Image Quiz: A Chihuahua with traumatic bite wounds

A gas-filled, displaced stomach is correct!

Which of the following is the most likely cause of the curvilinear mineral opacity structure dorsal to the vertebral column on the lateral projection?

a) A tooth from the attacking dog

b) A fragment of the left 13th rib

c) A fractured vertebral body

d) A stick fragment the patient was impaled on during the fight