<prompt> Which of the following is included in the Levenson criteria for congenital cholesteatomaWhite mass medial to normal tympanic membraneAttico-antral perforation of the tympanic membraneDefinite history of otorrhoeaHistory of prior otologic procedures  <response>: levensons criteria : Mass medial to the tympanic membrane. Normal tympanic membrane. No previous history of ear discharge, perforation or ear surgery. Ref: Internet sources. 