Abstract
Magnetic resonance images of 47 patients with postoperative maxillary cyst were analyzed for size, location, and signal intensity. The smallest cyst was confirmed at surgery to be 1cm×1cm×1cm and the largest 5cm×5cm×5cm.The cysts were usually found in the superomedial and inferomedial parts of the maxillary sinus (44%). Many patients (60%) had multiple cysts or bilateral cysts (30%).In most the signal intensiy was low in the T1-weighted SE (500/40) images and high in the T2-weighted SE (2000/80) images.Cysts with a hemorrhagic component, though rare, showed high signal intensity in both T1-and T2-weighted images.
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