Diseases causing FUO vary according to the socioeconomic status, personal characteristics, geographic region of residence, and age of the patients.
In their study on a series of 857 FUO cases between 1990 and 2006, Sipahi et al.
In the literature, we identified only nine studies mentioning Wegener's granulomatosis and FUO together (5-13).
In view of the extent of the spectrum for diagnosis of patients with FUO, a multidisciplinary approach is essential.
Subsequent development to FUO is, as we said, gradual.
The "transition" from IUO (Tables 3-5, lines c-d; Tables 6-7, line c), to FUO (lines f) can thus be traced in the intervening lines.
In particular, the "transition" mentioned above between IUO and FUO is marked in both languages by the first occurrences of [Cop.
These are joined at IUO by iterative items, while the TACs--yet, already, still, deja and (continuative) encore, and their very infrequent negative counterparts--are not used until FUO is established.