Mastoid antrum

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Bone: Mastoid antrum
Coronal section of right temporal bone. ("Tympanic antrum" labeled at upper left.)
The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view. ("Mastoid antrum" labeled at upper left, in dark circle.)
Latin	antrum mastoideum
Gray's	subject #230 1042
Dorlands / Elsevier	a_50/12143566

Mastoid antrum (or tympanic antrum) is a cavity in the petrous portion of the temporal bone, communicating posteriorly with the mastoid cells and anteriorly with the epitympanic recess of the middle ear via the aperture of the mastoid antrum.

Additional images

Left temporal bone showing surface markings for the tympanic antrum (red), transverse sinus (blue), and facial nerve (yellow).

External links

• SUNY Figs 30:02-01 - "Illustration of the continuity of the nasopharynx with the middle ear cavity via the auditory tube."
• Mastoid+antrum at eMedicine Dictionary

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Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .