chronic undermining burrowing ulcer

例句：

1. 1. The patient's condition was complicated by a chronicundermining burrowing ulcer that required immediate medical attention.
   患者的病情复杂，有一处慢性侵蚀性溃疡需要立即医疗关注。
2. 2. The doctor diagnosed the patientwith a chronic undermining burrowing ulcer and prescribed antibioticsto treat it.
   医生诊断出患者患有慢性侵蚀性溃疡，并开了抗生素来治疗它。
3. 3. The patient's diet wascarefully monitored to prevent further complications from thechronic undermining burrowingulcer.
   患者的饮食被仔细监控，以防止由慢性侵蚀性溃疡引起的进一步并发症。