PDF(Pubmed)
Abstract：
UNASSIGNED: Tenosynovial giant cell tumors (TSGCTs) are benign but aggressive lesions, and the treatment is resection. A low to intermediate signal intensity on both T1- and T2-weighted images of magnetic resonance imaging (MRI) is characteristic, which is similar to the signal intensity of muscle, and therefore can be challenging for lesion detection. T2-star (T2*)-weighted MR images reflect paramagnetic deoxyhemoglobin, methemoglobin, or hemosiderin.
UNASSIGNED: In 23 TSGCT patients (6 male and 17 females), the T2*MRI findings were analyzed. The tumor locations involved 10 large joints including nine knees and one ankle, 10 small joints including six fingers and four toes, as well as three wrists/hands.
UNASSIGNED: Ten diffuse and 13 localized tumors were predominantly located in the large joints and small joints, respectively. The T2*-weighted images indicated three signal patterns of low, iso and high signal intensity compared to muscle. Low-, iso- and high-signal intensities were seen in 22 (96 %), 23 (100 %) and 12 (52 %) of the locations, respectively. To distinguish TSGCTs from the surrounding tissue, the low intensity T2*-weighted images and low to intermediate intensity T1-weighted images when compared to muscle and fluid, respectively were useful for the large joints. Low to intermediate intensity on T1- or T2-weighted images was useful to distinguish TSGCTs from subcutaneous tissue in the small joints.
UNASSIGNED: MRI using T2*-, as well as T1- and T2-weighted images, may be useful to detect lesions and assess the extent of TSGCTs in a tissue-specific manner, which is important for surgical planning.
UNASSIGNED: In 23 TSGCT patients (6 male and 17 females), the T2*MRI findings were analyzed. The tumor locations involved 10 large joints including nine knees and one ankle, 10 small joints including six fingers and four toes, as well as three wrists/hands.
UNASSIGNED: Ten diffuse and 13 localized tumors were predominantly located in the large joints and small joints, respectively. The T2*-weighted images indicated three signal patterns of low, iso and high signal intensity compared to muscle. Low-, iso- and high-signal intensities were seen in 22 (96 %), 23 (100 %) and 12 (52 %) of the locations, respectively. To distinguish TSGCTs from the surrounding tissue, the low intensity T2*-weighted images and low to intermediate intensity T1-weighted images when compared to muscle and fluid, respectively were useful for the large joints. Low to intermediate intensity on T1- or T2-weighted images was useful to distinguish TSGCTs from subcutaneous tissue in the small joints.
UNASSIGNED: MRI using T2*-, as well as T1- and T2-weighted images, may be useful to detect lesions and assess the extent of TSGCTs in a tissue-specific manner, which is important for surgical planning.
摘要：
■肌腱滑膜巨细胞瘤（TSGCT）是良性但侵袭性病变，治疗方法是切除.磁共振成像（MRI）的T1和T2加权图像上的低至中等信号强度是特征，类似于肌肉的信号强度，并且因此对于病变检测可能是具有挑战性的。T2星（T2*）加权MR图像反映顺磁性脱氧血红蛋白，高铁血红蛋白,或者铁血黄素.
■在23名TSGCT患者（6名男性和17名女性）中，分析T2*MRI表现.肿瘤部位涉及10个大关节，包括9个膝盖和1个脚踝，10个小关节，包括六个手指和四个脚趾，以及三个手腕/手。
■10例弥漫性肿瘤和13例局限性肿瘤主要位于大关节和小关节，分别。T2*加权图像表示三种低信号模式，与肌肉相比，iso和高信号强度。低-,等信号强度和高信号强度见于22例(96%)，23个(100%)和12个(52%)的地点，分别。为了区分TSGCT和周围组织，与肌肉和液体相比，低强度T2*加权图像和低至中等强度T1加权图像，分别对大型关节有用。T1或T2加权图像上的低至中等强度可用于区分TSGCT与小关节中的皮下组织。
■使用T2*-，以及T1和T2加权图像，可能有助于以组织特异性方式检测病变并评估TSGCT的范围，这对手术计划很重要。
■在23名TSGCT患者（6名男性和17名女性）中，分析T2*MRI表现.肿瘤部位涉及10个大关节，包括9个膝盖和1个脚踝，10个小关节，包括六个手指和四个脚趾，以及三个手腕/手。
■10例弥漫性肿瘤和13例局限性肿瘤主要位于大关节和小关节，分别。T2*加权图像表示三种低信号模式，与肌肉相比，iso和高信号强度。低-,等信号强度和高信号强度见于22例(96%)，23个(100%)和12个(52%)的地点，分别。为了区分TSGCT和周围组织，与肌肉和液体相比，低强度T2*加权图像和低至中等强度T1加权图像，分别对大型关节有用。T1或T2加权图像上的低至中等强度可用于区分TSGCT与小关节中的皮下组织。
■使用T2*-，以及T1和T2加权图像，可能有助于以组织特异性方式检测病变并评估TSGCT的范围，这对手术计划很重要。
