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2003, Number 1

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Anales de Radiología México 2003; 2 (1)

Lesiones del ángulo pontocerebeloso, estudio descriptivo de 20 pacientes y revisión de la literatura

Granados-Sandoval E, Roldan-Valadez E, Sandoval-González C, Osorio-Peralta S, Rodríguez-Blas A, Casian G

Language: Spanish
References: 25
Page: 35-40
PDF size: 757.66 Kb.


ABSTRACT

Introduction: Lesions of the cerebellopontine angle are rare in children but frequent in the adult population, in whom most of the tumor are benign and extraaxial. Not having found report about the frequency of these lesion in Mexican patients, the aim of the study was to know the frequency, size and age of presentation of this type of lesion in a 3rd level hospital, using CT and MR as diagnostic tools. Methods: This was a retrospective study of 20 patients with clinical evidence of a lesion of the cerebellopontine angle, diagnosed with TC and non ionic media contrast, and MR using sequences pondered in T1, T2, with gradient echo, gadolinium-DTPA; axial, sagittal and coronal slices were used. Results: the meningioma was the most frequent lesion (40%), glomus and acoustic neurinoma (15%), and schwannomas and chordomas the 3rd most frequent with 10%. Discussion: Schwannomas have previously been reported as the most frequent and biggest lesions; in this study those places were occupied by the meningioma (40%) and glomus respectively. MR in T2 was more helpful than T1 to differentiate lesions of the cerebellopontine angle, inner ear and cranial nerves.


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