骨巨细胞瘤的影像学诊断

Imaging diagnosis in giant cell tumor of bone

目的:探讨骨巨细胞瘤的X线平片、CT和MRI影像学表现,评价其诊断价值。方法:分析76例经病理证实的各种类型骨巨细胞瘤的影像学表现。结果:囊性型29例,表现为骨端膨胀性偏心性骨破坏;溶骨型39例,表现为骨皮质中断,边缘模糊;恶性8例,出现虫蚀样骨破坏,有骨膜反应和生长迅速的软组织肿块;伴动脉瘤样骨囊肿的19例,MRI显示可出现液-液平面;复发9例,植骨区为肿瘤组织代替。结论:大多数骨巨细胞瘤有典型的影像学表现不难作出正确的诊断,CT和MRI能提供更多的信息来提高诊断和鉴别诊断能力。

Objective： To analyse the imaging appearances and to evaluate the diagnostic value of X-ray, CT and MRI in giant cell tumor of bone. Methods： Seventy-six cases of various giant cell tumor proved by pathology, their imagings features were analyzed. Result： Twenty-nine cases of cystic type had eccentric expanding destruction of bone at the end of long bone extremities. 39 cases of osteolytic type had discontinuous cortex of bone and blurred tumor margins. Eight malignant cases had moth eaten destruction of the bone with periosteal reaction and fast-growing soft tissue mass. Liquid-liquid level in MRI imaging were found in 19 cases with aneurysmal bony cyst. In 9 cases there were recurrence, the bony implant area was replaced by tumor tissues. Conclusion： Most of the GGT have typical radiological appearances and there is no difficult in mak- ing a correct diagnosis, CT and MRI supply more information and the capability of differential diagnosis may be improved.