Gandolfo N, Martinoli C, Cafiero F, Peressini A, Nicolò M, Dellachà A, Derchi L E
Istituto di Radiologia, Università di Genova, Largo Rosanna Benzi, 8, I-16132 Genova, Italy.
Anticancer Res. 2000 Sep-Oct;20(5C):3993-8.
The magnetic resonance (MR) findings in malignant melanoma of soft tissues, also called clear cell sarcoma of tendons and aponeuroses, have been described as a focal abnormality with a specific MR pattern of increased signal intensity (relative to normal muscle) on T1 weighted sequences and variably decreased signal intensity on T2 weighted sequences (relative to surrounding fat). We have reported here a case of malignant melanoma of soft tissues of the foot, studied with ultrasonography (US) and MR, in which MR showed T1-hypointensity, T2-hyperintensity and marked gadolinium uptake. We have described the relationship between the intracytoplasmic melanin amount of and these atypical MR findings.
软组织恶性黑色素瘤，也称为肌腱和腱膜透明细胞肉瘤，其磁共振（MR）表现已被描述为一种局灶性异常，在T1加权序列上具有特定MR模式，表现为信号强度增加（相对于正常肌肉），在T2加权序列上信号强度可变降低（相对于周围脂肪）。我们在此报告了一例足部软组织恶性黑色素瘤病例，该病例接受了超声（US）和MR检查，其中MR显示T1低信号、T2高信号以及明显的钆摄取。我们描述了胞浆内黑色素含量与这些非典型MR表现之间的关系。
