Yan H J, Lin K E, Lee S T, Tzaan W C
Department of Neurosurgery, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C.
Changgeng Yi Xue Za Zhi. 1998 Dec;21(4):521-5.
Calcified or ossified chronic subdural hematoma is a rare entity that usually presents as a space-occupying lesion over the cerebral convexity. We report a case of calcified and ossified chronic subdural hematoma in an unusual location that has not been previously reported. A 24-year-old man with a history of tonic-clonic convulsions since 7 months of age was admitted because of increasing frequency and duration of seizures. Computed tomography and magnetic resonance imaging demonstrated a fusiform extra-axial lesion just above the tentorium and adjacent to the cerebral falx. A calcified and ossified chronic subdural hematoma was noted and was almost completely removed by craniotomy. Better seizure control was achieved by removal of the calcified chronic subdural hematoma. Calcified subdural hematoma, calcified epidural hematoma, calcified empyema, meningioma, calcified arachnoid cyst, and calcified convexity of the dura mater with acute epidural hematoma should be considered for the differential diagnosis of an extra-axial calcified lesion.
钙化或骨化的慢性硬膜下血肿是一种罕见的疾病，通常表现为大脑凸面的占位性病变。我们报告一例钙化和骨化的慢性硬膜下血肿，其位置不寻常，此前未见报道。一名自7个月大起就有强直阵挛性惊厥病史的24岁男性因癫痫发作频率和持续时间增加而入院。计算机断层扫描和磁共振成像显示在小脑幕上方且紧邻大脑镰处有一个梭形的轴外病变。发现一个钙化和骨化的慢性硬膜下血肿，通过开颅手术几乎将其完全切除。通过切除钙化的慢性硬膜下血肿实现了更好的癫痫控制。在鉴别诊断轴外钙化病变时，应考虑钙化性硬膜下血肿、钙化性硬膜外血肿、钙化性脑脓肿、脑膜瘤、钙化性蛛网膜囊肿以及伴有急性硬膜外血肿的硬脑膜钙化凸面。
