title: Synchronous squamous cell carcinoma of the stomach, the lung and the skin.
abstract: BACKGROUND
  The incidence of multiple primary cancers is reported to be 0.3-4.3%.
  
  
  METHODS
  A 70-year-old man was admitted to the hospital because of fatigue, weight loss, epigastric pain with melena. A biopsy taken from a tumoral lesion in the gastric corpus revealed squamous cell carcinoma. A nodular lesion was also detected on the nasal columella and biopsy from this lesion also showed squamous cell carcinoma. Computed tomography performed as a part of metastatic work-up revealed a lesion in the left pulmonary lower lobe. Bronchoscopic biopsy from this lesion also demonstrated squamous cell carcinoma.
  
  
  RESULTS
  We report a case with synchronous squamous cell carcinoma of the lung, skin and stomach and discuss the multiple synchronous occurrence of carcinoma with the same histopathology in different sites with a review of the literature.
authors.affiliation: Institute of Oncology, Department of Pathology, Hacettepe School of Medicine, Ankara, Turkey.
authors.forename: K
authors.initials: K
authors.lastname: Altundag
authors.forename: S
authors.initials: S
authors.lastname: Yalcin
authors.forename: O
authors.initials: O
authors.lastname: Ozkaya
authors.forename: N
authors.initials: N
authors.lastname: Guler
mesh_terms: D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis* / Q000556:secondary; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D008297:Male; D009382:Neoplasms, Unknown Primary / Q000175:diagnosis*; D012878:Skin Neoplasms / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis*