Torres W E, Clements J L, Austin G E, Knight K
AJR Am J Roentgenol. 1984 May;142(5):927-30. doi: 10.2214/ajr.142.5.927.
There is a divergence of opinion concerning the cricopharyngeal muscle defect commonly seen in the pharyngoesophageal area on barium esophagram. Some observers believe this defect is the result of neuromuscular dysfunction with the demonstration of the unrelaxed muscle bundle; however, others believe it is the result of actual hypertrophy of the cricopharyngeal muscle. Radiologic and pathologic study of 24 unselected autopsy cases revealed cricopharyngeal hypertrophy in 13 cases by radiologic criteria. Histologic examination revealed that the cricopharyngeal muscle thickness was uniformly greater in these cases than in the radiographically normal cases. The cricopharyngeal muscle defect is associated with actual hypertrophy of the cricopharyngeal muscle in many cases.
对于钡剂食管造影中常见于咽食管区域的环咽肌缺损，存在意见分歧。一些观察者认为这种缺损是神经肌肉功能障碍的结果，表现为肌肉束未松弛；然而，另一些人认为这是环咽肌实际肥大的结果。对24例未经挑选的尸检病例进行的放射学和病理学研究显示，根据放射学标准，13例存在环咽肌肥大。组织学检查显示，这些病例中环咽肌厚度普遍大于放射学表现正常的病例。在许多情况下，环咽肌缺损与环咽肌的实际肥大有关。
