Davies A M, Pikoulas C, Griffith J
MRI Centre, Royal Orthopaedic Hospital, Birmingham, UK.
Eur J Radiol. 1994 Aug;18(3):205-9. doi: 10.1016/0720-048x(94)90335-2.
The imaging studies of nine histologically proven eosinophilic granulomas were reviewed. Radiographs and MRI studies were performed on all patients, with eight patients being examined by bone scintigraphy and six by CT. Matrix calcification, not evident on radiography, was demonstrated in two cases by CT. MRI proved superior to both the radiographs and CT in defining the medullary extent of the lesion and the surrounding soft tissue changes. In eight of nine cases, on STIR sequences, an endosteal rim of low signal intensity surrounding the main lesion was present and may be an early feature of healing. The degree of peritumoral oedema accompanying eosinophilic granuloma was less extensive than that seen in either Ewing's sarcoma or osteomyelitis. The presence of both a low signal endosteal rim and limited peritumoural oedema on STIR sequences may be a useful indicator to the diagnosis of underlying eosinophilic granuloma.
回顾了9例经组织学证实的嗜酸性肉芽肿的影像学研究。对所有患者均进行了X线片和MRI检查，8例患者接受了骨闪烁显像检查，6例接受了CT检查。CT显示2例存在X线片上不明显的基质钙化。在确定病变的髓腔范围和周围软组织变化方面，MRI被证明优于X线片和CT。在9例中的8例中，在短T1反转恢复（STIR）序列上，主要病变周围存在低信号强度的骨内膜边缘，这可能是愈合的早期特征。嗜酸性肉芽肿伴随的瘤周水肿程度比尤因肉瘤或骨髓炎所见的要轻。STIR序列上低信号骨内膜边缘和有限的瘤周水肿的存在可能是诊断潜在嗜酸性肉芽肿的有用指标。
