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Axial (A) and coronal (B) views of the definitive intensity-modulated radiation therapy plan of a patient with lacrimal sac squamous cell carcinoma showed 6791.8 cGy to be delivered to the primary tumor cavity. Sagittal (C) views of intensity-modulated radiation therapy plan showed 6791.8 cGy to the primary tumor and 6552.8 cGy to the cervical lymph nodes. Dose-volume histogram (D)
