Repeated U.R.T.I. and mastoid pneumatization

Anthropological study of mastoid process in Pakistan Caucasian population has shown that the average mastoid process is at least 19% smaller in size and volume than an European average Caucasian mastoid. This is mainly due to genetically determined, hereditary factors. Besides, the overall diminuitive size of Pakistan mastoid is also the result of frequent and often repeated U.R.T.I., which contribute towards the development of sclerotic or poorly pneumatized mastoids, thus explaining the low lying dura, a forward placed lateral sinus and a narrow mastoid cavity. Access into the Facial recess or sinus Tympani may be quite difficult if not impossible, in surgical treatment of discharging ear