Abstract
Twelve per cent of operations for chronic middle ear inflammation during the period from May 1969 to Dec. 1971 were secondary operations. Among these 98 ears 33 recidivant of secondary acquired cholesteatomata were found. Several factors were considered to contribute to the need of seconda&sZy operations. Relevant preoperative treatment, meticulous operative technique and permanent follow-up are recommended as prerequisites of surgery for chronic middle ear cleft inflammation.