Xia Xian-wu, Shen Jian-min, Kang Wu-gen, Yuan Jian-jun, Sheng Liang
Department of Medical Imaging, Taizhou Municipal Hospital, Taizhou College, Taithou 318000, Zhejiang, China.
Zhongguo Gu Shang. 2009 Apr;22(4):259-61.
To discuss the imaging manifestation and clinical value in herniation pit of femoral neck.
One case proved by operation and pathology and twenty cases with typical imaging manifestation described by Pitt were reviewed retrospectively. There were 17 males and 4 females with an average age of 53 years old(ranging from 30 to 85 years). All cases were examined by X-ray films and CT, and 13 cases were performed with MRI.
Twenty-nine lesions were found in the 21 cases, 9 cases were in right side, 8 cases were in left side, 4 cases were in both sides. The lesions were all located in the superior lateral part of the femoral neck and anterior lateral base of femoral head. The lesions were round or oval, and most of their greatest diameter was less than 16 mm. X-ray films showed a central radiolucency with a thin clear sclerotic rim or simple sclerotic loop. CT scans showed a well-defined lesion of soft-tissue attenuation with sclerotic margin. The lesions had focal cortical perforation. On MRI images,most lesions showed uniformly long T1 and long T2 fluid signal intensity.
Herniation pit of femoral neck have some specific imaging features, CT can make accurate diagnosis. X-ray and MRI are helpful to diagnosis.
探讨股骨颈疝窝的影像学表现及临床价值。
回顾性分析1例经手术病理证实及20例具有Pitt所描述典型影像学表现的病例。其中男性17例，女性4例，平均年龄53岁（30～85岁）。所有病例均行X线片及CT检查，13例行MRI检查。
21例共发现29处病灶，右侧9例，左侧8例，双侧4例。病灶均位于股骨颈上外侧部及股骨头前外侧基底部。病灶呈圆形或椭圆形，最大径多数小于16mm。X线片表现为中央透亮区伴薄而清晰的硬化边缘或单纯硬化环。CT扫描显示边界清晰的软组织密度病灶，有硬化边缘，病灶有局灶性皮质穿孔。在MRI图像上，多数病灶表现为均匀长T1和长T2液体信号强度。
股骨颈疝窝有一定的特异性影像学表现，CT能作出准确诊断，X线及MRI对诊断有帮助。
