Quiz 8

Image 1:

Question:

1. Name the labelled structures.
2. What causes non-visualization or poor outline of “D”?

Answers:

The labelled structures

• A: right 12th rib
• B: fecal material/air in the ascending colon
• C: right psoas outline
• D: right properitoneal fat pad
• E: right sacro-iliac joint
• F: Air in transverse colon
• G: Left renal shadow
• H: Left pedicle of third lumbar vertebra
• I: Left sacral foramina
• J: Left obturator internus

Properitoneal fat pad

• is absent in 18% of normal radiographs
• poor outline with adjacent oedema or presence of ascites