pterygopalatine fossa


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pter·y·go·pal·a·tine fos·sa

[TA]
a small pyramidal space, housing the pterygopalatine ganglion and third part of the maxillary artery, between the pterygoid process, the maxilla, and the palatine bone.

pterygopalatine fossa

a space shaped like a teardrop between the bones on the lateral side of the skull immediately posterior to the maxilla. It is a major site of distribution for the maxillary nerve and for the terminal part of the maxillary artery.

pterygopalatine fossa

A thin wedge-shaped space behind the nasal cavity and below the deep apex of the orbit; laterally, it opens into the infratemporal fossa (via the pterygomaxillary fissure). The pterygopalatine fossa contains the pterygopalatine ganglion. The maxillary branch of the trigeminal nerve (CN V) enters the fossa from behind, through the foramen rotundum, and the pterygoid nerve enters the fossa via the pterygoid canal.
Synonym: sphenomaxillary fossa
See also: fossa

Bichat,

Marie F.X., French anatomist, physician, and biologist, 1771-1802.
Bichat canal - Synonym(s): cistern of great cerebral vein.
Bichat fat pad - an encapsuled mass of fat in the cheek on the outer side of the buccinator muscle. Synonym(s): buccal fat pad
Bichat fissure - the nearly circular fissure corresponding to the medial margin of the cerebral (pallial) mantle, marking the hilus of the cerebral hemisphere.
Bichat foramen - Synonym(s): cistern of great cerebral vein
Bichat fossa - sphenomaxillary fossa, a small pyramidal space, housing the pterygopalatine ganglion, between the pterygoid process, the maxilla, and the palatine bone. Synonym(s): pterygopalatine fossa
Bichat ligament - the lower fasciculus of the posterior sacroiliac ligament.
Bichat membrane - the inner elastic membrane of arteries.
Bichat protuberance - Synonym(s): buccal fat pad
Bichat tunic - the tunica intima of the blood vessels.
References in periodicals archive ?
Anatomy of greater palatine foramen and canal and pterygopalatine fossa in Thais: considerations for maxillary nerve block.
Left and right pterygopalatine fossa volume calculated in 71 skull, according to cephalic type.
If extension to the lower part of the pterygopalatine fossa was present, the posterior portion of the inferior turbinate was resected.
As all of our patients were staged as IIB or lower, our findings support the effectiveness of the transnasal endoscopic approach for tumors that have extended to the nasal cavity, nasopharynx, paranasal sinuses, and pterygopalatine fossa.
Scholtz et al performed transnasal endoscopic excision on 7 patients with JNAs that had extended into the nasal cavity, the nasopharynx, the pterygopalatine fossa, and the ethmoid, sphenoid, and maxillary sinuses.
The thinner bone of the posterior wall of the maxillary sinus was removed with a curved J curette, which exposed the fascia-enveloped contents of the pterygopalatine fossa.
The fatty tissue of the pterygopalatine fossa was ablated with a bipolar forceps.
MRI demonstrated a primary soft-tissue mass in the soft-tissue palate (figure 1) and a localized abnormal intensity on enhancement in the region of the pterygopalatine fossa (figures 2 and 3).
CT of perineural tumor extension: Pterygopalatine fossa.
5] Critical areas include the bony orbital walls, the cribriform plate, the fovea ethmoidalis, and the pterygopalatine fossa.
On axial view, there was focal inward bowing of the posterolateral wall of the sinus, with widening of the pterygopalatine fossa and infratemporal fat plane (figure 2).
Additionally, anterior wall bowing, a widening of the pterygopalatine fossa and infratemporal fossa fat plane, an elevation of the canine fossa, or a relatively lateral position of the infraorbital canal might be seen.