Evidence from mucin core protein expression that some Paget's disease on areola can be of extramammary-like histogenesis and part of multisite disease.

Triple extramammary Paget's disease, which consists ordinarily of bilateral axillary and genital lesions, is uncommon. Triple extramammary Paget's disease involving other sites has never been reported, although solitary extramammary Paget's disease can occur at various sites around the body. Erythematous plaques on the areola, axilla and genitalia of a 91-year-old man were surgically removed under the clinical diagnosis of multiple extramammary Paget's disease. Histology revealed that all three lesions consisted of intraepidermal nests of Paget cells and other isolated Paget cells scattered in the epidermis. Although adnexal invasion was observed in the genital lesion, neither intraductal invasion nor underlying breast carcinoma was detected in the areolar lesion. Immunohistochemically, the Paget cells in all lesions expressed simple epithelial cytokeratins (CK8, 18 and 19), mucin (MUC)1 and MUC5AC, but neither CK20 nor MUC2. From the histological findings, the present case was interpreted as triple extramammary Paget's disease rather than synchronous mammary and extramammary Paget's disease. Furthermore, the mucin core protein expression pattern, which was identical to that observed in extramammary Paget's disease, supported the above interpretation.
AuthorsT Ohnishi, S Shibuya, I Nemoto, S Koike, H Takizawa, T Suzuki, S Watanabe
JournalThe British journal of dermatology (Br J Dermatol) Vol. 151 Issue 3 Pg. 688-92 (Sep 2004) ISSN: 0007-0963 [Print] England
PMID15377360 (Publication Type: Case Reports, Journal Article)
Chemical References
  • Biomarkers, Tumor
  • Mucins
  • Neoplasm Proteins
  • Aged
  • Aged, 80 and over
  • Axilla
  • Biomarkers, Tumor (metabolism)
  • Breast Neoplasms, Male (metabolism, pathology)
  • Genital Neoplasms, Male (metabolism, pathology)
  • Humans
  • Male
  • Mucins (metabolism)
  • Neoplasm Proteins (metabolism)
  • Paget Disease, Extramammary (metabolism, pathology)
  • Skin Neoplasms (metabolism, pathology)

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