Definition: The compartment containing the inferior part and anterior extremities of the frontal lobes (FRONTAL LOBE) of the cerebral hemispheres. It is formed mainly by orbital parts of the FRONTAL BONE and the lesser wings of the SPHENOID BONE.
NIM when merely locational; neopl: coord IM with SKULL BASE NEOPLASMS (IM)
Other names Fossa, Anterior Cranial; Anterior Cranial Fossa