✓ Nineteen carotid arteries were examined post mortem after endarterectomy had been performed from 1 hour to 11 years previously. The sequential morphological changes at the endarterectomy site were divided into acute, reparative, and mature phases. All nine occluded arteries thrombosed during the acute phase postoperatively. The degree of medial necrosis, acute inflammation and adventitial exposure was more marked in these thrombosed acute phase arteries. By 30 days new intima covered the endarterectomy site and thereafter thrombosis was not seen. Avoidable technical errors led to thrombosis of three arteries. Anticoagulation after surgery may reduce the incidence of postoperative thrombosis. Recurrent symptomatic atheroma occurred in two cases at the original endarterectomy site 16 months and 11 years after operation.
Barry N. French and N. Barry Rewcastle
George Wortzman, Ronald R. Tasker, N. Barry Rewcastle, J. Clifford Richardson and F. Griffith Pearson
✓ A case of progressive paraparesis is reported in which the normal spinal cord herniated through a defect in the ventral meninges and dura and became incarcerated in a cavity in the dorsal aspect of the body of T-7. Progress of the paraparesis was arrested by reduction of the hernia.