title: Oral manifestations in vitamin B12 deficiency patients with or without history of gastrectomy.
abstract: BACKGROUND
  The purpose of this study was to compare clinical features of vitamin B12 deficiency patients with a history of gastrectomy to those without a history of gastrectomy.
  
  
  METHODS
  Twenty-two patients with vitamin B12 deficiency were included. Patients' chief complaints, oral manifestations, blood examination results, and past medical histories were reviewed.
  
  
  RESULTS
  Eleven patients had a history of gastrectomy and 11 did not. The chief complaint was glossodynia in all patients. No significant differences were observed between the two groups regarding age, sex, symptom duration, or plasma vitamin B12 level. Erythema and depapillation of the tongue were the most common findings, however less common among patients without a history of gastrectomy. Two patients with a history of gastrectomy and 5 patients without a history of gastrectomy had normal oral mucosa. Patients with a history of gastrectomy were more anemic. Oral symptoms of the majority of patients responded to antifungals and vitamin B12 replacement. The suggested etiologies for vitamin B12 deficiency in the patients without a history of gastrectomy were gastritis, medications, diet, autoimmunity, and early gastric cancer.
  
  
  CONCLUSIONS
  Vitamin B12 deficiency and its associated etiological factors should be considered in patients with glossodynia, even those whose oral mucosa appears normal and who lack a history of gastrectomy.
authors.affiliation: Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, Yunkeun-Dong 28, Chongro-Ku, Seoul, 110-749, Republic of Korea.
authors.forename: Jihoon
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, Yunkeun-Dong 28, Chongro-Ku, Seoul, 110-749, Republic of Korea.
authors.forename: Moon-Jong
authors.initials: MJ
authors.lastname: Kim
authors.affiliation: Department of Oral Medicine and Oral Diagnosis, School of Dentistry and Dental Research Institute, Seoul National University, Yunkeun-Dong 28, Chongro-Ku, Seoul, 110-749, Republic of Korea. hkho@snu.ac.kr.|Institute on Aging, Seoul National University, Gwanak-Ro 1, Gwanak-Gu, Seoul, 151-742, Republic of Korea. hkho@snu.ac.kr.
authors.forename: Hong-Seop
authors.initials: HS
authors.lastname: Kho
mesh_terms: D004032:Diet; D005743:Gastrectomy; D006801:Humans; D009059:Mouth Diseases; D014805:Vitamin B 12; D014806:Vitamin B 12 Deficiency / Q000150:complications*
chemical_list: D014805:Vitamin B 12
keywords: Gastrectomy; Oral; Vitamin B12