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Vol. 35. Issue 6.
Pages 323-328 (November - December 2024)
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Vol. 35. Issue 6.
Pages 323-328 (November - December 2024)
Case Report
Giant solitary fibrous tumor of the olfactory groove. An unusual simulator in an unusual location
Tumor fibroso solitario gigante del surco olfatorio. Un simulador inusual en una localización inusual
Fernando García Péreza,
Corresponding author
fegaperez@hotmail.com

Corresponding author.
, Ascensión Contreras Jiméneza, Beatriz Agredano Ávilab, José Masegosa Gonzáleza
a Servicio de Neurocirugía, Hospital Universitario Torrecárdenas, Almería, Spain
b Servicio de Anatomía Patológica, Hospital Universitario Torrecárdenas, Almería, Spain
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Abstract

Solitary fibrous tumors are rare mesenchymal neoplasms that can develop in any part of the body, with those that settle intracranially being confused with meningiomas as a general rule. We present the case of a 57-year-old man referred to our hospital due to bifrontal headache, anosmia, and behavioral alterations of 6 months' duration. Radiological studies revealed the existence of a large tumor mass with an extra-axial appearance and location in the anterior cranial fossa, initially compatible with a giant meningioma of the olfactory groove. Gross total resection of the mass was carried out. The pathological diagnosis was unexpected: a solitary fibrous tumor (WHO grade 1, 2021). Given the aggressive nature of these lesions, with a tendency to recurrence, malignant transformation and even metastasis, surgery with macroscopically complete resection intention should constitute the first therapeutic option. Close clinical-radiological follow-up after the procedure is justified.

Keywords:
Giant solitary fibrous tumor
Olfactory groove
Bifrontal transbasal approach
Abbreviations:
MRI
CT
SFT
ISFT
ISFTsb
Resumen

Los tumores fibrosos solitarios son neoplasias mesenquimales infrecuentes que pueden desarrollarse en cualquier parte del organismo, siendo aquellos que se asientan intracranealmente confundidos con meningiomas por norma general. Presentamos el caso de un varón de 57 años remitido a nuestro centro presentando cuadro de cefalea bifrontal, anosmia y alteración del comportamiento de 6 meses de evolución. Los estudios radiológicos revelaron la existencia de una gran masa tumoral de apariencia extra-axial y localización en fosa craneal anterior, inicialmente compatible con un meningioma gigante del surco olfatorio. Se llevó a cabo la resección quirúrgica radical de la lesión. El diagnóstico anatomopatológico resultó inesperado: un tumor fibroso solitario (grado 1 de la OMS, 2021). Dada la naturaleza agresiva de estas lesiones, con tendencia a la recidiva, transformación maligna e incluso metastatización, la cirugía con intención resectiva macroscópicamente completa debe constituir la primera opción terapeútica. El seguimiento clínico-radiológico estrecho tras el procedimiento está justificado.

Palabras clave:
Tumor fibroso solitario gigante
Surco olfatorio
Abordaje bifrontal transbasal

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