Fig. 1.

Thoracic spine (T7). Planning of the needle tract: transpeduncular approach. a Line 1 measures the distance between the spinous process and the skin insertion point. Line 2 measures the distance between the skin and the distal portion of the lesion. b CT control of the tip of biopsy needle (trap system needle). Line 1 shows the distance from the tip of the needle to the distal part of the lesion. The needle should be advanced to the most distal portion of the lesion in order to take as much diagnostic tissue as possible. Histological diagnosis: angioma