[Severe forms of cholesteatomatous chronic otitis (author's transl)].

: Eighty further case-reports of patients, hospitalized for particularly severe forms of cholesteatomatous chronic otitis since 1977, are analyzed. -Cholesteatomas were associated with spontaneous atticotomy and atrial invasion in 37 cases, while in 8 patients the cholesteatoma was revealed by the presence of premalleal and anterior subligamental perforations. -New features were observed in 7 cases of cholesteatomatous and osteomatous chronic otitis. -Giant cholesteatoma was present in 12 cases, and unilateral tumors in 6 patients. -Four rarer types of lesion, obviously of a serious nature, were observed, including: -polypoid and hemorrhagic tumors (6 cases), -persistently highly fetid cholesteatomas (6 cases), and those that appeared to be "under pressure" (13 cases). -Finally, 7 cases were unusual and disturbing, demonstrating early extensive osteitic recurrence less than 6 months after initial excision. Widespread evidement is necessary for the majority of these cases.