When the lesion is surgically opened, an empty cavity is found.

Cranial ultrasound can be done on babies before the bones of the skull have grown together or on adults after the skull has been surgically opened.

Usually the area will need to be surgically opened and all debris and infected material removed.

The boy's chest was surgically opened, and manual cardiac massage was undertaken for 45 minutes until the arrival of the defibrillator.

Among the most common methods of study is dissection, in which the body of an animal or cadaver is surgically opened and its organs studied.

An open surgical biopsy, meaning that the chest wall must be surgically opened under general anesthesia to remove a portion of lung tissue, may be necessary to obtain enough tissue to make an accurate diagnosis.

A similar classification is open versus closed treatment, in which open treatment refers to any treatment in which the fracture site is surgically opened, regardless of whether the fracture itself is an open or closed fracture.

In fact, all rabbits used for the test died, because they had to be surgically opened in order to examine the ovaries.

The stomach (gastrotomy) or intestine (enterotomy) can be surgically opened to remove the foreign body.

Because cranial ultrasound cannot be done after the skull bones have fused, it is only done after the skull has been surgically opened during brain surgery.