Fig. 33
From: Understanding a mass in the paraspinal region: an anatomical approach
Trauma conditions examples in in the paraspinal region. Right psoas haematoma in a 76-year-old female following a fall. Coronal CT scan reconstruction without (a) and with contrast agent (b) shows enlarged right psoas (arrowheads) with active extravasation of contrast (arrow). Muscle contusion of the right erector spinae muscle in a 27-year-old male after bicycle accident (c). Contrast-enhanced axial CT scan reconstruction (c) demonstrates enlarged erector spinae muscle (arrowheads) and subcutaneous emphysema (arrow). Yellow stars show epicentre of masses