F. Carinci et al., CANCER OF THE NASAL CAVITY AND PARANASAL SINUSES - A NEW STAGING SYSTEM, International journal of oral and maxillofacial surgery, 25(1), 1996, pp. 34-39
This study proposes a new staging system for cancer of the paranasal s
inuses on the basis of two concepts. The first concept is that the nas
al cavity and the paranasal sinuses form a single unit. Consequently,
the mucosa of each sinus may give rise to tumors. The histopathologic
variation will be the same for all these cavities. The second concept
is that the staging of these tumors depends both on the nature of the
neoplastic cells and on the specific bone boundaries which surround th
e anatomic site and subsites. We analyzed 61 cases and we emphasize th
e need for a differential analysis of T4 tumors depending on which adj
acent region is involved.