成软骨细胞瘤骨膜反应的影像特点

目的分析成软骨细胞瘤骨膜反应的X线及CT表现特点,探讨其诊断价值。方法对39例成软骨细胞瘤的X线平片及CT资料进行回顾性分析研究,重点分析其骨膜反应的部位、形态及范围。结果39例中24例出现骨膜反应,在平片上8例位于干骺端的两侧,CT上见环绕骨皮质周围,较广泛。5例骨膜反应与皮质断裂处有一间隔距离;3例位于皮质断裂处的对侧。5例骨膜反应很广泛,在CT上呈不规则的广泛花边状改变。7例伴有周围软组织肿胀。结论成软骨细胞瘤骨膜反应广泛,形态多样,与病灶部位及病灶的良性形态不相称;这一征象对本病的诊断与鉴别诊断具有重要价值。

Radiological characteristics of periosteal reactions in chondroblastoma

Objective To analyze radiological characteristics of periosteal reactions in chondroblastoma, and discuss the diagnostic value. Methods Thirty-nine cases with chondroblastoma of long bone were examined with x-ray and CT. The periosteal reactions were paid more attention. Results Of 39 cases, The periosteal reactions were found in 24 cases. Which of 8 cases was located on the metaphysis the both sides in plain film, around the cortical bone on CT, widespread. In 5 cases, periosteal reaction and the cortical bone break place had a gap distance; in 3 cases it was located the cortical bone break place opposite side. Very widespread periosteal reaction was found in 5 cases, and assumed the irregular widespread lace shape change on CT. The periosteal reaction was accompanied by the swelling of soft tissue in 7cases. Conclusion Periosteal reaction of chondroblastoma is high in rate, diverse in shape, widespread, not symmetric with the benign bone focus. This sign has the important value to the diagnosis and the differential diagnosis of chondroblastoma.