title: Metastasis of head and neck carcinoma to the site of percutaneous endoscopic gastrostomy: case report and literature review.
abstract: BACKGROUND
  Patients with head and neck cancer often need a percutaneous endoscopic gastrostomy to provide adequate nutrition because of inability to swallow after tumor radiation therapy. However, metastasis of the original tumor to the gastrostomy exit site may occur.
  
  
  METHODS
  We describe the case of a 61-year-old man with stage III (T2 N1) squamous cell carcinoma of the tongue in whom a PEG tube was placed to circumvent anticipated difficulties in swallowing after radiation therapy. We also compare this case with similar cases in the literature.
  
  
  RESULTS
  Soreness and erythema near the gastrostomy site reported by the patient were diagnosed as cellulitis, and two courses of antibiotic treatment were prescribed. However, a biopsy showed that the original squamous cell carcinoma had metastasized to the gastrostomy exit site. The "pull" method of tube placement had been used in this patient and in all 19 cases of metastasis reported in the literature.
  
  
  CONCLUSIONS
  Metastatic cancer should be considered in patients with head and neck cancer who have unexplained skin changes at the gastrostomy site. Our experience with this case and review of the literature indicate that, in patients with head and neck cancer, "pull" procedures for placement of gastrostomy tubes may induce metastasis by direct implantation of tumor cells because of contact between the gastrostomy tube and tumor cells. Methods of tube insertion that avoid such contact are preferred.
authors.affiliation: Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, Florida 32224, USA.
authors.forename: J J
authors.initials: JJ
authors.lastname: Sinclair
authors.forename: J S
authors.initials: JS
authors.lastname: Scolapio
authors.forename: M E
authors.initials: ME
authors.lastname: Stark
authors.forename: R A
authors.initials: RA
authors.lastname: Hinder
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000532:radiotherapy / Q000556:secondary* / Q000601:surgery; D005774:Gastrostomy / Q000009:adverse effects* / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D009366:Neoplasm Seeding; D013274:Stomach Neoplasms / Q000556:secondary* / Q000601:surgery; D014062:Tongue Neoplasms / Q000473:pathology* / Q000532:radiotherapy / Q000601:surgery