 aidstoxo10a.jpg , Noncontrast CT scan shows ill-defined and subtle area of hypoattenuation of left brachium pontis adjacent to fourth ventricle. |
 aidstoxo10b.jpg Contrast CT scan shows intense ring-enhancement of mass. Several other lesions were also noted throughout the brain (not shown). |
 aidstoxo10c.jpg Axial autopsy specimen shows well-circumscribed mass with dark ring surrounding a yellowish center in the left brachium pontis. |