Abdominothoracic is an adjective meaning “referring to the abdomen and the thorax” together. It joins two major body regions into one term:

• the abdomen (the belly, holding the stomach, intestines, and liver), and
• the thorax (the chest, holding the heart and lungs).

The word is built from abdomino- (“abdomen”) + thoracic (“thorax/chest”), so it literally means “of the abdomen and chest.”

Where the two regions meet

The abdomen and the thorax sit one above the other and are separated by the diaphragm — the dome-shaped breathing muscle that forms the floor of the chest and the roof of the belly. Many structures and conditions involve the area around this boundary, which is why a single term linking the two regions is useful.

How it’s used

“Abdominothoracic” appears most often in anatomy and surgery, where a structure, incision, or condition spans both the chest and the abdomen. Examples include:

• abdominothoracic incision → a surgical cut that opens both the chest and the abdomen, used when a surgeon needs access to organs crossing the diaphragm
• abdominothoracic region → the area straddling the boundary between the two cavities
• describing injuries, tumours, or operations that involve both regions at once

This kind of combined approach is needed for certain operations — for instance, surgery on the lower oesophagus or the upper stomach, which sit right where the chest meets the belly.

Why the combined term matters

Using one word for “abdomen and thorax” is precise and efficient. It immediately signals to a medical team that two body cavities are involved, which affects how an operation is planned, how the patient is positioned, and what recovery may involve. It’s a clear example of how medical language combines roots to capture complex anatomy in a single term.

Disclaimer

This content is for general educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Conditions or procedures involving both the abdomen and chest can be complex and serious. If such a matter has been discussed with you, or you have related symptoms, consult a qualified healthcare professional for guidance specific to your situation. In an emergency, seek medical care promptly or call your local emergency number.