Essential radiological feature of acute mastoiditis is:: (A) Temporal bone pneumatization, (B) Clouding of air cells of mastoid, (C) Rarefaction of petrous bone, (D) Thickening of temporal bone
Answer is B. (b) Clouding of air cells of mastoid(Ref. Cummings, 6th ed., 2161)X-ray mastoid and CT scan shows clouding of air cells because of the collection of exudates in them. Later on mastoid pneumatisation is lost and a single mastoid cavity may be seen.