Thornwald's cyst -unusual cause of bilateral serous otitis media
Introduction: Thornwaldt's cyst is defined as “an inconstant blind sac located above the pharyngeal tonsil in the midline of the posterior wall of the nasopharynx .It is usually a developmental abnormality where communication between pharyngeal endoderm and notochordal remnants persist. Case Report: 32 yr old male, presented with bilateral decreased hearing since 2 and half years, with no other ear symptoms. Audiogram showed bilateral Conductive Hearing loss, with Impedence audiogram showing bilateral type B curve.