面颊部软组织异常影像分析

目的提高对面颊部软组织异常影像的认识。方法回顾分析47例面颊部软组织异常患者的影像表现。结果(1)原发于面颊部软组织病变15例,良性8例,恶性7例。邻近颌面部病变侵犯面颊软组织6例,良性1例,恶性5例。颌骨病变累及面颊部软组织26例,良性颌骨肿瘤9例,恶性颌骨肿瘤14例,颌骨慢性骨髓炎3例,均有骨质破坏。(2)根据起源部位,21例非颌骨源性面颊软组织异常,5例有骨质破坏(占23.8%)。(3)颌骨源性面颊部软组织异常26例,其中9例良性肿瘤的软组织肿块均主要局限于颌骨内,而14例恶性肿瘤的软组织肿块位于颌骨内、外,两者差别有显著意义(P=0.000)。9例良性肿瘤均呈膨胀性骨破坏,14例恶性肿瘤中,12例为溶骨性骨质破坏,2例为成骨性骨质破坏,两者差别有显著意义(P=0.000)。结论CT和MRI对判断面颊部软组织异常病变的起源部位、范围、鉴别其良恶性具有重要意义。

Imaging Analysis of Abnormal Soft Tissue in Cheeks

Objective To improve the recognition of abnormal image of soft tissue in cheeks. Methods Images of 47 cases with abnormal soft tissue in cheeks were retrospectively studied. Results (1) 15 cases were originated from soft tissue of the cheeks in which 8 cases were benign and 7 cases were malignant.6 cases were invaded by maxillofacial affection nearby,in which 1 case was benign and 5 cases were malignant.26 cases were involved by lesions of jaw bones,including benign tumor of jaw bones in 9, malignant tumor of jaw bones in 14 and chronic osteomyelitis of jaw bones in 3 and all had bony destruction; (2) According to originated position,21 cases were not originated from jaw bones,in which there were 5 cases (23.8%) with destruction of jaw bones;(3)In the 26 cases with abnormal soft tissue of cheeks originated from jaw bones, 9 were benign tumors in which all the soft tissue masses were mainly localized inside of the jaw bones, while 14 cases were malignant tumors in which all the soft-tissue masses were localized both inside and outside of the jaw bones. There was remarkable difference between the two groups(P=0.000).All 9 cases of benign tumors appeared as dilated destruction of jaw bones, while in the 14 cases of malignant tumors, 12 cases showed osteolytic bone destruction and the other 2 cases showed ossific bone destruction,there was significant difference between the two groups(P=0.000).Conclusion CT and MRI are of significance in judging original position, extent and differential diagnosis between benign and malignant lesions of abnormal soft tissue in cheeks.