Cutaneous Angiosarcoma: Clinicopathologic Spectrum, Immunohistochemical Features, and Diagnostic Pearls.
BackgroundCutaneous angiosarcoma (cutaneous AS) is a rare, aggressive endothelial malignancy characterized by rapid growth, early metastasis, and poor prognosis. Accurate diagnosis remains challenging due to variable clinical presentations, a broad histologic spectrum, and overlap with benign vascular proliferations.Ob...