Most common cause of chronic retropharyngeal abscess: (A) Infective foreign body, (B) Caries teeth, (C) Caries of cervical spine, (D) Suppuration of retropharyngeal lymph node
Answer is C. CHRONIC RETROPHARYNGEAL ABSCESS (PREVEEBRAL ABSCESS) AETIOLOGY :- It is tubercular in nature and is the result of (i) caries of cervical spine or (ii) tuberculous infection of retropharyngeal lymph nodes secondary to tuberculosis of deep cervical nodes. Ref:- Dhingra; pg num:-266,267