Vascular tumors are abnormal growths that originate from blood or lymphatic vessels. Their symptoms depend on location, size, growth speed, and whether they are benign or malignant. Common manifestations include: Visible skin changesRed-to-purple raised patches, nodules, or “strawberry” marks that may enlarge rapidly during infancy and then slowly regress . Localized swelling or lumpA soft or firm mass under the skin or within muscles that can expand and distort nearby tissues . Pain or tendernessIntermittent aching or constant sharp pain if the tumor presses on nerves, ulcerates, or becomes thrombosed . Bleeding or ulcerationSuperficial lesions may crack and bleed with... Learn more