放射治疗后,由于喉粘膜和粘膜下软组织的放射效应,在检查上比未接受治疗病人有更大的限度。残存或复发的癌肿常难以发现,特别是大的粘膜下肿瘤。作者拟证实CT上肿瘤对放疗的放射学反应,并确定可用以诊断肿瘤残存或复发的CT表现。对这些相关变化的了解有助于放射诊断学医师确定高危病人治疗的失败。熟悉局部改变的CT所见有利于避免作出肿瘤复发的错误诊断,导致不必要的活检,造成软骨坏死危险增加和无癌的喉可能丧失功能。 After radiation therapy, the radiologic effects of the laryngeal mucosa and submucosal soft tissue have a greater limit of examination than untreated patients. Residual or recurrent cancers are often difficult to find, especially large submucosal tumors. The authors intend to confirm the radiological response of radiotherapy to tumors on CT and determine the CT appearances that can be used to diagnose residual or recurrent tumors. An understanding of these related changes helps diagnostic radiographers determine the failure of high-risk patients. The familiarity with local changes in CT findings helps prevent erroneous diagnosis of tumor recurrence, leading to unnecessary biopsy, increased risk of cartilage necrosis, and loss of function of the cancer-free throat.