BACKGROUND: Most @entity976 can be classified as either "prechiasmatic" or "retrochiasmatic" according to their growth patterns. The purpose of our study was to investigate the factors determining these growth patterns. METHODS: The radiological, operative, and pathological findings of 25 consecutive cases were reviewed. RESULTS: In cases with prechiasmatic growth (n = 14), most @entity5 were easily separated from the undersurface of the third ventricular floor with the exception of a small area at the top of the @entity5 where @entity5 -glial interfaces occurred. Pathological examination of the tough @entity5 surface demonstrated well-organized collagen tissue, which is compatible with diaphragm sellae. All @entity5 of this type had intrasellar components, suggesting a subdiaphragmatic origin for this @entity5 type. On the other hand, @entity5 with retrochiasmatic growth (n = 11) demonstrated a prefixed chiasm, and most of the surface excluding areas exposed to ventricular cerebrospinal fluid showed @entity5 -glial interfaces. With the exception of three, all @entity5 of this type lacked intrasellar components, and the diaphragm sellae was @entity308 , suggestive of a supradiaphragmatic infundibular origin of the @entity5 . CONCLUSION: Growth pattern is closely correlated to the origin of the @entity5 , whether it is above or below the diaphragm sellae. In @entity976 with prechiasmatic growth, the major portion of the @entity5 could be resected by traction. These @entity5 are candidates for the transsphenoidal approach if the sphenoid sinus is pneumatized. @entity5 with retrochiasmatic growth, which are not covered by diaphragm sellae and contact brain tissue directly, are easily torn by traction and the @entity5 -glial interface should be carefully dissected under direct vision.

Growth patterns of XXXX in children: role of the diaphragm sellae and its surgical implication.

@entity976 :: ('MESH:D003397', 'Disease') :: ['craniopharyngiomas'] @entity308 :: ('MESH:D003866', 'Disease') :: ['depressed and free of tumor'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'Tumors', 'tumors']
@entity976 :: (MESH:D003397,Disease) :: ['craniopharyngioma']
