Hand and wrist masses represent a common diagnostic challenge. They are predominantly due to pseudomasses, which are mostly cysts and to benign masses that include tenosynovial tumors, fibrohamartolipomas, vascular malformations, glomus tumors and epidermal inclusion cysts. Malignant tumors of the wrist and the hand are extremely rare. Magnetic resonance imaging is the imaging technique of choice to characterize and circumscribe lesions to determine the best treatment option.
The feces sign is common and helps to identify the TZ. Among the CT signs of SBO, the feces sign does not independently help to predict successful nonoperative treatment or progression to ischemia.
• Multi-echo gradient-echo MR (e.g. susceptibility-weighted angiograph, [SWAN]) is increasingly used in neuroradiology. • Compared with conventional T2* sequences, SWAN improves detection of arterial thrombus. • Multiplanar SWAN analysis had the best diagnostic performance for arterial thrombus detection. • Sensitivity was 96% and specificity 100%. • Findings support combination of time-of-flight and susceptibility effects in suspected acute stroke.
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