These changes are typical of dermatofibromasarcoma protuberans.
30yo male presented with left infraclavicular swelling of 3months duration. He had similar
swelling at the same site and underwent surgery one year back. Local examination revelaed
firm globular swelling in the left infraclavicular region measuring 4.0cms across. Skin
over the swelling is not pinchable. Surrounding skin shows old operative scar with
pigmentation. In addition there are a few small satellite nodules. Histological examination
revealed hapazardly arranged spindle cells having moderate anisokaryosis and vesicular
nuclei. Tumor cells seen infiltrating subcutaneous adipose tissue and entraping nerve
bundles. Mitotic count: 12/10hpf. There are no areas of necrosis. Histological features are
consistent with Dermatofibrosarcoma protuberance.