title: [Lymphoma presenting as Sister Mary-Joseph's nodule].
abstract: BACKGROUND
  Cutaneous metastasis of the umbilicus is generally associated with intra-abdominal adenocarcinoma, rarely with a malignant hemopathy.
  
  
  METHODS
  We report a case of lymphoma presenting as Sister Mary-Joseph's nodule, in a 79-year-old man. Histology evidenced small-cell lymphoma.
  
  
  CONCLUSIONS
  Umbilical metastasis is uncommon, most of these lesions arising from gastric adenocarcinoma. Only two cases of lymphoma, associated with an umbilical metastasis have been reported. This case opens the discussion on the fact that the umbilicus is generally not a site of metastatic spread of lymphomas.
authors.affiliation: Service de Dermatologie, Hôpital Fournier, 36, quai de la bataille, 54035 Nancy Cedex.
authors.forename: C
authors.initials: C
authors.lastname: Dornier
authors.forename: S
authors.initials: S
authors.lastname: Reichert-Penetrat
authors.forename: A
authors.initials: A
authors.lastname: Barbaud
authors.forename: W
authors.initials: W
authors.lastname: Kaise
authors.forename: J L
authors.initials: JL
authors.lastname: Schmutz
mesh_terms: D000368:Aged; D001706:Biopsy; D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000175:diagnosis* / Q000473:pathology; D008198:Lymph Nodes / Q000473:pathology; D008297:Male; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000556:secondary*; D014472:Umbilicus / Q000473:pathology