Contents

SynopsisCodesLook ForDiagnostic PearlsDifferential Diagnosis & PitfallsBest TestsManagement PearlsTherapyReferences

View all Images (11)

Erythroplasia of Queyrat - Anogenital in
See also in: Overview
Other Resources UpToDate PubMed

Erythroplasia of Queyrat - Anogenital in

See also in: Overview
Contributors: Gaurav Singh MD, MPH, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Erythroplasia of Queyrat (EPQ) is a squamous cell carcinoma in situ (SCCIS) of the glans penis. The disorder is rare and comprises less than 1% of malignancies that affect males. It should be considered a type of Bowen disease, which is SCCIS at any location. The lesion is a precursor for invasive squamous cell carcinoma (SCC) and is unlikely to remit spontaneously.

EPQ classically presents as a well-demarcated, velvety, erythematous plaque, but its appearance may be variable.

The entity is considered a high-grade squamous intraepithelial lesion / neoplasia (HSIL) histologically. It is most commonly due to human papillomavirus (HPV) type 16. HPV types 18, 26, 31, 33, and 53 have also been implicated. It is more common in elderly, uncircumcised males. EPQ and penile cancer in general has a much higher incidence in non-Western countries likely due to cultural circumcision habits, as circumcision reduces risk.

Risk factors believed to contribute to the development of EPQ include lack of circumcision, Zoon balanitis, HPV infection, immunosuppression (such as human immunodeficiency virus [HIV] infection), ultraviolet (UV) light exposure, phimosis, multiple sexual partners, smoking, other underlying dermatoses (lichen sclerosus, erosive / hypertrophic lichen planus), and any form of chronic irritation, inflammation, or infection. Examples of chronic insults include trauma, herpes simplex virus infection, heat, friction, trauma, urine, and smegma.

If left untreated, EPQ will eventually develop into invasive SCC in one-third of cases.

Codes

ICD10CM:
D07.4 – Carcinoma in situ of penis

SNOMEDCT:
398768004 – Erythroplasia of Queyrat

Look For

Subscription Required

Diagnostic Pearls

Subscription Required

Differential Diagnosis & Pitfalls

To perform a comparison, select diagnoses from the classic differential

Subscription Required

Best Tests

Subscription Required

Management Pearls

Subscription Required

Therapy

Subscription Required

References

Subscription Required

Last Reviewed:09/19/2018
Last Updated:07/30/2024
Copyright © 2024 VisualDx®. All rights reserved.
Erythroplasia of Queyrat - Anogenital in
See also in: Overview
A medical illustration showing key findings of Erythroplasia of Queyrat : Foreskin, Glans of penis, Skin erosion, Dysuria, Pruritus
Clinical image of Erythroplasia of Queyrat - imageId=2079331. Click to open in gallery.  caption: 'A well-demarcated, scaly, and crusted, erythematous plaque on the distal penis.'
A well-demarcated, scaly, and crusted, erythematous plaque on the distal penis.
Copyright © 2024 VisualDx®. All rights reserved.