A developmental theory of the superior sagittal sinus(es) in craniopagus twins.
BACKGROUND
Based on the study of the vascular anatomy of craniopagus twins, and particularly that of Ladan and Laleh, a theory is hypothesised regarding the embryological formation of the sagittal sinuses.
The superior sagittal sinus develops in contact with the calvarium bone within the inter-periosteal leptomeningeal space following a signal from the midline of the telencephalic vesicle derived from a single prosencephalic one. The position of the falx cerebri and most likely in the deepest part, the corpus callosum, points to the position of this midline.
Lasjaunias
Pierre
P
Department of Neuroradiology, CHU de Bicetre, Paris XI University, 78 rue du Général Leclerc, 94275, Le Kremlin-Bicetre, France. pierre.lasjaunias@bct.ap-hop-paris.fr
Kwok
Robert
R
Goh
Peter
P
Yeong
Kuan Ying
KY
Lim
Winston
W
Chng
Soke Miang
SM
D001921:Brain / Q000002:abnormalities / Q000473:pathology; D002533:Cerebral Angiography / Q000379:methods; D002550:Cerebral Veins / Q000002:abnormalities / Q000196:embryology / Q000473:pathology; D003392:Cranial Sinuses / Q000002:abnormalities / Q000196:embryology / Q000473:pathology; D005333:Fetus / Q000002:abnormalities / Q000473:pathology; D006257:Head / Q000002:abnormalities / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008954:Models, Biological; D014428:Twins, Conjoined / Q000196:embryology / Q000473:pathology*