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Conformal three-dimensional photon radiotherapy for paranasal sinus tumors
1Department of Clinical Radiology, University of Heidelberg, Im Neuenheimer Feld 400, D-69120 Heidelberg, Germany.
Abstract
Background:
Tumors in the nasal cavity and paranasal sinus are difficult to treat with radiotherapy. Usually, in addition to a two- or three-field photon technique, an interorbital electron field is required. This may result, however, in severe over- or underdosage, the latter being especially detrimental when occurring in the main tumor bulk.
Methods And Results:
We present a conformal three-dimensional treatment technique that provides sufficient interorbital dose with photons only while sparing the eyes, optic nerves and chiasm, and may be considered for selected tumors in this region.