To compare this approach with the condition of the basisphenoid suture (Hoffmeister, 1969), specimens were rearranged in four age groups according to the degree of closure.
To compare our characters for discriminating age groups with the basisphenoid suture, all procedures except Wilks' lambda were performed on the reclassified specimens.
3) Some authors argue that recurrence is unrelated to tumor stage or surgical approach, (17-19) but recurrence rates are reduced through meticulous surgical removal and may be related to residual disease in the basisphenoid
3 yr nasopharyngeal carcinoma 2 79 Clival Infratemporal 1 yr chordoma fossa approach 3 47 Sphenoclival None 3 yr chondrosarcoma 4 28 Clival chordoma None 10 mo 5 68 Oncocytoma of the None 15 mo postnasal space 6 49 Recurrent Trans-sphenoidal 9 mo basisphenoid
excision chordoma 7 50 Clival chordoma None 2.
Rostrally it articulates with the caudal edge of the basisphenoid.
Rostrally it articulates with the caudal edge of the palatine and caudally with the basisphenoid.
One month before our evaluation, a CT was performed at another hospital and showed an osteolytic lesion with infiltrative margins and heterogeneous contrast enhancement, primarily involving the central base of the skull and covering both the basisphenoid
bearing bilateral posterolateral rami contacting prootic.
Ventral process of basisphenoid
rudimentary, not reaching to paraspheniod; basisphenoid
with a small pore between it and basis crania.
Three age classes were assigned on the basis of ventral braincase suture closures between the basioccipital and basisphenoid
, and between the basisphenoid
and presphenoid (Figure 2).
We also scored discrete mandibular and cranial characters identified by Ruedas (1998) to distinguish robustus and chapmani, including the basisphenoid
foramina, tympanic process, and mental foramen.
16) Nicolai et al reviewed the cases of 15 patients who underwent endoscopic surgery for juvenile angiofibroma, including 4 who had modified Fisch stage III disease; they emphasized the importance of drilling out the pterygoid canal to explore the basisphenoid