Citation, DOI, disclosures and article data
Citation:
Deng F, Meneses C, Glick Y, Tegmen. Reference article, Radiopaedia.org (Accessed on 19 Feb 2025) https://doi.org/10.53347/rID-73295
The tegmen is the thin osseous plate that separates the middle cranial fossa from the tympanic and mastoid cavities of the temporal bone. It is comprised 1,2:
tegmen tympani (roof of the tympanic cavity)
tegmen mastoideum (roof of the mastoid cavity)
tegmen antri (roof of the antrum), which is often described as part of either tegmen tympani or tegmen mastoideum 2; uncommonly described separately 3,4
tegmen tubari (roof of the Eustachian tube) 5
Embryologically, the tegmen is formed by the junction of the petrous and squamous parts of the temporal bone 6.
Related pathology
Dehiscence of the tegmen in conjunction with dural weakening can lead to meningocele, meningoencephalocele, or CSF fistula into the middle ear (with effusion and CSF otorrhea) or, rarely, into the mastoid air cells 5.
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1. Juliano AF, Ginat DT, Moonis G. Imaging review of the temporal bone: part I. Anatomy and inflammatory and neoplastic processes. (2013) Radiology. 269 (1): 17-33. doi:10.1148/radiol.13120733 - Pubmed
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2. Standring S. Gray's Anatomy. 41st edition. (2015) ISBN: 9780702052309
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3. Makki FM, Amoodi HA, van Wijhe RG, Bance M. Anatomic analysis of the mastoid tegmen: slopes and tegmen shape variances. (2011) Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology. 32 (4): 581-8. doi:10.1097/MAO.0b013e31820e75f7 - Pubmed
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4. Sanna M, Fois P, Paolo F, Russo A, Falcioni M. Management of meningoencephalic herniation of the temporal bone: Personal experience and literature review. (2009) The Laryngoscope. 119 (8): 1579-85. doi:10.1002/lary.20510 - Pubmed
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5. Mansour S, Magnan J, Ahmad H, Nicolas K, Louryan S. Middle Ear Cavity. Comprehensive and Clinical Anatomy of the Middle Ear. 2019;:19-68. doi:10.1007/978-3-030-15363-2_2
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6. Som PM, Curtin HD. Head and Neck Imaging. (2011) ISBN: 9780323053556
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