Zoon Balanitis

Zoon Balanitis

Gonzalo De Toro, MD

Zoon balanitis presents as an erythematous plaque that is often well demarcated image.

Zoon balanitis histologically shows an atrophic epithelium with flattened diamond-shaped keratinocytes image and mild spongiosis.



  • Plasmacytosis mucosae

  • Plasma cell balanitis

  • Balanitis circumscripta plasmacellularis (men)

  • Vulvitis circumscripta plasmacellularis (women)

  • Plasma cell cheilitis (lip)

  • Plasmocytosis circumorificialis (oral)

  • Idiopathic lymphoplasmacellular mucositis-dermatitis (skin and mucosal surfaces)


  • Idiopathic lymphoplasmacellular mucositis-dermatitis is generic term for any inflammatory accumulation of plasma cells at mucosal or cutaneous sites

  • Zoon balanitis is reserved for localized involvement of prepuce or glans penis

Jul 8, 2016 | Posted by in PATHOLOGY & LABORATORY MEDICINE | Comments Off on Zoon Balanitis

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