Principles of Radiation Therapy — Flashcards

Flashcard 1: Treatment of esthesioneuroblastoma is _____ combined with preoperative chemotherapy or radiotherapy

Answer: surgery

Flashcard 2: What is a contraindication to radiotherapy in laryngeal carcinoma?_____

Answer: Cartilage invasion

Flashcard 3: _____ triad is seen in nasopharyngeal cancer

Answer: Trotters

Flashcard 4: Laser used for obstructive malignant tracheal lesions is _____

Answer: Nd:YAG

Flashcard 5: Lymph node involvement occurs _____ in middle ear carcinomas.

Answer: very late (early/late)

Flashcard 6: _____ arises from the septum of the nose, also called as nose-picker's carcinoma

Answer: SCC

Flashcard 7: _____ classification for maxillary carcinoma uses two horizontal lines of Sebileau; one passing through the floors of orbits and the other through floors of antra.

Answer: Lederman s

Flashcard 8: The cranial nerve most commonly involved in nasopharyngeal carcinoma is _____

Answer: VI

Extra: Cranial nerve VI (Abducens nerve) is the most commonly involved cranial nerve in nasopharyngeal carcinoma (NPC) due to its proximity to the foramen lacerum. CN V (Trigeminal nerve) is the second most commonly affected. Involvement of CN IX, X, XI, and XII occurs later as the tumor spreads to the parapharyngeal space or jugular foramen.