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March 1990

Three-dimensional Anatomy of the Human Endolymphatic Sac

Author Affiliations

From the Department of Otolaryngology, Karolinska Sjukhuset, Stockholm, Sweden (Dr Bagger-Sjöbäck), the Department of Otolaryngology, Akademiska Sjukhuset, Uppsala, Sweden (Ms Jansson and Drs Friberg and Rask-Andersen), and the House Ear Institute, Los Angeles, Calif (Dr Rask-Andersen).

Arch Otolaryngol Head Neck Surg. 1990;116(3):345-349. doi:10.1001/archotol.1990.01870030109020

• Computerized and graphic three-dimensional reconstruction of a human endolymphatic duct and sac (ES) showed the ES to be a fusiform and flattened structure with marked tubularity, especially in the extraosseous region. The specimen was 18.2 mm long. It measured 60 × 200 μm at the isthmus portion of the endolymphatic duct and 200 × 7000 μm at the broadest part of the ES. The volume of the endolymphatic duct was 0.03 mm3 and of the ES, 1.85 mm3. The extraosseous ES volume represented more than two thirds of the total ES volume.

(Arch Otolaryngol Head Neck Surg. 1990;116:345-349)

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