The patient, a 17-year-old female, had recurrent otorrhoea

The patient, a 17-year-old female, had recurrent otorrhoea in her right ear for 9 years and worsened for 1 month.Patients due to nine years ago has no obvious incentives in the right ear discharge repeatedly, hearing loss, occasionally intermittent tinnitus, has repeatedly at a local hospital, application “antibiotics” after treatment, symptom relief, then symptoms in patients with recurrent, since last month, the patient right ear discharging symptoms aggravate, for yellow, viscous pus, slight odor, accidentally with hemorrhagic secretions, no headache, dizziness, nausea and vomiting.Physical examination: body temperature 36.5℃, pulse 84 beats/min, respiration 20 beats/min, blood pressure 90/60mmHg, clear mind, poor spirit.Ear examination: the left tympanic membrane marked clear, a small amount of purulent secretion in the right external auditory canal, smelly, there was a defect in the upper bone behind the external auditory canal, the perforated part of the loose tympanic membrane was covered with thin layer of epithelium, after removal, there was bean residue like substance in the tympanic cavity.

Question:

  1. What other tests should be carried out during the diagnosis?

  2. Diagnosis and basis

  3. Treatment principles