Kurabayashi T, Ida M, Yoshino N, Sasaki T, Ishii J, Ueda M
Department of Dental Radiology and Radiation Research, Faculty of Dentistry, Tokyo Medical and Dental University, Japan.
Dentomaxillofac Radiol. 1997 Jan;26(1):16-21. doi: 10.1038/sj.dmfr.4600200.
To define the CT criteria for differentiating malignant from benign tumours of the minor salivary glands of the palate and to evaluate their accuracy.
CT findings of 63 patients with histopathologically proven minor salivary gland tumours of the palate (23 malignant, 40 benign) were retrospectively evaluated.
Aggressive bone destruction was a specific finding of malignant tumours, but was seen in only 57% (13/23) of this series. Extension into the pterygopalatine fossa was observed in seven malignant and one benign tumour. Calcifications within a tumour were observed in four cases, all of which were malignant. These three CT findings were significantly more frequent in malignant tumours. Using any one of these as the criterion for the malignancy, the sensitivity was 78% (18/23), specificity 98% (39/40) and accuracy 90% (57/63).
Malignant tumours of the minor salivary glands of the palate are very likely to show any or all of aggressive bone destruction, extension into the pterygopalatine fossa and calcification, whereas benign tumours can almost always be correctly diagnosed by their absence.
确定鉴别腭部小涎腺良恶性肿瘤的CT标准并评估其准确性。
回顾性评估63例经组织病理学证实的腭部小涎腺肿瘤患者（23例恶性，40例良性）的CT表现。
侵袭性骨质破坏是恶性肿瘤的特异性表现，但在本系列中仅57%（13/23）的病例出现。7例恶性肿瘤和1例良性肿瘤观察到翼腭窝受侵。4例肿瘤内见钙化，均为恶性。这三种CT表现恶性肿瘤中显著更常见。以其中任何一项作为恶性标准，敏感性为78%（18/23），特异性为98%（39/40），准确性为90%（57/63）。
腭部小涎腺恶性肿瘤很可能出现侵袭性骨质破坏、翼腭窝受侵和钙化中的任何一项或全部，而良性肿瘤几乎总能通过未出现这些表现而正确诊断。
