Ohngren's line
In head and neck cancer, Ohngren's line is a line that connects the medial canthus of the eye to the angle of the mandible.[1]
The line defines a
posterior
part.
Tumours that arise in the anterior-inferior part, i.e. below Ohngren's line, generally have a better prognosis than those in the other group.[2]
Addition to above a vertical line through pupil is also considered, which divides the above-mentioned structures into 4 different regions.
The structures at posterosuperior medial have worst prognosis and that at anteroinferior medial are least dangerous.
References
- ^ Carlson, Diane L. "Protocol for the examination of specimnes for patients with carcinomas of the nasal cavity and paranasal sinuses" (PDF). Retrieved 2 April 2012.
- PMID 12764770.