title: [Gastric sarcoidosis revealed by cutaneous follicular sarcoidosis].
abstract: BACKGROUND
  Sarcoidosis is a disease well known to dermatologists because of the frequency of cutaneous involvement. Routine screening is performed for involvement of the lungs, lymph nodes, eyes, liver and heart. However, gastro-intestinal sarcoidosis is both rare and frequently silent, and it thus often goes undiagnosed. We report the case of a Caribbean woman whose cutaneous lesions allowed a posteriori diagnosis to be made of gastric sarcoidosis.
  
  
  METHODS
  A 45-year-old Caribbean woman consulted for diffuse erythematous or hypochromic, squamous and follicular micropapular lesions associated with inflammatory rheumatoid arthritis. Clinical examination and laboratory data led to a diagnosis of cutaneous sarcoidosis. It was later discovered that she had presented epigastric pains a few months earlier and that she had undergone gastroscopy and gastric biopsies. Histopathology had revealed non-caseating epithelioid-cell granulomas with giant cells, but no further exams were performed. The patient was diagnosed a posteriori with cutaneous-articular and gastric sarcoidosis.
  
  
  CONCLUSIONS
  In contrast with hepatic involvement, which is frequent and well-known, sarcoidosis affecting the gastro-intestinal tract is rare and poorly known. This form of the disease is frequently clinically silent and is thus probably under-reported. The stomach is the site most frequently affected. Gastric sarcoidosis is seen in some 10% of patients with systemic sarcoidosis and is symptomatic in less than 1% of cases. It is important to diagnose these forms since they may be associated with a certain degree of morbidity.
authors.affiliation: Service de dermatologie, hôpital Saint-Louis, 1, avenue Claude-Vellefaux, 75010 Paris, France.
authors.forename: C
authors.initials: C
authors.lastname: Demongeot
authors.forename: I
authors.initials: I
authors.lastname: Moulonguet
authors.forename: P
authors.initials: P
authors.lastname: Georges
authors.forename: M
authors.initials: M
authors.lastname: Bagot
authors.forename: B
authors.initials: B
authors.lastname: Flageul
mesh_terms: D000962:Antimalarials / Q000627:therapeutic use; D001168:Arthritis / Q000175:diagnosis / Q000188:drug therapy / Q000473:pathology; D001706:Biopsy; D005260:Female; D005499:Folliculitis / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D005753:Gastric Mucosa / Q000473:pathology; D005773:Gastroscopy; D015726:Giant Cells / Q000473:pathology; D018859:Hair Follicle / Q000473:pathology; D006801:Humans; D006886:Hydroxychloroquine / Q000627:therapeutic use; D008875:Middle Aged; D012507:Sarcoidosis / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D012867:Skin / Q000473:pathology; D012871:Skin Diseases / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D013272:Stomach Diseases / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology
chemical_list: D000962:Antimalarials; D006886:Hydroxychloroquine