Abstract
Giant cell tumor of the tendon sheath is a tumor, which affects mainly the hands of people aged 30 to 50 years with a female prevalence. Magnetic resonance imaging (MRI) is essential for diagnosis and treatment planning. The aim of this study is to evaluate the efficacy of multiecho gradient-echoes (MeGE) sequence in detecting hemosiderin which is the hallmark of this tumor. MRIs were performed in a sample of 11 patients with a mean age of 45. With the proposed protocol, all readers were able to detect the susceptibility artifacts due to the presence of hemosiderin. MeGE sequence allows to highlight the presence of hemosiderin, and the use of 3 echo times (ET) (8, 16, and 24 ms) is suggested.
Highlights
Giant cell tumor of the tendon sheath (GCTTS) is the second most common lesion of the hand after ganglion cysts [1, 2]
Magnetic resonance imaging (MRI) is the most useful imaging modality for both diagnostic and surgical planning purposes [10], in particular, the MRI detection of intralesion artifacts due to hemosiderin deposits is the diagnostic hallmark of this tumor
The present study retrospectively reviewed the MR images of 11 patients affected by surgically treated and histologically proven GCTTSs of the hands
Summary
Giant cell tumor of the tendon sheath (GCTTS) is the second most common lesion of the hand after ganglion cysts [1, 2]. Magnetic resonance imaging (MRI) is the most useful imaging modality for both diagnostic and surgical planning purposes [10], in particular, the MRI detection of intralesion artifacts due to hemosiderin deposits is the diagnostic hallmark of this tumor. Gradient-echo (GE) sequences are the best diagnostic acquisitions in demonstrating the presence of hemosiderin, which appears as a loss of signal (the so-called blooming artifact). It is a susceptibility artifact, a distortion of the local magnetic field that makes small lesions more conspicuous [11,12,13,14,15,16,17,18]
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