Computed Tomography and Magnetic Resonance Imaging of Adenolymphoma (Warthin's Tumour) of the Parotid Gland
AK Yadav, CC Xia, YF Peng, HD Shao, XZ Gang
Hong Kong J Radiol 2015;18:27-36
DOI: 10.12809/hkjr1414262
Objective: To characterise the computed tomography / magnetic resonance imaging (CT/MRI) features to diagnose adenolymphoma (Warthin’s tumour).
Methods: Between February 2008 and December 2012, CT/MRI scans of consecutive patients referred for suspected parotid tumours were performed before surgery or fine-needle aspiration cytology. All patients underwent surgery and samples were sent for pathological confirmation of the diagnosis. Their CT/MRI scans with pathologically proven Warthin’s tumours were reviewed.
Results: All of the 17 patients in the study were men, and aged between 43 and 86 years (mean, 65 years). All the patients initially presented with gradually increasing painless masses, with duration of symptoms ranging from 1 month to 120 months (mean, 61 months). Two patients were found to have bilateral Warthin’s tumour, nine had a left-sided Warthin’s tumour, and six had a right-sided Warthin’s tumour.
Conclusion: The CT/MRI findings were helpful in distinguishing these benign lesions from other parotid gland tumours when biopsy results are non-diagnostic. Further studies are needed to assess the positive predictive value of the imaging features.
中文摘要
腮腺腺淋巴瘤（沃辛瘤）的電腦斷層掃描和磁共振成像（CT/MRI）
AK Yadav、夏琛琛、彭屹峰、邵鴻達、鋼熊炸
目的：介定腮腺腺淋巴瘤（沃辛瘤）的CT/MRI診斷特徵。
方法：2008年2月至2012年12月期間，所有腮腺腫瘤疑似病例均於術前或在細針穿刺抽吸活檢前作CT/MRI檢查。所有病人均接受手術，其活檢樣本經病理學檢查，並回顧研究確診為腮腺沃辛瘤病例的CT/MRI。
結果：被納入研究的17例全為男性，年齡介乎43歲至86歲，平均65歲。所有患者初發症狀為體積逐漸增大的無痛性腫塊，持續1至120個月（平均61個月）。其中2例雙側腮腺沃辛瘤，另9例左側腮腺沃辛瘤，6例右側腮腺沃辛瘤。
結論：如未能根據活檢結果作出診斷時，CT/MRI能將此類良性病變與其他腮腺腫瘤區分開來。但須進一步研究這些影像學特徵對沃辛瘤的陽性預測值。