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Visualization of a Hematoma of the Cloquet Canal

Visualization of a Hematoma of the Cloquet Canal A white man in his mid to late forties with a history of Huntington disease presented with acute painful left eye vision loss. He was diagnosed with acute angle-closure glaucoma secondary to iris neovascularization and underwent diode cyclophotocoagulation after combination topical and systemic medical treatment failed. Workup included ultrasonography examination owing to unsuccessful left fundus visualization. This revealed a hyperechoic lesion within the vitreous, consistent with a Cloquet canal hematoma (Figure, A). Magnetic resonance imaging of the orbit also confirmed the intravitreal hyperintense lesion located anterior to the optic nerve (Figure, B). Figure. View LargeDownload A, B-scan ultrasonography of the left eye shows a Cloqeut canal hematoma (arrowhead). B, Magnetic resonance imaging demonstrates acute hemorrhagic products that appear hyperintense on T1 sequence (arrowhead). Discussion The Cloquet canal, or hyaloid canal, surrounds the hyaloid artery during embryonic growth, and persists in most healthy mature eyes.1-3 The patient’s imaging illustrates not only the persistent Cloquet canal but also its role as a potential space for hematoma formation following a retinal hemorrhage.4,5 Back to top Article Information Corresponding Author: Andrew G. Lee, MD, 6560 Fannin St, Ste 450, Houston, TX 77030 (aglee@tmhs.org). Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported. References 1. Kagemann L, Wollstein G, Ishikawa H, et al. Persistence of Cloquet’s canal in normal healthy eyes. Am J Ophthalmol. 2006;142(5):862-864.PubMedGoogle ScholarCrossref 2. Mafee MF, Goldberg MF, Valvassori GE, Capek V. Computed tomography in the evaluation of patients with persistent hyperplastic primary vitreous (PHPV). Radiology. 1982;145(3):713-717.PubMedGoogle ScholarCrossref 3. Mann IC. The relations of the hyaloid canal in the foetus and in the adult. J Anat. 1928;62(pt 3):290-296.PubMedGoogle Scholar 4. Enaida H, Hata Y, Ueno A, Ishibashi T, Torii H, Sakamoto T. Visualization of the Cloquet canal during triamcinolone-assisted vitrectomy. Arch Ophthalmol. 2004;122(10):1564-1565.PubMedGoogle ScholarCrossref 5. Maccallan AF. Melanotic sarcoma of the choroid. Proc R Soc Med. 1930;23(5):617.PubMedGoogle Scholar http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA Ophthalmology American Medical Association

Visualization of a Hematoma of the Cloquet Canal

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Visualization of a Hematoma of the Cloquet Canal

Abstract

A white man in his mid to late forties with a history of Huntington disease presented with acute painful left eye vision loss. He was diagnosed with acute angle-closure glaucoma secondary to iris neovascularization and underwent diode cyclophotocoagulation after combination topical and systemic medical treatment failed. Workup included ultrasonography examination owing to unsuccessful left fundus visualization. This revealed a hyperechoic lesion within the vitreous, consistent with a Cloquet...
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Publisher
American Medical Association
Copyright
Copyright © 2016 American Medical Association. All Rights Reserved.
ISSN
2168-6165
eISSN
2168-6173
DOI
10.1001/jamaophthalmol.2015.5364
Publisher site
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Abstract

A white man in his mid to late forties with a history of Huntington disease presented with acute painful left eye vision loss. He was diagnosed with acute angle-closure glaucoma secondary to iris neovascularization and underwent diode cyclophotocoagulation after combination topical and systemic medical treatment failed. Workup included ultrasonography examination owing to unsuccessful left fundus visualization. This revealed a hyperechoic lesion within the vitreous, consistent with a Cloquet canal hematoma (Figure, A). Magnetic resonance imaging of the orbit also confirmed the intravitreal hyperintense lesion located anterior to the optic nerve (Figure, B). Figure. View LargeDownload A, B-scan ultrasonography of the left eye shows a Cloqeut canal hematoma (arrowhead). B, Magnetic resonance imaging demonstrates acute hemorrhagic products that appear hyperintense on T1 sequence (arrowhead). Discussion The Cloquet canal, or hyaloid canal, surrounds the hyaloid artery during embryonic growth, and persists in most healthy mature eyes.1-3 The patient’s imaging illustrates not only the persistent Cloquet canal but also its role as a potential space for hematoma formation following a retinal hemorrhage.4,5 Back to top Article Information Corresponding Author: Andrew G. Lee, MD, 6560 Fannin St, Ste 450, Houston, TX 77030 (aglee@tmhs.org). Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported. References 1. Kagemann L, Wollstein G, Ishikawa H, et al. Persistence of Cloquet’s canal in normal healthy eyes. Am J Ophthalmol. 2006;142(5):862-864.PubMedGoogle ScholarCrossref 2. Mafee MF, Goldberg MF, Valvassori GE, Capek V. Computed tomography in the evaluation of patients with persistent hyperplastic primary vitreous (PHPV). Radiology. 1982;145(3):713-717.PubMedGoogle ScholarCrossref 3. Mann IC. The relations of the hyaloid canal in the foetus and in the adult. J Anat. 1928;62(pt 3):290-296.PubMedGoogle Scholar 4. Enaida H, Hata Y, Ueno A, Ishibashi T, Torii H, Sakamoto T. Visualization of the Cloquet canal during triamcinolone-assisted vitrectomy. Arch Ophthalmol. 2004;122(10):1564-1565.PubMedGoogle ScholarCrossref 5. Maccallan AF. Melanotic sarcoma of the choroid. Proc R Soc Med. 1930;23(5):617.PubMedGoogle Scholar

Journal

JAMA Ophthalmology – American Medical Association

Published: May 1, 2016

Keywords: hematoma,retinal hemorrhage,blindness,pain,eye,huntington's disease

References

  • Persistence of Cloquet’s canal in normal healthy eyes.
    Ishikawa H
  • Computed tomography in the evaluation of patients with persistent hyperplastic primary vitreous (PHPV).
    Capek V
  • The relations of the hyaloid canal in the foetus and in the adult.
    Mann IC
  • Visualization of the Cloquet canal during triamcinolone-assisted vitrectomy.
    Sakamoto T
  • Melanotic sarcoma of the choroid.
    Maccallan AF