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Cutaneous Horn Differential Diagnoses

  • Author: Patrick S Rush, DO; Chief Editor: William D James, MD  more...
 
Updated: Apr 27, 2015
 
 

Diagnostic Considerations

Also consider perforating pilomatricoma in the differential diagnosis.[32]

Differential Diagnoses

 
 
Contributor Information and Disclosures
Author

Patrick S Rush, DO Chief Resident, Department of Pathology and Laboratory Medicine, University of Wisconsin Hospital and Clinics

Patrick S Rush, DO is a member of the following medical societies: American Society for Clinical Pathology, American Society of Dermatopathology, College of American Pathologists, United States and Canadian Academy of Pathology, International Society of Bone and Soft Tissue Pathology, Digital Pathology Association, Wisconsin Society of Pathologists

Disclosure: Nothing to disclose.

Coauthor(s)

Clay J Cockerell, MD Director, Clinical Professor, Department of Dermatology, Division of Dermatopathology, University of Texas Southwestern Medical Center

Clay J Cockerell, MD is a member of the following medical societies: American Academy of Dermatology, American Medical Association, International AIDS Society, International Academy of Pathology, International Society for Dermatologic Surgery, North American Clinical Dermatologic Society, Society for Investigative Dermatology, Southern Medical Association

Disclosure: Nothing to disclose.

Specialty Editor Board

David F Butler, MD Section Chief of Dermatology, Central Texas Veterans Healthcare System; Professor of Dermatology, Texas A&M University College of Medicine; Founding Chair, Department of Dermatology, Scott and White Clinic

David F Butler, MD is a member of the following medical societies: American Medical Association, Alpha Omega Alpha, Association of Military Dermatologists, American Academy of Dermatology, American Society for Dermatologic Surgery, American Society for MOHS Surgery, Phi Beta Kappa

Disclosure: Nothing to disclose.

Edward F Chan, MD Clinical Assistant Professor, Department of Dermatology, University of Pennsylvania School of Medicine

Edward F Chan, MD is a member of the following medical societies: American Academy of Dermatology, American Society of Dermatopathology, Society for Investigative Dermatology

Disclosure: Nothing to disclose.

Chief Editor

William D James, MD Paul R Gross Professor of Dermatology, Vice-Chairman, Residency Program Director, Department of Dermatology, University of Pennsylvania School of Medicine

William D James, MD is a member of the following medical societies: American Academy of Dermatology, Society for Investigative Dermatology

Disclosure: Nothing to disclose.

Additional Contributors

R Stan Taylor, MD The JB Howell Professor in Melanoma Education and Detection, Departments of Dermatology and Plastic Surgery, Director, Skin Surgery and Oncology Clinic, University of Texas Southwestern Medical Center

R Stan Taylor, MD is a member of the following medical societies: American Academy of Dermatology, American College of Mohs Surgery, American Medical Association

Disclosure: Nothing to disclose.

Acknowledgements

Fiona Larsen, MBChB, FRACP Dermatologist/Dermatopathologist, Private Practice; Consultant Dermatologist, Waitemata District Healthboard

Disclosure: Nothing to disclose. Carlos Ricotti, MD Fellow, Department of Dermatology, Division of Dermatopathology, University of Texas Southwestern School of Medicine

Carlos Ricotti, MD is a member of the following medical societies: American Academy of Dermatology, American Medical Association, American Society of Dermatopathology, and International Society of Dermatopathology

Disclosure: Nothing to disclose.

Nancy Silvis, MD Medical Director of Dermatology Clinic, Assistant Professor, Department of Internal Medicine, Adobe Dermatology

Disclosure: Nothing to disclose.

References
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A typical presentation of a cutaneous horn on the ear.
An unusually large cutaneous horn extending from the ear.
Medium power view of the mixed hyperparakeratosis and hyperorthokeratotic keratin that makes up the actual horn (hematoxylin and eosin [H&E] stain, original magnification 20x).
Low power view of a cutaneous horn overlying an actinic keratosis (hematoxylin and eosin [H&E] stain, original magnification 20x).
 
 
 
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