蝶鞍内的边界清楚的肿块为垂体腺瘤。
The circumscribed mass lesion present here in the sella turcica is a pituitary adenoma.
腮腺内的面神经鞘瘤同样是边界清楚的肿块，明显强化，T1和T2序列信号类似。
Intraparotid facial nerve schwannomas are also well-circumscribed masses that show iodinated contrast, gadolinium enhancement, and similar T1 - and T2-weighted intensities.
食管下段显示有边界清楚的溃疡，与左边正常的苍白色食管黏膜相比较，溃疡基底部呈红褐色。
The lower esophagus here shows sharply demarcated ulcerations that have a brown-red base, contrasted with the normal pale white esophageal mucosa at the far left.
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