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...

Genetics – Lesson Outline & Worksheets
Topics Modules Quizzes/Worksheets Description Introduction to Genetics Genetics – Definition: Heredity and ..

Cell Structure
A typical eukaryotic cell is comprised of cytoplasm with different organelles, such as nucleus, endoplasmic reticulum, G..

Freshwater Community Energy Relationships – Producers & Consumers
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..

Circulation
The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

The Hominids
The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..

Temperature Regulation in Animals
This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..