Hemorrhagic acoustic schwannoma: radiological and histopathological findings.
A 49-year-old man on anticoagulation treatment with phenprocoumon presented with acute right sided 7th and 8th cranial nerve palsy, acute hearing loss, headache, vertigo, and vomiting. CT and MRI revealed a cerebellopontine angle tumor 15mm in diameter and acute intratumoral hematoma. A cellular schwannoma composed predominantly of Antoni A tissue with dilated thin-walled vessels, surrounded by old hemorrhage with hemosiderin-laden macrophages was found histologically.
Schlieter
M
M
Division of Neuroradiology, University of Heidelberg Medical Center, Im Neuenheimer Feld 400, D 69120 Heidelberg, Germany. martin.schlieter@med.uni-heidelberg.de
Zoubaa
S
S
Kress
B
B
Unterberg
A
A
Jacobi
C
C
Hähnel
S
S
D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology*; D005155:Facial Nerve Diseases / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology*; D011859:Radiography; D000160:Vestibulocochlear Nerve Diseases / Q000209:etiology