<prompt> TB larynx most commonly affect:Posterior commissureAnterior commissureVentricular bandsEpiglottis  <response>: Ans: a Posterior commissure Ref: Scott Brown, 7th ed, p. 2266Etiology: Secondary to pulmonary tuberculosisSite: Posterior part affected more than anteriorInterarytenoid fold Ventricular bands Vocal cords EpiglottisCF:Earliest symptom--weakness of voice followed by hoarsenessEarliest sign--Impaired adduction.Laryngeal findings:Impaired adductionMammillated appearance - due to swelling in inter arytenoid regionMouse nibbled appearance - due to ulceration of vocal cordTurban epiglottis - due to pseudoedema of epiglottisMarked pallor of surrounding mucosaRagged ulceration and granulomas of arytenoids and interarytenoid region.Inv: Biopsy of laryngeal lesion, CXR, sputum for AFBTreatment: ATTvoice restOther laryngeal lesion sites of involvement: Lupus-Anterior posterior epiglottis is involved Syphilitic-Any part of larynx Laryngeal web-Between the vocal cords Vocal nodule-BL at junction of anterior l3rd and post 23rd of vocal cords Vocal polyp-UL at junction of anterior l3rd and post 23rdof vocal cords. Reinkes edema-Symmetrical edema of both vocal cords Contact ulcer-Vocal processes of arytenoids Laryngocele-Through thyrohyoid membrane dilatation of saccule Intubation granuloma-BL involving posterior l3rd of vocal cords. 