骨母细胞瘤的影像学诊断_许尚文

骨母细胞瘤的影像学诊断

许尚文,曾建华,张雪林,彭旭红,赵云辉,段刚

(广州第一军医大学南方医院影像中心广东广州510515)

=摘要>目的:评价影像学检查对骨母细胞瘤的诊断价值。方法:对18例经手术病理证实骨母细胞瘤的影像学表现进行回顾性分析。18例均摄了平片,6/18例均行C T平扫和增强、10/18例均行MR平扫和增强。结果:脊柱6例,颅骨4例,胫骨2例,股骨2例,肱骨、骨盆、距骨、软组织各1例。骨母细胞瘤以脊柱及长管状骨好发。平片和CT多表现、膨胀性囊状骨破坏,病灶内常有钙化、骨化,边缘常有轻度硬化缘;MRI检查多呈不均匀性长T1、T2囊状膨胀性骨质破坏,增强扫描多呈不均匀性强化,部分见液平和软组织肿块;一般无骨反应。结论:CT、MRI对骨母细胞瘤诊断较平片有优势,综合影像学检查能提高诊断符合率。

=关键词>肿瘤;骨母细胞瘤;X线诊断;体层摄影术,X线计算机;磁共振成像

中图分类号:R738.1;R814.42文献标识码:A文章编号:1006-9011(2005)01-0028-03

Imaging diagnosis of osteoblastona XU Shang-wen,ZE NG Jian-hua,Z HANG Xue-lin,et al.Departaent o f Ra diology,N an fang H os-pita l,First Milita ry Me dical University,Guan gzhou510515,China

=Abstract>Objective:To assess the value of i maging in diagnosing osteoblastoma.Methods:A retrospective analysis was made on

i maging of18patien ts with pathologically approved osteoblastoma.Imaging materials includes radiographs(n=18),CT scan(n=6)and

MRI(n=10).Results:Of18cases,the lesions were located at spi ne i n6,at skull in4and at hu merus,pelvic,talus,soft ti ssue mass in1respecti vely.Predilections site of osteoblastoma were found i n spine and long tubular bone.On plain film and C T i mages,the lesions presented cystic destruction of bone,small do-t patchy and macular calcifacation with edge lightly scleroses.On MRI images,the lesion presented expanding bony destruction,and MR images always showed a multicystic appearance with inhomogeneous low intensi ty in T1WI and inhomogeneous high intensity in T2WI.After contras t the lesions showed inhomogeneous enhancement.Predilections site of osteoblas-toma were found i n spine and long bones.Fluid-fluid level and/or soft tissue mass were found partial patients but no periosteal reaction was found.C onclusion:C T and MRI are superior to the plain film.It contributes to diagnosing osteoblastoma combining with plain film,C T and MRI.

=Key words>Tu mor;Osteoblastoma;Radiographic diagnosis;Tomography,X-ray computed;Magnetic resonance imaging

骨母细胞瘤(osteoblastoma)属少见肿瘤,国内、外文献报道不多,多以个案形式报道[1,2],有关其CT、MRI表现报道就更少了。本文收集我院从1995年1月~2004年2月共收治18例经手术病理证实骨母细胞瘤,分析总结骨母细胞瘤的影像学资料,旨在提高术前诊断水平。

1材料与方法

18例经证实的骨母细胞瘤患者中男10例,女8例,年龄11~56岁,平均2916岁。病程最短三个月,最长达6年余。临床无特异症状,多因疼痛或局部肿块来就诊。8例出现明显神经压迫症状,2例有明确外伤史,1例有鼻咽癌放疗史,碱性磷酸酶

作者简介:许尚文(1973-),男,福建省永定县人,毕业于第一军医大学,医师,在读硕士研究生,主要从事CT和M RI影像诊断工作增高3例。

18例骨母细胞瘤均摄了正侧位X线平片; Sie mens的Somatom Plus4全身螺旋C T检查平扫6例,均做静脉团注法增强扫描,采用各部位常规扫描法,层厚和间隔3~10mm;SSie mens的115T Magnetom Vision Plus VB33A超导型全身磁共振扫描仪检查10例,均做了静脉团注法Gd-DTPA增强,均采用各部位常规扫描法,层厚4~8m m。

2结果

18例中恶性4例(图1~3),良性14例。其中脊柱6例(颈椎2例、胸椎2例、腰椎2例且均为恶性),颅骨4例(额眶骨1例、颞骨鳞部1例、蝶骨1例、上颌骨1例),胫骨2例(恶性1例),股骨2例,肱骨、骨盆(恶性)、距骨、软组织各1例。

全部为单发,形态均为不规则;最大819c m@

28

医学影像学杂志2005年第15卷第1期J M ed Imaging Vol.15No.12005