PMC9619331_01
(A & B) Ultrasound image of the space-occupying lesion in 2 planes. 10 cm above the left wrist in the anterior compartment of the forearm. A well-defined mixed echogenic mass measured 2.7 cm x 2 cm x 1.2 cm. Color-Doppler ultrasound revealed no blood flow neither inside the mass nor outside. Radiologically, it was compatible with the features of a hematoma. The scanner is a Toshiba, Aplio 500.
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Ultrasound excluded a thrombosis in the upper limb and showed no active bleeding (Fig. 1). In the clinical context, the near-normal biochemical parameters, acute ultrasound imaging and the above-mentioned symptoms led to the tentative diagnose of ACS in the anterior compartment of the left forearm despite the absence of an obvious etiology other than the possible intramuscular hematoma (Fig. 1).
Intraoperative photo showing the corresponding hematoma as seen by the acute diagnostic ultrasound. No bleeding was identified. It was evaluated intraoperatively that the hematoma was located between the flexor digitorum superficialis, flexor pollicis longus and the flexor digitorum profundus.
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No ongoing bleeding was observed (Fig. 2).