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 plane orthogonal to a sagittal plane that divides the maxillary sinus into (1) an anterior-inferior part, and (2) a superior-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
  1. 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.
  2. Ren, B.; Cui, Y.; Chen, J. (Aug 1999). "[Analysis of the late curative effect of 432 cases with advanced squamous cell carcinoma of the maxillary sinus]". Zhonghua Er Bi Yan Hou Ke Za Zhi. 34 (4): 201–3. PMID 12764770.
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