Beatty R M, Zervas N T
Neurosurgery. 1983 Aug;13(2):204-7. doi: 10.1227/00006123-198308000-00019.
A medical student developed a progressive mesencephalic lesion found to be cystic in nature by computed tomographic (CT) scanning. Stereotactic aspiration of a pontomesencephalic hematoma was carried out twice, and the patient recovered. Angiography and CT scanning demonstrated a vascular lesion compatible with a venous angioma.