| Abstract: | A case of hemorrhage into a plexiform neurofibroma of a 53-year-old woman is described. Immediately after trauma to the plexiform neurofibroma on her scalp, she noticed severe headaches and sudden enlargement of the tumor. The tumor continued to enlarge slowly. Her headaches also continued until tumor excision. The specimen taken during surgery surrounded a round cavity about 7 cm in diameter containing coagulated blood. Numerous, old, perivascular hemorrhages around many dilated vessels with extremely thin walls were revealed by histological examination. |
