Histopathological study of five cases with sporadic meningioangiomatosis.
We report five cases of sporadic meningioangiomatosis, three males and two females, ranging in age from 12 to 36 years at diagnosis. The lesion was found incidentally by MRI after a head trauma in one case; the other four subjects had a seizure disorders, which improved following surgical resection of the cortical lesions. Grossly, the lesionectomy specimens were of a whitish color and firm consistency. Histological examination revealed that the lesions were confined to the cortex with focal involvement of the overlying leptomeninges, and revealed unifying features of meningioangiomatosis, such as proliferating microvessels with perivascular cuffs of spindle-cell proliferation within the cortex. Two cases had numerous calcifications; one was associated with a prominent fibrocalcifying component. Immunostaining results were variable among the cases. Only vimentin was consistently positive. Some of the spindle cells were weak positive for EMA in two cases. Immunoreactions with anti-CD34 detected within the cytoplasm of the spindle cells were observed in three of the five cases. The Ki-67 proliferation index of all the cases was very low, less than 0.1%. Neurofibrillary tangles were identified in only one of the five cases using the Bodian and immunostaining methods. These findings indicate that meningioangiomatosis lesions show a wide range of clinicopathological features, making diagnosis difficult. A histopathological spectrum and differential diagnoses were discussed with a review of the literature. Since this lesion is a distinct clinicopathological entity and hamartomatous in nature, it is important to make a correct diagnosis in order to avoid further aggressive treatment.
Wang
Yin
Y
Department of Neuropathology, Institute of Neurology, Huashan Hospital, Fudan University, 12 Wu Lu Mu Qi Zhong Road, Shanghai 200040, China. yinwang88@hotmail.com
Gao
Xiang
X
Yao
Zhen-Wei
ZW
Chen
Hong
H
Zhu
Jing-Jing
JJ
Wang
Shan-Xiang
SX
Gao
Ming-Shi
MS
Zhou
Liang-Fu
LF
Zhang
Fu-Lin
FL
D000293:Adolescent; D000328:Adult; D000798:Angiomatosis / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D001921:Brain / Q000098:blood supply / Q000378:metabolism / Q000473:pathology; D001927:Brain Diseases / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D001932:Brain Neoplasms / Q000473:pathology; D002114:Calcinosis; D020785:Central Nervous System Vascular Malformations / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D005910:Glioma / Q000473:pathology; D006222:Hamartoma / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008297:Male; D008578:Meninges / Q000098:blood supply / Q000378:metabolism / Q000473:pathology*; D008875:Middle Aged; D012640:Seizures / Q000209:etiology