Digital Mucous Cyst
Senait W. Dyson, MD
David Cassarino, MD, PhD
Key Facts
Terminology
Solitary, dome-shaped, skin-colored to translucent papule
Synonyms: Digital myxoid cyst, digital synovial cyst
Etiology/Pathogenesis
Most view digital mucous cyst and digital myxoid cyst to be synonymous
Microscopic Pathology
Subepidermal cystic space or clefts with collection of mucin and stellate fibroblasts
No epithelial lining
Mucin is positive with colloidal iron and Alcian blue stains
Top Differential Diagnoses
Ganglion cyst
Focal mucinosis