<prompt> Ohngrens line is seen inCarcinoma maxillaCarcinoma ethmoidCarcinoma mandibleCarcinoma Larynx  <response>: A theoretic plane passing between the medial canthus of the eye and the angle of the mandible; used as an arbitrary dividing line in classifying localized 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 ourable prognosis. Growths of the maxillary sinuscarcinoma of maxillary sinus situated above this planesuprastructural have a poorer prognosis than those below itintrastructural. Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, pg no. 233 