PMC9898769_01
ultrasound aspects; A,B) measures of the mass 27mm/30mm/19mm; (C,D) ultrasound showing a fusiform, homogeneous and well-defined mass in relation to the course of the radial nerve
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F1
Diagnostic assessment: soft tissue ultrasound revealed a fusiform mass, homogeneous, well defined and hypoechoic resting on the biceps muscle with no sign of invasion or rupture of its fibers, measuring 27mm/30mm/19mm (Figure 1).
A,B) magnetic resonance imaging (MRI) aspect: soft tissue process well delimited and pseudo-encapsulated in relation to the course of the radial nerve compatible with a schwannoma
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F2
The MRI objectified a tissue process of 35/25/43 mm, which had hyposignal on T1, hypersignal on T2, well delimited and pseudo-encapsulated, eccentric in relation to the course of the radial nerve (Figure 2).
surgical exploration: A) encapsulated tumor sitting between the fibers of the biceps muscle on the path of the radial nerve; B) enucleation without fascicular lesion; C) aspect of the radial nerve after the enucleation
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F3
Therapeutic interventions: the treatment was surgical: under axillary brachial plexus block, A Z incision centered on the tumor was performed, exploration revealed an encapfiguresulated tumor sitting between the fibers of the biceps muscle on the path of the radial nerve, an enucleation was performed without fascicular lesion (Figure 3).