[Parasellar chondrosarcoma: report of a case operated on through a pteriono-temporal approach and review of the literature].
Cartilaginous tumours represent 0.16% of all intracranial tumours; among them 14% are chondrosarcomas (Ch-S). A majority (56%) arise from the skull base, especially from the spheno-occipital and spheno-temporal synchondroses. The others develop at the level of the dura mater convexity, falx and choroid plexuses, probably from ectopic cartilages or mesenchymatous cells with multiple potentialities. Parasellar Ch-S originate from the spheno-temporal synchondrosis and expand inside the cavernous region. With 21 published cases, they represent 51.2% of the 41 skull base Ch-S and 28.7% of the whole 73 intracranial primary Ch-S. The authors report a recent case of such a parasellar Ch-S, revealed by a left progressive, and finally total, ophthalmoplegia. The responsible mass, which eroded the lateral part of the sella turcica, was shown partially calcified and not enhanced by contrast medium at CT-scan, and was avascular on angiogram. The tumour, which was identified as a low grade myxoid Ch-S, could be entirely removed through an intradural pteriono-temporal approach. After a two-year follow-up, the clinical status was unchanged (total ophthalmoplegia) and the CT-scan did not show any sign of recurrence. The 21 cases of parasellar Ch-S published in the literature are reviewed.
Sindou
M
M
Hôpital Neurologique et Neurochirurgical Pierre-Wertheimer, Lyon.
Daher
A
A
Vighetto
A
A
Goutelle
A
A
D000328:Adult; D002813:Chondrosarcoma / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D012658:Sella Turcica / Q000000981:diagnostic imaging / Q000601:surgery*; D012888:Skull Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery*; D014057:Tomography, X-Ray Computed
Chondrosarcome parasellaire: rapport d'un cas opéré par voie ptériono-temporale et revue de la littérature.