Radiation Therapy

Radiation therapy must be carried to high doses for any significant probability of permanent control. The treatment volume must include all of the maxillary antrum and involved hemiparanasal sinus and contiguous areas. The orbit and its contents are excluded except under unusual circumstances. Lymph nodes of the neck, when palpable, should be treated in conjunction with treatment of advanced carcinomas of the antrum. This may be unnecessary for early tumors.

Accumulating evidence has demonstrated a high incidence (>30%–40%) of hypothyroidism in patients who have received external-beam radiation therapy to the entire thyroid gland or to the pituitary gland. Thyroid function testing of patients should be considered prior to therapy and as part of posttreatment follow-up.[6,7]