CAJ | 학술논문

目的：分析长骨皮质旁骨肉瘤的临床及影像表现特征，以提高对该病诊断和鉴别诊断的能力。方法分析研究12例经手术病理证实的长骨皮质旁骨肉瘤的临床及影像学资料,其中发生在股骨近端2例，股骨远端8例，肱骨近端及胫骨近端各1例。结果长骨皮质旁骨肉瘤X表现为紧贴骨皮质的分叶状外生肿块,4例显示肿块与骨皮质间透亮线。CT表现为软组织肿块内见团状及菜花状不规则高密度瘤骨影。在MRI上，肿瘤T1WI加权呈低信号， T2WI加权呈高信号为主的混杂信号，T1WI增强扫描肿瘤的实性成分可见强化。CT、MRI均可显示肿瘤的软组织成分及对髓腔的侵犯，本组有4例髓腔受累，其中1例CT未显示。结论皮质旁骨肉瘤的影像学表现具有特征性，CT、MRI可清晰地显示肿瘤及其周围组织，对指导临床诊断与治疗具有重要的参考作用。
목적：분석장골피질방골육류적림상급영상표현특정，이제고대해병진단화감별진단적능력。방법분석연구12례경수술병리증실적장골피질방골육류적림상급영상학자료,기중발생재고골근단2례，고골원단8례，굉골근단급경골근단각1례。결과장골피질방골육류X표현위긴첩골피질적분협상외생종괴,4례현시종괴여골피질간투량선。CT표현위연조직종괴내견단상급채화상불규칙고밀도류골영。재MRI상，종류T1WI가권정저신호， T2WI가권정고신호위주적혼잡신호，T1WI증강소묘종류적실성성분가견강화。CT、MRI균가현시종류적연조직성분급대수강적침범，본조유4례수강수루，기중1례CT미현시。결론피질방골육류적영상학표현구유특정성，CT、MRI가청석지현시종류급기주위조직，대지도림상진단여치료구유중요적삼고작용。
Objective To investigate the imaging features of long bone parotsteal osteosarcoma. Methods The clinical data and images of 12 patients with long bone parotsteal osteosarcoma confirmed operatively were reviewed. 2 cases occurred in proximal femur, 8 cases occurred in distal femur,and 1 case occurred in proximal humerus and tibia. Results 12 cases of long bone parosteal osteosarcoma showed lobulated and exophytic mass attached to the underlying cortex on X-ray. A radiolucent line between the tumor and the normal cortex was noticed in 4 cases. CT scan demonstrated soft tissue mass with focal or cauliflower-like high density tumor bone in it. The lesions appeared as low signal intensity on T1WI and mixed mainly high signal intensity on T2WI. The signal density of the solid component in tumor was increased after gadolinium was injected. Both CT and MRI showed solid component in tumor and the marrow involvement. The marrow was involved in 4 cases, one was missed in CT finding. Conclusion There were characteristic imaging manifestations of the neoplasm. CT and MRI can clearly show the neoplasm and its surrounding tissues, and it's an improtant reference in the diagnosis and surgical treatment .