title: The hidden antral compartment.
abstract: Two patients with rare isolated posterior antral compartments are presented. In both cases, the radiologist directed the surgeon to these clinically hidden recesses. The radiographic appearance included a walled-off compartment filled with material of soft-tissue density; clinical importance is discussed.
mesh_terms: D000328:Adult; D002481:Cellulitis / Q000000981:diagnostic imaging; D005145:Face; D005260:Female; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000002:abnormalities* / Q000000981:diagnostic imaging; D008875:Middle Aged; D010146:Pain / Q000000981:diagnostic imaging; D011859:Radiography; D012852:Sinusitis / Q000000981:diagnostic imaging*