As a result of inoperable sinus tumors, Precisionist was euthanized on September 27, 2006.

Endodermal sinus tumors of the ovary are particularly aggressive.

Among these, a common form is teratoma with endodermal sinus tumor.

In infants and young children, these elements usually are endodermal sinus tumor, followed by choriocarcinoma.

While pure teratoma is usually benign, endodermal sinus tumor is malignant.

When treated promptly with surgery and chemotherapy, death from endodermal sinus tumors is exceedingly rare.

The recurrences are highest in sinus tumors.

For maxillary sinus tumors (small lesions of the infrastructure): Surgical resection.

For sphenoid sinus tumors: Treatment is the same as for nasopharyngeal cancers, primarily radiation therapy.

For maxillary sinus tumors: Superfractionated preoperative or postoperative radiation therapy.