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Myxopapillary ependymoma of the ischioanal fossa

¹ Sezione Scientifica di Diagnostica per immagini, Radioterapia e Medicina Nucleare, ² Dipartimento di Chirurgia Generale ed Endoscopica and ³ Università degli Studi "Federico II" di Napoli, Dipartimento di Scienze Biomorfologiche e Funzionali, Istituto di Anatomia Patologica

View larger version (137K): [in a new window]   Figure 1. Sagittal MR T1 weighted image. Evidence of irregularly lobulated mass located in the right ischioanal fossa. The mass (arrows) shows hypo-isointense signal intensity.

View larger version (90K): [in a new window]   Figure 2. Axial MR T2 weighted image. The lesion (arrows) shows inhomogeneously high signal intensity, with surrounding band of low signal intensity.

View larger version (93K): [in a new window]   Figure 3. Axial MR T1 weighted image after intravenous administration of contrast medium. Evidence of contrast enhancement in central region of the lesion with peripheral rim of unenhancing tissue.