Ohngren's line

Ohngren's line is a theoretical line used in the staging of pancreatic cancer. It is drawn from the medial canthus of the eye to the angle of the mandible. Tumors anterior to this line are considered resectable, while those posterior to the line are considered unresectable.

Definition

Ohngren's line is an imaginary line drawn from the medial canthus (the inner corner of the eye) to the angle of the mandible (the lower jawbone). This line is used to determine the resectability of pancreatic cancer tumors. Tumors that are located anterior (in front of) to this line are generally considered resectable, meaning they can be surgically removed. Tumors that are located posterior (behind) to this line are generally considered unresectable, meaning they cannot be surgically removed.

Clinical Significance

The clinical significance of Ohngren's line lies in its use as a tool for staging pancreatic cancer. The location of a tumor in relation to this line can provide valuable information about the extent of the disease and the potential for surgical intervention. It is important to note, however, that the use of Ohngren's line is just one aspect of a comprehensive cancer staging process. Other factors, such as the size of the tumor, the presence of metastasis, and the patient's overall health, also play a crucial role in determining the appropriate treatment approach.

Limitations

While Ohngren's line can provide useful information about the resectability of pancreatic cancer tumors, it is not without limitations. For example, it does not take into account the size of the tumor or the presence of metastasis, both of which can significantly impact the feasibility of surgical intervention. Furthermore, the line is based on anatomical landmarks that can vary between individuals, potentially leading to inaccuracies in its application.

See Also

• Pancreatic cancer
• Cancer staging
• Resectability