Macroscopic appearance of the resected specimen and the cut surface of the tumor. The tumor is covered by smooth pleura. A B Figure 5. Microscopic findings of the tumor. The tumor is composed of thin-walled blood vessels with dilating channels.
Hemangioma is defined as a neoplastic entity which arises from blood vessels.
Although skin is by far the most common primary site of hemangioma, any organ including the bone can be affected. Radiographically, bony hemangioma usually presents as lucent, well-demarcated defects. Most cases of bone hemangioma can be diagnosed by characteristic radiographic findings which reflect the formation of reactive spicula produced by the lesion. These findings suggested malignant characteristics. To our knowledge, there has been no previous report of rib hemangioma with such radiological findings.