Intracranial organizing hematoma with papillary endothelial hyperplasia features after resection and involved field radiotherapy for cerebellar juvenile pilocytic astrocytoma.
This article describes a case of organizing hematoma with features of papillary endothelial hyperplasia arising at the site of a right cerebellar juvenile pilocytic astrocytoma previously treated with surgery and involved-field radiation therapy. CTA demonstrated a mass with abnormal vascularity in the treatment bed. MRI demonstrated the evolution of the lesion from a cystic mass with a heterogeneously enhancing nodule with blood products into a nearly solid-enhancing mass with abundant areas of susceptibility effect and surrounding vasogenic edema. These imaging features warrant considering papillary endothelial hyperplasia in the differential diagnosis for a mass that develops after radiotherapy.
Department of Radiology, University of Chicago, Chicago, IL. Electronic address: dtg1@uchicago.edu.
Daniel Thomas
DT
Ginat
Department of Neurosurgery, Massachusetts General Hospital, Boston, MA.
Brian P
BP
Walcott
Derpartment of Pathology, Massachusetts General Hospital, Boston, MA.
Daniel
D
Mordes
Department of Radiology, Massachusetts General Hospital, Boston, MA.
Pamela W
PW
Schaefer
Department of Neurosurgery, Massachusetts General Hospital, Boston, MA.
Brian
B
Nahed
D000368:Aged; D001254:Astrocytoma / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D002528:Cerebellar Neoplasms / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D003937:Diagnosis, Differential; D005260:Female; D006408:Hematoma, Subdural / Q000473:pathology*; D006801:Humans; D006965:Hyperplasia / Q000473:pathology*; D008279:Magnetic Resonance Imaging; D019043:Vascular Neoplasms / Q000473:pathology*
CT; Intravascular papillary endothelial hyperplasia; MRI; Neurosurgery; Organizing hematoma; Radiotherapy