Pitlyk P J, Guichard J A
Surg Neurol. 1981 May;15(5):355-7. doi: 10.1016/0090-3019(81)90168-3.
A 26-year-old man with a chronic subgaleal hematoma containing calcific elements subsequently developed an aggressive osteoblastoma within the lesion. It is presumed that the osseous elements associated with the chronic process underwent neoplastic alteration. Such a lesion should be suspected in an individual with a long-standing subgaleal hematoma who reports changes occurring with respect to either size of the lesion or the development of tenderness.
