Cyst, Digital Mucous - DermAtlas - Dermatology Image Atlas

Contributor

Greg Hosler, MD, PhD

Diagnosis

cyst, digital mucous

Body Site

toe

Age

69 years

Pigmentation

medium

Organization

discrete

Color

blue

Morphology

plaqulous (plaque / nodule / tumor)

Pattern

acral (centripetal - extremity predominant)

Comments

Digital mucus cysts may have a lining but often do not. The ones with lining are thought to have a synovial lining. Some lesions have been shown to communicate with an adjacent joint space. In my experience, the majority of these lesions do not have an identifiable lining, often resembling a dermal mucinosis. These will be positive for mucin stains.

Description

A higher power view of the cystic wall shows a thick fibrous band lined by an attenuated layer, with nuclei poking into the lumen. The lumen contains blue hazy material.

Image Added

8/28/2006 22:09:32

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Other Resources

PubMed Medline Plus Medscape

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