The infratentorial compartment that contains the CEREBELLUM and BRAIN STEM. It is formed by the posterior third of the superior surface of the body of the sphenoid (SPHENOID BONE), by the occipital, the petrous, and mastoid portions of the TEMPORAL BONE, and the posterior inferior angle of the PARIETAL BONE.
Synonyms: Fossa, Posterior Cranial, Posterior Cranial Fossa, Cranial Fossas, Posterior, Cranial Fossa, Posterior, Fossas, Posterior Cranial, Clivus, Posterior Cranial Fossas
Instance information
91; was see under SKULL 1964-90 ,NIM when merely locational; entry term CLIVUS: restrict to posterior cranial fossa; other clivus sites are indexed under specific cranial bone, as clivus ossis occipitalis goes under OCCIPITAL BONE; neopl: coord IM with SKULL BASE NEOPLASMS (IM) ,91(64); was see under SKULL 1964-90
D003388