[Clinical and morphological aspects of diagnostics and treatment of exudative frontitis].

The present work is based on the examination of 37 sagittal sawcut sections through the heads of human corpses of either gender. Evacuation paths for the contents of frontal sinuses were studied experimentally in different types of fronto-nasal communication. Two variants of infundibular fronto-nasal communication are described, lateral and medial, formed by the bony septum between uncinate process and bulla ethmoidalis uncinata. It was shown that the direction of evacuation of the contents of a frontal sinusis and the possibility of their rhinoscopic identification are directly dependent on the type of the naso-frontal communication. Cannulas have been developed that optimally match the shape of the naso-frontal communication. An approach is proposed to the choice of the most adequate instrument for endonasal probing frontal sinuses.