Fig. 1
From: Role of ultrasound in the diagnosis of primary and recurrent dermatofibrosarcoma protuberans
A, A purplish red plaque protruding above the skin for more than 20 years showed rapid enlargement in the last 9 months. B, US showed an ovoid circumscribed subcutaneous lesion with mixed internal hypoechogenicity. C, Superficial tapering at the lesion/skin interface was observed, forming tentacle-like projections or a “claw” sign (arrow), and D, color Doppler sonography demonstrated a marked intralesional color signal. E, CT images showed nonhomogeneous enhancement and tentacle-like projections or a “claw” sign (arrow). F, G, Hematoxylin and eosin staining revealed that the primary DFSP lesions involved the overlying dermis and hypodermis (arrow) (F; H&E, 25×, G; H&E, 100×). H, Immunohistochemical staining was positive for CD-34 (original magnification 200×)