CAJ | 학술논문

目的：探讨腮腺基底细胞腺瘤的CT表现，尤其是增强特征以及鉴别诊断。方法回顾性分析经病理证实9例腮腺基底细胞腺瘤的CT表现：9例均行CT平扫和增强扫描；观察病灶形态学特征及强化方式，测量肿瘤平扫及双期增强CT值，计算净强化值，并与16例多形性腺瘤和16例腺淋巴瘤进行对照分析。结果腮腺基底细胞腺瘤CT平扫均表现为腮腺内单发的类圆形病灶，边界清楚，呈均匀的稍高密度，平均CT值约（38.2±9.1）HU，与多形性腺瘤及腺淋巴瘤的平扫CT值相比无统计学差异（P＞0.05）。增强扫描，肿瘤实质部分呈明显强化，动脉期净强化值约（54.9±8.6）HU，静脉期强化程度持续增加，净强化值约（63.0±10.7）HU。动脉期：肿瘤实质部分的强化程度高于多形性腺瘤（P＜0.01），但与腺淋巴瘤无统计学差异（P＞0.05）；静脉期：肿瘤实质部分的强化程度均高于多形性腺瘤及腺淋巴瘤（P＜0.01）。结论腮腺基底细胞腺瘤的CT表现为腮腺单发病灶，多发生于浅叶，边缘规则，增强扫描明显强化，且呈“快进慢出”持续、渐进性强化特点。
목적：탐토시선기저세포선류적CT표현，우기시증강특정이급감별진단。방법회고성분석경병리증실9례시선기저세포선류적CT표현：9례균행CT평소화증강소묘；관찰병조형태학특정급강화방식，측량종류평소급쌍기증강CT치，계산정강화치，병여16례다형성선류화16례선림파류진행대조분석。결과시선기저세포선류CT평소균표현위시선내단발적류원형병조，변계청초，정균균적초고밀도，평균CT치약（38.2±9.1）HU，여다형성선류급선림파류적평소CT치상비무통계학차이（P＞0.05）。증강소묘，종류실질부분정명현강화，동맥기정강화치약（54.9±8.6）HU，정맥기강화정도지속증가，정강화치약（63.0±10.7）HU。동맥기：종류실질부분적강화정도고우다형성선류（P＜0.01），단여선림파류무통계학차이（P＞0.05）；정맥기：종류실질부분적강화정도균고우다형성선류급선림파류（P＜0.01）。결론시선기저세포선류적CT표현위시선단발병조，다발생우천협，변연규칙，증강소묘명현강화，차정“쾌진만출”지속、점진성강화특점。
ObjectiveTo investigate the CT appearances, especially the enhancement features of basal cell adenoma (BCA) in parotid gland, and the differential diagnosis of this disease.MethodsAll the 9 cases received plain and enhanced CT scanning, and the CT imaging findings of 9 patients with BCA confirmed by pathology after surgical resection were analysed retrospectively. The morphology features and the enhancement way were studied. The size of the BCA and the CT value which in the same area of lesion in plain scan and double phase enhanced CT were measured and compared with those of pleomorphic adenoma (n=16) and adenolymphoma (n=16) in the same period. Net enhancement (NE) CT value on tumor was calculated.ResultsBasal cell tumors showed a solitary round or oval nodule or mass with clear boundary and high density on CT plain-scan. At dual-phase scan, basal cell tumors showed a pattern of persistently strong enhancement: At arterial phase, the (NE) CT value (54.9±8.6)HU was statistically different from the pleomorphic adenoma, but had no statistical difference compared with adenolymphoma (P<0.01). At venous phase, the (NE) CT value (63.0±10.7)HU was statistically different from the other two tumors (P<0.01). ConclusionThe CT features of BCA in parotid gland include a solitary nodule or mass with a well boundary, more be seen in the superficial lobe; the lesion is enhanced obviously and continuously.