Clinical Features:

• Arises at sites of trauma, such as surgical scars or following penetrating trauma
• May communicate with the dermis by way of a fistula tract.

Histologic Features:

• Dermal pseudocyst lined by polypoid projections closely resembling inflamed synovium
• The surface of the polypoid projections contains inflammatory cells and a fibrinous exudate, without an epithelial lining.
• An associated scar is commonly present.

Cases associated with this book:

Metaplastic synovial cyst
Author: Artur Zembowicz M.D. Ph.D.

Conference: DermatopathologyConsultations.com Teaching Collection