Ultrasonic surgery.

Animal and clinical studies of a new approach in general surgery using an ultrasonic aspiration device have been encouraging. On 31 patients 11 liver procedures, 12 extensive head and neck dissections, 5 ultrasonic fulgurations for rectal cancer, and excision of 2 local oral lesions, 1 para-aortic mass, 1 pancreatic cancer, 1 giant subfascial lipoma, and 1 rectal villous adenoma have been carried out.