Theumann N H, Bittoun J, Goettmann S, Le Viet D, Chevrot A, Drapé J L
Department of Radiology B, CHU Cochin, AP-HP-Université Paris V, 27 rue du Fg Saint-Jacques, 75014 Paris, France.
Radiology. 2001 Mar;218(3):841-7. doi: 10.1148/radiology.218.3.r01mr18841.
To report the magnetic resonance (MR) imaging features of finger hemangiomas.
Sixteen patients clinically suspected of having hemangioma of the finger underwent 1.5-T MR imaging with a customized local gradient coil. The location, size, margins, signal intensity, and enhancement patterns of the lesions were noted. In accordance with the literature on MR imaging of deep hemangiomas, the authors' findings could be divided into those with typical features-that is, high signal intensity at T1- and T2-weighted imaging, lobulated appearance, strong enhancement, and heterogeneous pattern with flow void artifacts-and those with atypical features. The reference standard was surgery (n = 12) or clinical outcome (n = 4).
One posttraumatic hematoma was excluded. Most lesions were in the fingertip (n = 10), with involvement of the nail bed and/or the pulp (n = 5). Hemangiomas were classified as typical in ten cases and atypical in five. The mean size of typical lesions was larger than that of atypical lesions. The unique imaging features of atypical hemangiomas included a masslike appearance, which was either homogeneous with diffuse enhancement-suggestive of hypervascularity (n = 2)-or heterogeneous with poor enhancement (n = 3).
MR imaging characteristics of finger hemangiomas can be classified as typical or atypical. Knowledge of both patterns can be helpful in the distinction of soft-tissue abnormalities at this location.
报告手指血管瘤的磁共振（MR）成像特征。
16例临床怀疑患有手指血管瘤的患者接受了使用定制局部梯度线圈的1.5-T MR成像检查。记录病变的位置、大小、边缘、信号强度和强化模式。根据关于深部血管瘤MR成像的文献，作者的发现可分为具有典型特征的病变，即T1加权和T2加权成像呈高信号强度、分叶状外观、明显强化以及伴有流空伪影的不均匀模式，以及具有非典型特征的病变。参考标准为手术结果（n = 12）或临床结局（n = 4）。
排除1例创伤后血肿。大多数病变位于指尖（n = 10），累及甲床和/或指腹（n = 5）。血管瘤分为典型的10例和非典型的5例。典型病变的平均大小大于非典型病变。非典型血管瘤的独特成像特征包括肿块样外观，要么呈均匀弥漫强化（提示血管丰富，n = 2），要么呈不均匀强化且强化较差（n = 3）。
手指血管瘤的MR成像特征可分为典型或非典型。了解这两种模式有助于鉴别该部位的软组织异常。
