[Development of the sigmoid sinus and pneumatization of the mastoid process. With a contribution to the problem of secondary sclerosing of the mastoid process].
D012809:Colon, Sigmoid; D003392:Cranial Sinuses / Q000033:anatomy & histology*; D006801:Humans; D008416:Mastoid / Q000033:anatomy & histology*
CRANIAL SINUSES/anatomy and histology; MASTOID/anatomy and histology