Lumbocostal triangle

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Lumbocostal triangle
The diaphragm. Under surface. (Lumbocostal triangle not labeled, but costal and lumbar regions are visible.)
With captions (labels in German.)
Latin trigonum lumbocostale
TA A04.4.02.016
FMA 58353
Anatomical terminology

The Lumbocostal triangle or Bochdalek's foramen is a defect in the diaphragm normally posterior lateral. It is formed by the incomplete closure of the pericardioperitoneal canals by the pleuroperitoneal membrane.

Clinical significance[edit]

The existence of this foramen might cause a congenital diaphragmatic hernia, Bochdalek hernia.

This condition has also been associated with thoracic kidney, the presence of the kidney in the thorax instead of the usual abdominal position.[1]


  1. ^ Doi, Y, Sakamoto A (2009) "Thoracic Kidney", New Engl J Med 361:e35. Thoracic Kidney

External links[edit]