<prompt> Patient with thin painless otorrhoea, multiple perforations of the tympanic membrane and failure to respond to antimicrobial treatment. What is the most probable causative organism?Mycobacterium tuberculosisStaphylococcus aureusCandida albicansAspergillus fumigatus  <response>: Thin painless otorrhoea, multiple perforations of the tympanic membrane and failure to respond to antimicrobial treatment are the features of tubercular otitis media and it is caused by Mycobacterium tuberculosisRef: PL Dhingra, Diseases of Ear, Nose Throat, 7th edition, pg no. 81 - 82 