Ohngren’s line
A theoretical plane passing between the medial canthus of the eye and the angle of the mandible; used as an arbitrary dividing line in classifying localised tumours of the maxillary sinus; tumours above the line invade vital structures early and have a poorer prognosis, whereas those below the line have a more favourable prognosis.
Dictionary > Ohngrens line
You will also like...
Water in Plants
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..
Growth and Development of a Human Baby
Upon fertilization, a zygote forms and develops into an embryo. This tutorial elaborates on the growth and development f..
New Zealand’s Unique Flora
If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..
New Zealand’s Unique Geographical History
Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..
Still Freshwater & Plants
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..
Protein Variety
The sequence of amino acids determines the type of protein. Protein is synthesized according to the sequence of nucleoti..