Ohngren's line is seen in: (A) Carcinoma maxilla, (B) Carcinoma ethmoid, (C) Carcinoma mandible, (D) Carcinoma Larynx
Answer is A. 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 sinus(carcinoma of maxillary sinus) situated above this plane(suprastructural) have a poorer prognosis than those below it(intrastructural). (Ref: Textbook of diseases of ENT, PL Dhingra, 7th edition, pg no. 233)