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Nevus Araneus (Spider Nevus) Differential Diagnoses

  • Author: Sarah Sweeney Pinney, MD; Chief Editor: Dirk M Elston, MD  more...
 
Updated: Feb 16, 2016
 
 

Diagnostic Considerations

Also consider telangiectatic mats, which are flat patches of tiny vessels of uniform size with no central vessel.

Spider telangiectasia has been used to describe leg telangiectases, most commonly appreciated in women. It is not considered synonymous with spider angioma (nevus araneus). See Varicose Veins and Spider Veins.

Differential Diagnoses

 
 
Contributor Information and Disclosures
Author

Sarah Sweeney Pinney, MD Assistant Professor, Department of Dermatology, University of Texas Medical School at Houston

Sarah Sweeney Pinney, MD is a member of the following medical societies: American Academy of Dermatology, Texas Dermatological Society, Texas Medical Association, Women's Dermatologic Society

Disclosure: Nothing to disclose.

Coauthor(s)

Ronald P Rapini, MD Professor and Chair, Department of Dermatology, The University of Texas MD Anderson Cancer Center; Distinguished Chernosky Professor and Chair of Dermatology, Professor of Pathology, University of Texas McGovern Medical School at Houston

Ronald P Rapini, MD is a member of the following medical societies: American Academy of Dermatology, American Medical Association, American Society for Dermatologic Surgery, American Society for MOHS Surgery, Society for Investigative Dermatology, Texas Medical Association

Disclosure: Received royalty from Elsevier publishers for independent contractor; May receive consulting fee from FDA panel for consulting in future, since I am on one of their committees, but at this time so far have received zero from FDA.

Specialty Editor Board

Michael J Wells, MD, FAAD Associate Professor, Department of Dermatology, Texas Tech University Health Sciences Center, Paul L Foster School of Medicine

Michael J Wells, MD, FAAD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Medical Association, Texas Medical Association

Disclosure: Nothing to disclose.

Jeffrey J Miller, MD Associate Professor of Dermatology, Pennsylvania State University College of Medicine; Staff Dermatologist, Pennsylvania State Milton S Hershey Medical Center

Jeffrey J Miller, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, Society for Investigative Dermatology, Association of Professors of Dermatology, North American Hair Research Society

Disclosure: Nothing to disclose.

Chief Editor

Dirk M Elston, MD Professor and Chairman, Department of Dermatology and Dermatologic Surgery, Medical University of South Carolina College of Medicine

Dirk M Elston, MD is a member of the following medical societies: American Academy of Dermatology

Disclosure: Nothing to disclose.

Additional Contributors

Carrie L Kovarik, MD Assistant Professor of Dermatology, Dermatopathology, and Infectious Diseases, University of Pennsylvania School of Medicine

Carrie L Kovarik, MD is a member of the following medical societies: Alpha Omega Alpha

Disclosure: Nothing to disclose.

Acknowledgements

The authors and editors of Medscape Reference gratefully acknowledge the contributions of previous author, Mark Crowe, MD, to the development and writing of this article.

References
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Large spider angioma on the left cheek of a child.
The spider angioma has been compressed and is refilling rapidly from the central vessel.
A spider nevus consists of a central arteriole with radiating thin-walled vessels. Compression of the central vessel produces blanching and temporarily obliterates the lesion. When released, the threadlike vessels quickly refill with blood from the central arteriole. The ascending central arteriole resembles a spider's body, and the radiating fine vessels resemble multiple spider legs.
Multiple spider angiomas in a patient with cirrhosis.
 
 
 
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