The endothoracic fascia is a thin layer of connective tissue lining the inside of the chest wall, between the ribs and intercostal muscles and the parietal pleura. It is the thoracic equivalent of the transversalis fascia in the abdomen and provides a natural plane for separating the pleura from the chest wall.
| Location | Lining the internal surface of the thoracic wall, deep to the ribs and intercostal muscles. |
|---|---|
| Boundaries |
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Binds the parietal pleura to the chest wall while allowing a surgical cleavage plane.
Surgeons strip the pleura from the chest wall in this plane during extrapleural procedures. Paravertebral blocks place local anaesthetic close to it, where it helps contain spread. Its thickening above the lung apex forms the suprapleural membrane.
Bleeding that collects between the endothoracic fascia and the chest wall after rib fractures or line insertion, seen as a convex shadow on imaging.
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