Difficulty breathing and a sunken appearance of the anterior abdominal wall are most indicative of rupture of which organ?

• A. spleen.
• B. aorta.
• C. stomach.
• D. diaphragm.

Answer: (D)

When the diaphragm ruptures, a hole opens between the chest and abdominal cavities. Abdominal organs can herniate into the thorax, which reduces lung expansion and leads to difficulty breathing. At the same time, much of the abdominal contents move upward, so the abdomen may look sunken or hollow. This combination of respiratory distress and a sunken anterior abdominal wall is characteristic of diaphragmatic rupture after trauma.

Spleen rupture would cause bleeding and shock signs rather than primary breathing difficulty. Aorta rupture leads to sudden, overwhelming hemorrhage. Stomach rupture typically causes peritonitis rather than the chest–lung symptoms described.