Transseptumpellucidumrostrostomy: anatomical considerations and neuroendoscopic approach.
OBJECTIVE
Verify the presence of the rostral lamina of the corpus callosum, and set parameters for neuroendoscopy.


METHODS
Relationship of the floor of the frontal horn of lateral ventricle and the hypothalamic-septal region were studied after sagittal and axial sections of the brains. Measurements were compared using F and Student t tests. The correlations between anterior-posterior diameter of the interventricular foramen / anterior-posterior diameter of the fornix column, and between anterior-posterior diameter of the interventricular foramen / length of the rostral lamina were performed by Pearson index test.


RESULTS
There was no statistically significant difference in measurements performed in both hemispheres (p<0.05). Positive correlations were observed between the anterior-posterior diameter of the interventricular foramen / anterior-posterior diameter of the fornix column (R = 0.35), and between the anterior-posterior diameter of the interventricular foramen / length of the rostral lamina (R = 0.23).


CONCLUSIONS
Rostral lamina was observed in all brains. It was possible to perform an endoscopic fenestration in the rostral lamina, communicating safely the lateral ventricle with a polygonal subcallosal cistern.
Department of Surgery and Anatomy, FMRP, USP, Ribeirao Preto, SP, Brazil.
Eduardo José Takashi
EJ
Fuziki
Roberto Alexandre
RA
Dezena
Benedicto Oscar
BO
Colli
D000293:Adolescent; D000328:Adult; D000368:Aged; D003337:Corpus Callosum / Q000033:anatomy & histology*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008488:Medical Illustration; D008875:Middle Aged; D044583:Neuroendoscopy / Q000379:methods*; D009929:Organ Size; D012688:Septum Pellucidum / Q000033:anatomy & histology*; D055815:Young Adult