Recurrent delayed brain hemorrhage over years after irradiation and chemotherapy for astrocytoma.

We report on an adult patient with a right frontal astrocytoma, classification WHO II, who suffered from radionecrosis 3.5 years after surgery and combined radio- and chemotherapy. Beginning 8 years after initial diagnosis, repeated episodes of bilateral cerebral hemorrhage and cavitation occurred.

[Malignant schwannoma of the rectum].

Malignant schwannomas are rare. These malignomas are primary nerve sheath tumors that usually arise from a peripheral nerve. They appear most frequently in the lower extremities, including the hips and buttocks (34.

[Circular dissection of the ascending aorta with intimo-intimal invagination. CT diagnosis of a rare form of aortic dissection].

Intimointimal intussusception is a rare type of aortic dissection. The intimal tear occurs circumferentially with intussusception of the intimal flap downstream into the aortic arch causing obstruction of the great supraaortic vessels. A CT diagnosis has only once been reported.