title: Incidence of occult papillary carcinoma of thyroid in Indian population: case series and review of literature.
abstract: OBJECTIVE
  To report the incidence of occult papillary carcinoma of thyroid in a tertiary care center in India in post-laryngectomy specimen of carcinoma of hypopharynx.
  
  
  METHODS
  Retrospective analysis.
  
  
  METHODS
  This is a retrospective analysis of incidentally detected papillary carcinoma of thyroid in 358 patients of carcinoma of hypopharynx treated with total/near total laryngectomy at our tertiary care institute from 2005 to 2011.
  
  
  METHODS
  Statistical analysis was performed using the software Statistical Package for the Social Sciences 20.0 (IBM, NY, USA). Percentages were calculated.
  
  
  RESULTS
  Thyroid cancer was seen in 7/358 patients with incidence of 2%. Five patients had tumor localized to thyroid gland only. One patient had nodal metastasis with thyroid cancer and one had only metastatic cervical node with normal thyroid gland on final histopathology. Three of these patients (3/7) had a recurrence of carcinoma of hypopharynx within 1 year duration.
  
  
  CONCLUSIONS
  The incidence of occult papillary carcinoma of thyroid varies from 0.25% to 7% in the Indian literature.
authors.forename: Poonam
authors.initials: P
authors.lastname: Joshi
authors.forename: Sudhir
authors.initials: S
authors.lastname: Nair
authors.forename: Deepa
authors.initials: D
authors.lastname: Nair
authors.affiliation: Department of Head and Neck Surgery, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, India.
authors.forename: Pankaj
authors.initials: P
authors.lastname: Chaturvedi
mesh_terms: D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000175:diagnosis / Q000453:epidemiology* / Q000473:pathology; D002291:Carcinoma, Papillary; D005260:Female; D006801:Humans; D015994:Incidence; D007194:India / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D012189:Retrospective Studies; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000175:diagnosis / Q000453:epidemiology* / Q000473:pathology