1·Meningioangiomatosis is a rare, benign, hamartomatous lesion involving the cerebral cortex and leptomeninges.
脑膜血管瘤病是一种少见、良性的错构瘤，主要累及皮质及软脑膜。
2·Although somewhat controversial, true hemangiomas of brain, spinal cord, and the leptomeninges do exist hut have been rarely reported.
虽然存在某些争论，脑部、脊髓和软膜的真正的血管瘤是的确存在的，不过罕有报道而已。
3·Lipomyelomeningocele is an uncommon congenital anomaly, resulting from outpouching of spinal cord and its surrounding leptomeninges through the bony defect of spina bifida.
脂肪脊髓脊膜膨出是一种罕见的先天异常，源于脊髓及脊膜经由脊柱裂而向外突出。