Transverse fissure
Citation, DOI, disclosures and article data
Citation:
Deng F, Knipe H, Transverse fissure. Reference article, Radiopaedia.org (Accessed on 21 Mar 2025) https://doi.org/10.53347/rID-69150
rID:
69150
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Disclosures:
At the time the article was created Francis Deng had no recorded disclosures.
View Francis Deng's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosures
Revisions:
3 times, by
2 contributors -
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Synonyms:
- Transverse fissure of Bichat
- Bichat's fissure
- Cerebral fissure of Bichat
- Fissura transversa cerebri
The transverse fissure (of Bichat) is the cerebral fissure that extends laterally from the ambient cistern towards the hippocampus.
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Gross anatomy
The transverse fissure is the lateral extension of the ambient cistern that connects with the choroidal fissure superolaterally and hippocampal fissure inferolaterally. These three fissures are collectively known as the perihippocampal fissures 1. The transverse fissure separates the thalamus superiorly from the parahippocampal gyrus inferiorly 2.
Some sources also describe an even more medial part of the transverse fissure that separates the thalamus from the fornix and corpus callosum 3.
History and etymology
The structure is named after French anatomist Marie-François Xavier Bichat 4.
Related pathology
- ex vacuo dilatation due to medial temporal lobe/hippocampal atrophy
- compression due to hydrocephalus 1
- extra-axial tumours such as epidermoid cyst and meningioma 1
References
- 1. Holodny AI, George AE, Golomb J, de Leon MJ, Kalnin AJ. The perihippocampal fissures: normal anatomy and disease states. (1998) RadioGraphics. 18 (3): 653-65. doi:10.1148/radiographics.18.3.9599389 - Pubmed
- 2. Dekeyzer S, De Kock I, Nikoubashman O, Vanden Bossche S, Van Eetvelde R, De Groote J, Acou M, Wiesmann M, Deblaere K, Achten E. "Unforgettable" - a pictorial essay on anatomy and pathology of the hippocampus. (2017) Insights into Imaging. 8 (2): 199-212. doi:10.1007/s13244-016-0541-2 - Pubmed
- 3. Narkiewicz O, de Leon MJ, Convit A, George AE, Wegiel J, Morys J, Bobinski M, Golomb J, Miller DC, Wisniewski HM. Dilatation of the lateral part of the transverse fissure of the brain in Alzheimer's disease. (1993) Acta neurobiologiae experimentalis. 53 (3): 457-65. Pubmed
- 4. Shoja MM, Tubbs RS, Loukas M, Shokouhi G, Ardalan MR. Marie-François Xavier Bichat (1771-1802) and his contributions to the foundations of pathological anatomy and modern medicine. (2008) Annals of Anatomy. 190 (5): 413-20. doi:10.1016/j.aanat.2008.07.004 - Pubmed
- 5. de Leon MJ, Golomb J, George AE, Convit A, Tarshish CY, McRae T, De Santi S, Smith G, Ferris SH, Noz M. The radiologic prediction of Alzheimer disease: the atrophic hippocampal formation. (1993) AJNR. American Journal of Neuroradiology. 14 (4): 897-906. Pubmed
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