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Inicio Revista Española de Medicina Nuclear e Imagen Molecular (English Edition) Inflammatory pseudotumour of the infratemporal fossa visualized with 18F-FDG PET...
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Vol. 36. Issue 6.
Pages 392-395 (November - December 2017)
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Vol. 36. Issue 6.
Pages 392-395 (November - December 2017)
Clinical note
DOI: 10.1016/j.remnie.2017.09.008
Inflammatory pseudotumour of the infratemporal fossa visualized with 18F-FDG PET/CT
Pseudotumor inflamatorio de fosa infratemporal, visualizado en una exploración PET/TC con 18F-FDG
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A. Cabrera Villegasa,
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acvillegas@riojasalud.es

Corresponding author.
, B. González Juezb, J.L. Llorente Pendásc, M.C. Albornoz Almadaa, P. Santos Holguerasa, I.E. Sanchez Rodrigueza
a Servicio de Medicina Nuclear, Hospital San Pedro, Logroño, Spain
b Servicio de Otorrinolaringología, Hospital Fundación Calahorra, La Rioja, Spain
c Servicio de Otorrinolaringología, Hospital Universitario Central de Asturias, Oviedo, Spain
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Table 1. Differential diagnosis of a mass in the parapharyngeal space.
Abstract

The inflammatory pseudotumour of the head and neck is a benign lesion, extremely rare outside the cranial orbits. A case is presented of an inflammatory pseudotumour not associated with the IgG4-related disease. The pseudotumour was found as a solitary mass in the infratemporal fossa of a young woman who complained of otalgia and hearing loss. A clear image of the lesion was obtained using an 18F-fluoro-deoxy-glucose (18F-FDG) PET. After the histopathological diagnosis, and treatment with corticosteroids, a second 18F-FDG PET was performed. The metabolic image had returned to normal, and the previously observed mass disappeared. A brief review is presented of the studies examining this type of lesion.

Keywords:
Inflammatory pseudotumour
Infratemporal fossa
PET/CT
18F-FDG
Resumen

El pseudotumor inflamatorio de cabeza y cuello es una entidad de naturaleza benigna y extremadamente infrecuente fuera de la localización orbitaria. Presentamos un caso de un pseudotumor inflamatorio no asociado a enfermedad relacionada con IgG4, localizado como una masa solitaria en la fosa infratemporal de una mujer joven que consultó por otalgia e hipoacusia. La imagen era evidente en una exploración PET con 18F-FDG. Una vez diagnosticado anatomopatológicamente y finalizado el tratamiento con corticoides, se realizó otra exploración PET con 18F-FDG en la que se normalizó la imagen metabólica y desapareció la masa. Se revisa la literatura sobre este tipo de lesiones.

Palabras clave:
Pseudotumor inflamatorio
Fosa infratemporal
PET/TC
18F-FDG

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