This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors of Nose and PNS, Subject name: ENT
Juvenile angiofibroma confined to nasal cavity, preferred approach for surgery - 
Select and explain. 
A. Transnasal endoscopic, B. Transpalatal, C. Lateral rhinotomy, D. Transmaxillary
A: Transnasal endoscopic
Answer: A: Transnasal endoscopic 
Explanation: Ans. is 'a' i.e., Transnasal endoscopic Staging of juvenile nasopharyngeal aniofibroma (Modified sessions, et al)IA:Limited to nose and/or nasopharyngeal vaultIB :Extension into > 1 sinus11 A:Minimal extension into PMFII B:Full occupation of PMF with or without erosion of orbital bonesIIC:ITF with or without cheek or posterior to pterygoid platesIII A:Erosion of skull base-minimal intracranialIII B:Erosion of skull base-extensive intracranial with or without cavernous sinus Proposed staging and surgical protocol for JNAModified sessionsSurgical approachIA, IB, IIAEndoscopic transnasalIIBExcision via lateral rhinotomyIICExcision via Weber-FergussonIII AExcision via Weber-Fergusson and its extensions/maxillary swing/craniotomyIIIBRadiotherapy (IMRT)