Adiation therapy is an alternative, and patients who recur should be retreated aggressively with surgery and/or radiation therapy. (see 'radiation therapy' above. ) when radiation therapy is indicated, achieving an adequate tumor dose while minimizing damage to critical neurologic structures is critical. cheapest generic super viagra We suggest proton beam radiation therapy when this modality is available (grade 2c). If this is not available, contemporary photon-based techniques, such as stereotactic radiation surgery, stereotactic radiation therapy, are an alternative. Use of uptodate is subject to the subscription and license agreement. References volpe nj, liebsch nj, munzenrider je, lessell s. Neuro-ophthalmologic findings in chordoma and chondrosarcoma of the skull base. Am j ophthalmol 1993; 115:97. difference between 50mg viagra 100 mg Korten ag, ter berg hj, spincemaille gh, et al. Intracranial chondrosarcoma: review of the literature and report of 15 cases. J neurol neurosurg psychiatry 1998; 65:88. viagra for men 50mg Meyers sp, hirsch wl jr, curtin hd, et al. Chondrosarcomas of the skull base: mr imaging features. Radiology 1992; 184:103. Rassekh ch, nuss dw, kapadia sb, et al. Chondrosarcoma of the nasal septum: skull base imaging and clinicopathologic correlation. Otolaryngol head neck surg 1996; 115:29. Leong jl, batra ps, citardi mj. Ct-mr image fusion for the management of skull base lesions. Otolaryngol head neck surg 2006; 134:868. Heffelfinger mj, dahlin dc, maccarty cs, beabout jw. can you buy viagra in las vegas Chordomas and cartilaginous tumors at the skull base. viagra generic Cancer 1973; 32:410. Huvos, ag. Chordoma. In: bone tumors: diagnosis, treatment and prognosis, 2nd ed, huvos, ag (ed), wb saunders, philadelphia 1991. viagra for men 50mg P. 599. Perzin kh, pushparaj n. Nonepithelial tumors of the nasal cavity, paranasal sinuses, and nasopharynx. A clinicopathologic study. Xiv: chordomas. Cancer 1986; 57:784. viagra cost Harbour jw, lawton mt, criscuolo gr, et al. Clivus chordoma: a report of 12 recent cases and review of the literature. Skull base surg 1991; 1:200. buy generic viagra Volpe r, mazabraud a. A clinicopathologic review of 25 cases of chordoma (a pleomorphic and metastasizing neoplasm). buy viagra cheap Am j surg pathol 1983; 7:161. Rich ta, schiller a, suit hd, mankin hj. when does viagra patent expire in us Clinical and pathologic review of 48 cases of chordoma. Cancer 1985; 56:182. Mitchell a, scheithauer bw, unni kk, et al. Chordoma and chondroid neoplasms of the spheno-occiput. An immunohistochemical study of 41 cases with prognostic and nosologic implications. Cancer 1993; 72:2943. Abenoza p, sibley rk. cheap generic viagra Chordoma: an immunohistologic study. Hum pathol 1986; 17:744. Coffin cm, swanson pe, wick mr, dehner lp. real viagra for sale online An immunohistochemical comparison of chordoma with renal cell carcinoma, colorectal adenocarcinoma, and. Welcome to the home of
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