title: Descriptive Epidemiology of Thyroid Cancers in Togo.
abstract: BACKGROUND
  The purpose of this study was to provide epidemiological and histological data of thyroid cancers in Togo.
  
  
  METHODS
  This was a retrospective cross-sectional study of cases of thyroid cancers diagnosed from 2000 to 2014 (15 years) at the pathology laboratory of the Sylvanus Olympio Teaching Hospital of Lome. All cases of review of a thyroid sample (biopsies, surgical specimens) were collected from the data records of that laboratory.
  
  
  RESULTS
  Thyroid cancers represented 1.1% (7930 cases) of all cancers registered during the study period. Mean age was 45.4±0.3 years and the proportion of females was 78.3%. We identified 92.4% carcinomas and 7.6% lymphomas. Carcinomas were well differentiated in 80 cases and were dominated by the papillary type (47 cases). Metastasis was observed in 13% of patients. The pTNM classification evaluated in 18 cases showed a predominance of grade I (13 cases). Lymphomas were dominated by lymphoma diffuse large B-cell (5 cases).
  
  
  CONCLUSIONS
  This study is the first global standard for thyroid cancer pathology in Togo. The high frequency of follicular form suggests an unrecognized iodine deficiency. The improvement of the technical platform of the LAP (immunohistochemistry) will increase the diagnosis of rare forms of thyroid cancer.
authors.affiliation: Department of Pathology, University Teaching Hospital Lome, Togo E-mail : paolodarre@yahoo.fr.
authors.forename: Tchin
authors.initials: T
authors.lastname: Darre
authors.forename: Bathokedeou
authors.initials: B
authors.lastname: Amana
authors.forename: Essobozou
authors.initials: E
authors.lastname: Pegbessou
authors.forename: Harefeteguena
authors.initials: H
authors.lastname: Bissa
authors.forename: Koffi
authors.initials: K
authors.lastname: Amegbor
authors.forename: Essohanam
authors.initials: E
authors.lastname: Boko
authors.forename: Eyawelohn
authors.initials: E
authors.lastname: Kpemessi
authors.forename: Gado
authors.initials: G
authors.lastname: Napo-Koura
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000453:epidemiology* / Q000473:pathology / Q000556:secondary; D002291:Carcinoma, Papillary; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016403:Lymphoma, Large B-Cell, Diffuse / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D060787:Neoplasm Grading; D012187:Retroperitoneal Space; D000077273:Thyroid Cancer, Papillary; D013964:Thyroid Neoplasms / Q000453:epidemiology* / Q000473:pathology*; D014037:Togo / Q000453:epidemiology; D055815:Young Adult