Fig. 2
From: Imaging features of primary sites and metastatic patterns of angiosarcoma
77-year-old man with cutaneous scalp angiosarcoma. a Axial contrast-enhanced CT images show a lobulated heterogeneous cutaneous mass overlying the left scalp (arrow) with infiltration of the subcutaneous tissues and contacting the outer table of the skull. b Axial CT (bone windows) image shows no evidence of bony destruction (arrowheads). c Coronal contrast-enhanced T1-weight MR image performed 3 months later shows enlargement of the cutaneous mass. There is heterogeneous peripheral enhancement of the mass lesion with central necrosis (asterisk) and ulceration (arrowhead). d Photomicrograph shows a specimen mostly composed of large, anaplastic epithelioid cells with extensive surrounding haemorrhage. Only focally (left of field), vasoformation is evident, with variably sized, sometimes compressed vessels lined by similarly markedly atypical ovoid cells with prominent nuclei (H and E, × 200)