Table 18 Suggested CTV2 for ethmoid and maxillary sites
| Â | Superior | Inferior | Lateral | Posterior |
|---|---|---|---|---|
Ethmoid | Cribriform plate should be included. | The inferior turbinate; In the case that the inferior border of the GTV allows a 10-mm margin around the original disease, the entire hard palate does not need to be included. | The nasal cavity, ethmoid sinuses, and the ipsilateral maxillary sinus and when indicated the volume should extend to the rectus muscle. | Include the sphenoid sinus. The retropharyngeal lymph nodes should be encompasses if the tumour extended close to the nasopharynx or if there are metastatic neck nodes from an ethmoidal carcinoma. |
In the case it was been resected the margin should encompass all the initial GTV including the dura or the dural graft. | ||||
Maxillary | The inferior border of the maxilla and the hard palate but should encompass a 10-mm margin around the initial GTV. | Medial aspect should be the nasal septum, unless violation of midline structures occurs. | The pterygopalatine and the infratemporal fossa should be included, paying special attention to encompass the masticator space and the infraorbital fissure. |