistrofia lipomatosa e do hamartoma fibrolipomatoso neural, principalmente pela ressonância magnética, permitiram o diagnóstico preciso destas condições freqüentemente coexistentes.
AbstractList O hamartoma fibrolipomatoso neural e a macrodistrofia lipomatosa são doenças raras, com achados de imagem característicos. Radiografias simples, estudos de ressonância magnética e prontuários médicos de quatro pacientes foram revisados. Em um paciente, foi realizada cirurgia com confirmação histopatológica. Em três pacientes, os achados clínicos e de imagem foram considerados suficientes para o diagnóstico. Descrevemos dois casos de macrodistrofia lipomatosa isolada, um caso de hamartoma fibrolipomatoso do nervo mediano e um caso de coexistência das duas condições. As radiografias simples, nos casos de macrodistrofia lipomatosa, mostraram aumento difuso de partes moles e estruturas ósseas, com estrias radiotransparentes entremeadas às fibras musculares. Os dois casos de hamartoma fibrolipomatoso ocorreram no nervo mediano, com achados, à ressonância magnética, de fascículos nervosos espessados com baixo sinal nas imagens ponderadas em T1 e T2, com infiltração homogênea de gordura entre estes, aparecendo com alto sinal em T1 e baixo sinal em T2 com saturação de gordura. O aspecto do nervo aos cortes axiais é de "cabo coaxial". Nota-se extensão para a ramificação dos nervos, aspecto típico desta lesão. As características de imagem da macrodistrofia lipomatosa e do hamartoma fibrolipomatoso neural, principalmente pela ressonância magnética, permitiram o diagnóstico preciso destas condições freqüentemente coexistentes.
Author Trad, Clóvis Simão
Coelho, Rafael Darahem de Souza
Simão, Marcelo Novelino
AuthorAffiliation Universidade de São Paulo
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  givenname: Marcelo Novelino
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  givenname: Clóvis Simão
  surname: Trad
  fullname: Trad, Clóvis Simão
  organization: Universidade de São Paulo
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DocumentTitleAlternate Fibrolipomatous hamartoma and macrodystrophia lipomatosa: imaging and clinical data analysis of four cases and review of the literature
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Issue 5
Keywords Fibrolipomatous hamartoma
Nervo mediano
Hamartoma fibrolipomatoso
Magnetic resonance imaging
Macrodystrophia lipomatosa
Doença de nervos periféricos
Median nerve
Macrodistrofia lipomatosa
Peripheral nerve disease
Ressonância magnética
Language Portuguese
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Title Hamartoma fibrolipomatoso e macrodistrofia lipomatosa: análise dos achados clínicos e de imagem em quatro casos, com revisão da literatura
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