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Vol. 35. Issue 3.
Pages 164-168 (May - June 2024)
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Vol. 35. Issue 3.
Pages 164-168 (May - June 2024)
Case Report
Inflammatory pseudotumor, the great mimicker: A case report
Pseudotumor inflamatorio, el gran imitador: a propósito de un caso
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María José Castelló Ruiza,
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mariajosecastelloruiz@gmail.com

Corresponding author.
, Ascensión Contreras Jimeneza, Iñigo Gorrostiaga Altunab, Jose Masegosa Gonzaleza
a Departamento de Neurocirugía, Hospital Torrecárdenas, Almería, Spain
b Departamento de Anatomía Patológica, Hospital Torrecárdenas, Almería, Spain
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Abstract

Inflammatory pseudotumor is a rare lesion, especially at the level of the central nervous system. Its etiology is unknown and the most accepted hypothesis is that it is the consequence of an exaggerated immune response. We present the clinical case of a young Senegalese male, with a history of epilepsy secondary to severe cranioencephalic trauma in childhood, who presented with new epileptic seizures. Imaging tests showed a lesion in the anterior fossa intimately attached to the meninges, so the initial diagnosis was meningioma. A bifrontal craniotomy and microsurgical excision were performed. The definitive anatomopathological analysis concluded that the lesion is an inflammatory pseudotumor whose origin is secondary to a disproportionate reparative process after cranioencephalic trauma.

Keywords:
Pseudotumor
Inflammatory
Immunoglobulin G4
Idiopathic
Myofibroblastic
Abbreviations:
CNS
IP
IMT
TBI
Resumen

El pseudotumor inflamatorio es una lesión poco frecuente, especialmente a nivel del sistema nervioso central. Su etiología es desconocida y la hipótesis más aceptada es que es consecuencia de una respuesta inmunitaria exagerada. Presentamos el caso clínico de un varón joven senegalés, con antecedentes de epilepsia secundaria a traumatismo craneoencefálico severo en la infancia, que presentó nuevas crisis epilépticas. Las pruebas de imagen mostraron una lesión en la fosa anterior íntimamente adherida a las meninges, por lo que el diagnóstico inicial fue de meningioma. Se realizó una craneotomía bifrontal y exéresis microquirúrgica. El análisis anatomopatológico definitivo concluyó que la lesión es un pseudotumor inflamatorio cuyo origen es secundario a un proceso reparativo desproporcionado tras el traumatismo craneoencefálico.

Palabras clave:
Pseudotumor
Inflamatorio
Inmunoglobulina G4
Idiopático
Miofibroblástico

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