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We report a 78 year-old male patient presented with a tumour in his forearm. He noticed
a painful subcutaneous tumour 10 years previously, but ignored it. On inspection,
an elastic, hard tumour of 35 × 25 mm in size was observed on the ulnar side of forearm,
proximal to the wrist joint. Ultrasonography showed an elliptical, clearly marginated
tumour with homogeneously low echogenicity (Figure 1[A]). Colour-flow imaging showed radial artery involvement, and scattered-flow signals
were detected in the surrounding tumour parenchyma. Surgery showed that there was
no tumour invasion in the surrounding tissues, except in the ulnar artery, which was
involved in the tumour (Figure 1[B]). Therefore, we assumed that it was a vascular tumour or an aneurysm, and excised
it with the involved portion of the ulnar artery, which was later reconstructed using
a radial-cutaneous vein graft (Figure 1[C]). The excised tumour was 20 × 16 × 13 mm in size, and was non-encapsulated and
well demarcated. The cross-sectional surface was greyish and solid, and the ulnar
artery was surrounded by the tumour (Figure 1[D]).
Figure 1Preoperative imaging, surgical view of the reconstructed artery and macroscopic findings
of the tumour.
