[Invasion of the orbit in paranasal sinus tumours].

The extension of paranasal sinus cancer into the orbit is one of arguments for carrying out orbital exenteration. Until the advent of high-resolution computed tomography, en bloc radical resection, including the orbit, was the most effective method of treating a cancer, whose size could not be adequately judged before surgery. Patient evaluation with computed tomography (CT) and magnetic resonance imaging (MR) is described.

[Site of origin of paranasal sinus malignancies].

In a group of 124 patients a site of origin of paranasal sinus and nasal cavity malignancies was evaluated on the basis of computed tomography (CT) and on the basis of operative findings. The most common malignant tumor was squamous cell carcinoma (41, 1%) and then cancers of salivary origin (20, 2%). The most common site of origin was the maxillary sinus (53, 2%) and then the nasal cavity (31, 5%).