Obliteration of old mastoids and wet middle ears with autologous abdominal
fat seems to be a reliable technique to render chronically discharging mast
oid cavities or open middle ears dry and closed. This paper is the third in
the series and looks at the intermediate results at five years. Of the 16
patients (one bilateral) 94.1 per cent of the ears are still dry and uninfe
cted with closed external meati. Recurrent cholesteatoma was found in two p
atients at implantation and removed.